Update dependencies

75 files changed, 782 insertions, 2252 deletions

diff --git a/vendor/golang.org/x/crypto/acme/acme.go b/vendor/golang.org/x/crypto/acme/acme.go
index 8aafada..8619508 100644
--- a/vendor/golang.org/x/crypto/acme/acme.go
+++ b/vendor/golang.org/x/crypto/acme/acme.go
@@ -47,6 +47,10 @@ const LetsEncryptURL = "https://acme-v01.api.letsencrypt.org/directory"
 const (
 	maxChainLen = 5       // max depth and breadth of a certificate chain
 	maxCertSize = 1 << 20 // max size of a certificate, in bytes
+
+	// Max number of collected nonces kept in memory.
+	// Expect usual peak of 1 or 2.
+	maxNonces = 100
 )
 
 // CertOption is an optional argument type for Client methods which manipulate
@@ -108,6 +112,9 @@ type Client struct {
 
 	dirMu sync.Mutex // guards writes to dir
 	dir   *Directory // cached result of Client's Discover method
+
+	noncesMu sync.Mutex
+	nonces   map[string]struct{} // nonces collected from previous responses
 }
 
 // Discover performs ACME server discovery using c.DirectoryURL.
@@ -131,6 +138,7 @@ func (c *Client) Discover(ctx context.Context) (Directory, error) {
 		return Directory{}, err
 	}
 	defer res.Body.Close()
+	c.addNonce(res.Header)
 	if res.StatusCode != http.StatusOK {
 		return Directory{}, responseError(res)
 	}
@@ -192,7 +200,7 @@ func (c *Client) CreateCert(ctx context.Context, csr []byte, exp time.Duration,
 		req.NotAfter = now.Add(exp).Format(time.RFC3339)
 	}
 
-	res, err := postJWS(ctx, c.HTTPClient, c.Key, c.dir.CertURL, req)
+	res, err := c.postJWS(ctx, c.Key, c.dir.CertURL, req)
 	if err != nil {
 		return nil, "", err
 	}
@@ -267,7 +275,7 @@ func (c *Client) RevokeCert(ctx context.Context, key crypto.Signer, cert []byte,
 	if key == nil {
 		key = c.Key
 	}
-	res, err := postJWS(ctx, c.HTTPClient, key, c.dir.RevokeURL, body)
+	res, err := c.postJWS(ctx, key, c.dir.RevokeURL, body)
 	if err != nil {
 		return err
 	}
@@ -355,7 +363,7 @@ func (c *Client) Authorize(ctx context.Context, domain string) (*Authorization,
 		Resource:   "new-authz",
 		Identifier: authzID{Type: "dns", Value: domain},
 	}
-	res, err := postJWS(ctx, c.HTTPClient, c.Key, c.dir.AuthzURL, req)
+	res, err := c.postJWS(ctx, c.Key, c.dir.AuthzURL, req)
 	if err != nil {
 		return nil, err
 	}
@@ -413,7 +421,7 @@ func (c *Client) RevokeAuthorization(ctx context.Context, url string) error {
 		Status:   "deactivated",
 		Delete:   true,
 	}
-	res, err := postJWS(ctx, c.HTTPClient, c.Key, url, req)
+	res, err := c.postJWS(ctx, c.Key, url, req)
 	if err != nil {
 		return err
 	}
@@ -519,7 +527,7 @@ func (c *Client) Accept(ctx context.Context, chal *Challenge) (*Challenge, error
 		Type:     chal.Type,
 		Auth:     auth,
 	}
-	res, err := postJWS(ctx, c.HTTPClient, c.Key, chal.URI, req)
+	res, err := c.postJWS(ctx, c.Key, chal.URI, req)
 	if err != nil {
 		return nil, err
 	}
@@ -652,7 +660,7 @@ func (c *Client) doReg(ctx context.Context, url string, typ string, acct *Accoun
 		req.Contact = acct.Contact
 		req.Agreement = acct.AgreedTerms
 	}
-	res, err := postJWS(ctx, c.HTTPClient, c.Key, url, req)
+	res, err := c.postJWS(ctx, c.Key, url, req)
 	if err != nil {
 		return nil, err
 	}
@@ -689,6 +697,78 @@ func (c *Client) doReg(ctx context.Context, url string, typ string, acct *Accoun
 	}, nil
 }
 
+// postJWS signs the body with the given key and POSTs it to the provided url.
+// The body argument must be JSON-serializable.
+func (c *Client) postJWS(ctx context.Context, key crypto.Signer, url string, body interface{}) (*http.Response, error) {
+	nonce, err := c.popNonce(ctx, url)
+	if err != nil {
+		return nil, err
+	}
+	b, err := jwsEncodeJSON(body, key, nonce)
+	if err != nil {
+		return nil, err
+	}
+	res, err := ctxhttp.Post(ctx, c.HTTPClient, url, "application/jose+json", bytes.NewReader(b))
+	if err != nil {
+		return nil, err
+	}
+	c.addNonce(res.Header)
+	return res, nil
+}
+
+// popNonce returns a nonce value previously stored with c.addNonce
+// or fetches a fresh one from the given URL.
+func (c *Client) popNonce(ctx context.Context, url string) (string, error) {
+	c.noncesMu.Lock()
+	defer c.noncesMu.Unlock()
+	if len(c.nonces) == 0 {
+		return fetchNonce(ctx, c.HTTPClient, url)
+	}
+	var nonce string
+	for nonce = range c.nonces {
+		delete(c.nonces, nonce)
+		break
+	}
+	return nonce, nil
+}
+
+// addNonce stores a nonce value found in h (if any) for future use.
+func (c *Client) addNonce(h http.Header) {
+	v := nonceFromHeader(h)
+	if v == "" {
+		return
+	}
+	c.noncesMu.Lock()
+	defer c.noncesMu.Unlock()
+	if len(c.nonces) >= maxNonces {
+		return
+	}
+	if c.nonces == nil {
+		c.nonces = make(map[string]struct{})
+	}
+	c.nonces[v] = struct{}{}
+}
+
+func fetchNonce(ctx context.Context, client *http.Client, url string) (string, error) {
+	resp, err := ctxhttp.Head(ctx, client, url)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+	nonce := nonceFromHeader(resp.Header)
+	if nonce == "" {
+		if resp.StatusCode > 299 {
+			return "", responseError(resp)
+		}
+		return "", errors.New("acme: nonce not found")
+	}
+	return nonce, nil
+}
+
+func nonceFromHeader(h http.Header) string {
+	return h.Get("Replay-Nonce")
+}
+
 func responseCert(ctx context.Context, client *http.Client, res *http.Response, bundle bool) ([][]byte, error) {
 	b, err := ioutil.ReadAll(io.LimitReader(res.Body, maxCertSize+1))
 	if err != nil {
@@ -793,33 +873,6 @@ func chainCert(ctx context.Context, client *http.Client, url string, depth int)
 	return chain, nil
 }
 
-// postJWS signs the body with the given key and POSTs it to the provided url.
-// The body argument must be JSON-serializable.
-func postJWS(ctx context.Context, client *http.Client, key crypto.Signer, url string, body interface{}) (*http.Response, error) {
-	nonce, err := fetchNonce(ctx, client, url)
-	if err != nil {
-		return nil, err
-	}
-	b, err := jwsEncodeJSON(body, key, nonce)
-	if err != nil {
-		return nil, err
-	}
-	return ctxhttp.Post(ctx, client, url, "application/jose+json", bytes.NewReader(b))
-}
-
-func fetchNonce(ctx context.Context, client *http.Client, url string) (string, error) {
-	resp, err := ctxhttp.Head(ctx, client, url)
-	if err != nil {
-		return "", nil
-	}
-	defer resp.Body.Close()
-	enc := resp.Header.Get("replay-nonce")
-	if enc == "" {
-		return "", errors.New("acme: nonce not found")
-	}
-	return enc, nil
-}
-
 // linkHeader returns URI-Reference values of all Link headers
 // with relation-type rel.
 // See https://tools.ietf.org/html/rfc5988#section-5 for details.
diff --git a/vendor/golang.org/x/crypto/acme/autocert/cache.go b/vendor/golang.org/x/crypto/acme/autocert/cache.go
index 1c67f6c..9b184aa 100644
--- a/vendor/golang.org/x/crypto/acme/autocert/cache.go
+++ b/vendor/golang.org/x/crypto/acme/autocert/cache.go
@@ -27,7 +27,7 @@ type Cache interface {
 	Get(ctx context.Context, key string) ([]byte, error)
 
 	// Put stores the data in the cache under the specified key.
-	// Inderlying implementations may use any data storage format,
+	// Underlying implementations may use any data storage format,
 	// as long as the reverse operation, Get, results in the original data.
 	Put(ctx context.Context, key string, data []byte) error
 
diff --git a/vendor/golang.org/x/crypto/curve25519/const_amd64.h b/vendor/golang.org/x/crypto/curve25519/const_amd64.h
new file mode 100644
index 0000000..80ad222
--- /dev/null
+++ b/vendor/golang.org/x/crypto/curve25519/const_amd64.h
@@ -0,0 +1,8 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: http://bench.cr.yp.to/supercop.html
+
+#define REDMASK51     0x0007FFFFFFFFFFFF
diff --git a/vendor/golang.org/x/crypto/curve25519/const_amd64.s b/vendor/golang.org/x/crypto/curve25519/const_amd64.s
index 797f9b0..0ad5398 100644
--- a/vendor/golang.org/x/crypto/curve25519/const_amd64.s
+++ b/vendor/golang.org/x/crypto/curve25519/const_amd64.s
@@ -7,8 +7,8 @@
 
 // +build amd64,!gccgo,!appengine
 
-DATA ·REDMASK51(SB)/8, $0x0007FFFFFFFFFFFF
-GLOBL ·REDMASK51(SB), 8, $8
+// These constants cannot be encoded in non-MOVQ immediates.
+// We access them directly from memory instead.
 
 DATA ·_121666_213(SB)/8, $996687872
 GLOBL ·_121666_213(SB), 8, $8
diff --git a/vendor/golang.org/x/crypto/curve25519/curve25519.go b/vendor/golang.org/x/crypto/curve25519/curve25519.go
deleted file mode 100644
index 6918c47..0000000
--- a/vendor/golang.org/x/crypto/curve25519/curve25519.go
+++ /dev/null
@@ -1,841 +0,0 @@
-// Copyright 2013 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// We have a implementation in amd64 assembly so this code is only run on
-// non-amd64 platforms. The amd64 assembly does not support gccgo.
-// +build !amd64 gccgo appengine
-
-package curve25519
-
-// This code is a port of the public domain, "ref10" implementation of
-// curve25519 from SUPERCOP 20130419 by D. J. Bernstein.
-
-// fieldElement represents an element of the field GF(2^255 - 19). An element
-// t, entries t[0]...t[9], represents the integer t[0]+2^26 t[1]+2^51 t[2]+2^77
-// t[3]+2^102 t[4]+...+2^230 t[9]. Bounds on each t[i] vary depending on
-// context.
-type fieldElement [10]int32
-
-func feZero(fe *fieldElement) {
-	for i := range fe {
-		fe[i] = 0
-	}
-}
-
-func feOne(fe *fieldElement) {
-	feZero(fe)
-	fe[0] = 1
-}
-
-func feAdd(dst, a, b *fieldElement) {
-	for i := range dst {
-		dst[i] = a[i] + b[i]
-	}
-}
-
-func feSub(dst, a, b *fieldElement) {
-	for i := range dst {
-		dst[i] = a[i] - b[i]
-	}
-}
-
-func feCopy(dst, src *fieldElement) {
-	for i := range dst {
-		dst[i] = src[i]
-	}
-}
-
-// feCSwap replaces (f,g) with (g,f) if b == 1; replaces (f,g) with (f,g) if b == 0.
-//
-// Preconditions: b in {0,1}.
-func feCSwap(f, g *fieldElement, b int32) {
-	var x fieldElement
-	b = -b
-	for i := range x {
-		x[i] = b & (f[i] ^ g[i])
-	}
-
-	for i := range f {
-		f[i] ^= x[i]
-	}
-	for i := range g {
-		g[i] ^= x[i]
-	}
-}
-
-// load3 reads a 24-bit, little-endian value from in.
-func load3(in []byte) int64 {
-	var r int64
-	r = int64(in[0])
-	r |= int64(in[1]) << 8
-	r |= int64(in[2]) << 16
-	return r
-}
-
-// load4 reads a 32-bit, little-endian value from in.
-func load4(in []byte) int64 {
-	var r int64
-	r = int64(in[0])
-	r |= int64(in[1]) << 8
-	r |= int64(in[2]) << 16
-	r |= int64(in[3]) << 24
-	return r
-}
-
-func feFromBytes(dst *fieldElement, src *[32]byte) {
-	h0 := load4(src[:])
-	h1 := load3(src[4:]) << 6
-	h2 := load3(src[7:]) << 5
-	h3 := load3(src[10:]) << 3
-	h4 := load3(src[13:]) << 2
-	h5 := load4(src[16:])
-	h6 := load3(src[20:]) << 7
-	h7 := load3(src[23:]) << 5
-	h8 := load3(src[26:]) << 4
-	h9 := load3(src[29:]) << 2
-
-	var carry [10]int64
-	carry[9] = (h9 + 1<<24) >> 25
-	h0 += carry[9] * 19
-	h9 -= carry[9] << 25
-	carry[1] = (h1 + 1<<24) >> 25
-	h2 += carry[1]
-	h1 -= carry[1] << 25
-	carry[3] = (h3 + 1<<24) >> 25
-	h4 += carry[3]
-	h3 -= carry[3] << 25
-	carry[5] = (h5 + 1<<24) >> 25
-	h6 += carry[5]
-	h5 -= carry[5] << 25
-	carry[7] = (h7 + 1<<24) >> 25
-	h8 += carry[7]
-	h7 -= carry[7] << 25
-
-	carry[0] = (h0 + 1<<25) >> 26
-	h1 += carry[0]
-	h0 -= carry[0] << 26
-	carry[2] = (h2 + 1<<25) >> 26
-	h3 += carry[2]
-	h2 -= carry[2] << 26
-	carry[4] = (h4 + 1<<25) >> 26
-	h5 += carry[4]
-	h4 -= carry[4] << 26
-	carry[6] = (h6 + 1<<25) >> 26
-	h7 += carry[6]
-	h6 -= carry[6] << 26
-	carry[8] = (h8 + 1<<25) >> 26
-	h9 += carry[8]
-	h8 -= carry[8] << 26
-
-	dst[0] = int32(h0)
-	dst[1] = int32(h1)
-	dst[2] = int32(h2)
-	dst[3] = int32(h3)
-	dst[4] = int32(h4)
-	dst[5] = int32(h5)
-	dst[6] = int32(h6)
-	dst[7] = int32(h7)
-	dst[8] = int32(h8)
-	dst[9] = int32(h9)
-}
-
-// feToBytes marshals h to s.
-// Preconditions:
-//   |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-//
-// Write p=2^255-19; q=floor(h/p).
-// Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))).
-//
-// Proof:
-//   Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4.
-//   Also have |h-2^230 h9|<2^230 so |19 2^(-255)(h-2^230 h9)|<1/4.
-//
-//   Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9).
-//   Then 0<y<1.
-//
-//   Write r=h-pq.
-//   Have 0<=r<=p-1=2^255-20.
-//   Thus 0<=r+19(2^-255)r<r+19(2^-255)2^255<=2^255-1.
-//
-//   Write x=r+19(2^-255)r+y.
-//   Then 0<x<2^255 so floor(2^(-255)x) = 0 so floor(q+2^(-255)x) = q.
-//
-//   Have q+2^(-255)x = 2^(-255)(h + 19 2^(-25) h9 + 2^(-1))
-//   so floor(2^(-255)(h + 19 2^(-25) h9 + 2^(-1))) = q.
-func feToBytes(s *[32]byte, h *fieldElement) {
-	var carry [10]int32
-
-	q := (19*h[9] + (1 << 24)) >> 25
-	q = (h[0] + q) >> 26
-	q = (h[1] + q) >> 25
-	q = (h[2] + q) >> 26
-	q = (h[3] + q) >> 25
-	q = (h[4] + q) >> 26
-	q = (h[5] + q) >> 25
-	q = (h[6] + q) >> 26
-	q = (h[7] + q) >> 25
-	q = (h[8] + q) >> 26
-	q = (h[9] + q) >> 25
-
-	// Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20.
-	h[0] += 19 * q
-	// Goal: Output h-2^255 q, which is between 0 and 2^255-20.
-
-	carry[0] = h[0] >> 26
-	h[1] += carry[0]
-	h[0] -= carry[0] << 26
-	carry[1] = h[1] >> 25
-	h[2] += carry[1]
-	h[1] -= carry[1] << 25
-	carry[2] = h[2] >> 26
-	h[3] += carry[2]
-	h[2] -= carry[2] << 26
-	carry[3] = h[3] >> 25
-	h[4] += carry[3]
-	h[3] -= carry[3] << 25
-	carry[4] = h[4] >> 26
-	h[5] += carry[4]
-	h[4] -= carry[4] << 26
-	carry[5] = h[5] >> 25
-	h[6] += carry[5]
-	h[5] -= carry[5] << 25
-	carry[6] = h[6] >> 26
-	h[7] += carry[6]
-	h[6] -= carry[6] << 26
-	carry[7] = h[7] >> 25
-	h[8] += carry[7]
-	h[7] -= carry[7] << 25
-	carry[8] = h[8] >> 26
-	h[9] += carry[8]
-	h[8] -= carry[8] << 26
-	carry[9] = h[9] >> 25
-	h[9] -= carry[9] << 25
-	// h10 = carry9
-
-	// Goal: Output h[0]+...+2^255 h10-2^255 q, which is between 0 and 2^255-20.
-	// Have h[0]+...+2^230 h[9] between 0 and 2^255-1;
-	// evidently 2^255 h10-2^255 q = 0.
-	// Goal: Output h[0]+...+2^230 h[9].
-
-	s[0] = byte(h[0] >> 0)
-	s[1] = byte(h[0] >> 8)
-	s[2] = byte(h[0] >> 16)
-	s[3] = byte((h[0] >> 24) | (h[1] << 2))
-	s[4] = byte(h[1] >> 6)
-	s[5] = byte(h[1] >> 14)
-	s[6] = byte((h[1] >> 22) | (h[2] << 3))
-	s[7] = byte(h[2] >> 5)
-	s[8] = byte(h[2] >> 13)
-	s[9] = byte((h[2] >> 21) | (h[3] << 5))
-	s[10] = byte(h[3] >> 3)
-	s[11] = byte(h[3] >> 11)
-	s[12] = byte((h[3] >> 19) | (h[4] << 6))
-	s[13] = byte(h[4] >> 2)
-	s[14] = byte(h[4] >> 10)
-	s[15] = byte(h[4] >> 18)
-	s[16] = byte(h[5] >> 0)
-	s[17] = byte(h[5] >> 8)
-	s[18] = byte(h[5] >> 16)
-	s[19] = byte((h[5] >> 24) | (h[6] << 1))
-	s[20] = byte(h[6] >> 7)
-	s[21] = byte(h[6] >> 15)
-	s[22] = byte((h[6] >> 23) | (h[7] << 3))
-	s[23] = byte(h[7] >> 5)
-	s[24] = byte(h[7] >> 13)
-	s[25] = byte((h[7] >> 21) | (h[8] << 4))
-	s[26] = byte(h[8] >> 4)
-	s[27] = byte(h[8] >> 12)
-	s[28] = byte((h[8] >> 20) | (h[9] << 6))
-	s[29] = byte(h[9] >> 2)
-	s[30] = byte(h[9] >> 10)
-	s[31] = byte(h[9] >> 18)
-}
-
-// feMul calculates h = f * g
-// Can overlap h with f or g.
-//
-// Preconditions:
-//    |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-//    |g| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-//
-// Postconditions:
-//    |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-//
-// Notes on implementation strategy:
-//
-// Using schoolbook multiplication.
-// Karatsuba would save a little in some cost models.
-//
-// Most multiplications by 2 and 19 are 32-bit precomputations;
-// cheaper than 64-bit postcomputations.
-//
-// There is one remaining multiplication by 19 in the carry chain;
-// one *19 precomputation can be merged into this,
-// but the resulting data flow is considerably less clean.
-//
-// There are 12 carries below.
-// 10 of them are 2-way parallelizable and vectorizable.
-// Can get away with 11 carries, but then data flow is much deeper.
-//
-// With tighter constraints on inputs can squeeze carries into int32.
-func feMul(h, f, g *fieldElement) {
-	f0 := f[0]
-	f1 := f[1]
-	f2 := f[2]
-	f3 := f[3]
-	f4 := f[4]
-	f5 := f[5]
-	f6 := f[6]
-	f7 := f[7]
-	f8 := f[8]
-	f9 := f[9]
-	g0 := g[0]
-	g1 := g[1]
-	g2 := g[2]
-	g3 := g[3]
-	g4 := g[4]
-	g5 := g[5]
-	g6 := g[6]
-	g7 := g[7]
-	g8 := g[8]
-	g9 := g[9]
-	g1_19 := 19 * g1 // 1.4*2^29
-	g2_19 := 19 * g2 // 1.4*2^30; still ok
-	g3_19 := 19 * g3
-	g4_19 := 19 * g4
-	g5_19 := 19 * g5
-	g6_19 := 19 * g6
-	g7_19 := 19 * g7
-	g8_19 := 19 * g8
-	g9_19 := 19 * g9
-	f1_2 := 2 * f1
-	f3_2 := 2 * f3
-	f5_2 := 2 * f5
-	f7_2 := 2 * f7
-	f9_2 := 2 * f9
-	f0g0 := int64(f0) * int64(g0)
-	f0g1 := int64(f0) * int64(g1)
-	f0g2 := int64(f0) * int64(g2)
-	f0g3 := int64(f0) * int64(g3)
-	f0g4 := int64(f0) * int64(g4)
-	f0g5 := int64(f0) * int64(g5)
-	f0g6 := int64(f0) * int64(g6)
-	f0g7 := int64(f0) * int64(g7)
-	f0g8 := int64(f0) * int64(g8)
-	f0g9 := int64(f0) * int64(g9)
-	f1g0 := int64(f1) * int64(g0)
-	f1g1_2 := int64(f1_2) * int64(g1)
-	f1g2 := int64(f1) * int64(g2)
-	f1g3_2 := int64(f1_2) * int64(g3)
-	f1g4 := int64(f1) * int64(g4)
-	f1g5_2 := int64(f1_2) * int64(g5)
-	f1g6 := int64(f1) * int64(g6)
-	f1g7_2 := int64(f1_2) * int64(g7)
-	f1g8 := int64(f1) * int64(g8)
-	f1g9_38 := int64(f1_2) * int64(g9_19)
-	f2g0 := int64(f2) * int64(g0)
-	f2g1 := int64(f2) * int64(g1)
-	f2g2 := int64(f2) * int64(g2)
-	f2g3 := int64(f2) * int64(g3)
-	f2g4 := int64(f2) * int64(g4)
-	f2g5 := int64(f2) * int64(g5)
-	f2g6 := int64(f2) * int64(g6)
-	f2g7 := int64(f2) * int64(g7)
-	f2g8_19 := int64(f2) * int64(g8_19)
-	f2g9_19 := int64(f2) * int64(g9_19)
-	f3g0 := int64(f3) * int64(g0)
-	f3g1_2 := int64(f3_2) * int64(g1)
-	f3g2 := int64(f3) * int64(g2)
-	f3g3_2 := int64(f3_2) * int64(g3)
-	f3g4 := int64(f3) * int64(g4)
-	f3g5_2 := int64(f3_2) * int64(g5)
-	f3g6 := int64(f3) * int64(g6)
-	f3g7_38 := int64(f3_2) * int64(g7_19)
-	f3g8_19 := int64(f3) * int64(g8_19)
-	f3g9_38 := int64(f3_2) * int64(g9_19)
-	f4g0 := int64(f4) * int64(g0)
-	f4g1 := int64(f4) * int64(g1)
-	f4g2 := int64(f4) * int64(g2)
-	f4g3 := int64(f4) * int64(g3)
-	f4g4 := int64(f4) * int64(g4)
-	f4g5 := int64(f4) * int64(g5)
-	f4g6_19 := int64(f4) * int64(g6_19)
-	f4g7_19 := int64(f4) * int64(g7_19)
-	f4g8_19 := int64(f4) * int64(g8_19)
-	f4g9_19 := int64(f4) * int64(g9_19)
-	f5g0 := int64(f5) * int64(g0)
-	f5g1_2 := int64(f5_2) * int64(g1)
-	f5g2 := int64(f5) * int64(g2)
-	f5g3_2 := int64(f5_2) * int64(g3)
-	f5g4 := int64(f5) * int64(g4)
-	f5g5_38 := int64(f5_2) * int64(g5_19)
-	f5g6_19 := int64(f5) * int64(g6_19)
-	f5g7_38 := int64(f5_2) * int64(g7_19)
-	f5g8_19 := int64(f5) * int64(g8_19)
-	f5g9_38 := int64(f5_2) * int64(g9_19)
-	f6g0 := int64(f6) * int64(g0)
-	f6g1 := int64(f6) * int64(g1)
-	f6g2 := int64(f6) * int64(g2)
-	f6g3 := int64(f6) * int64(g3)
-	f6g4_19 := int64(f6) * int64(g4_19)
-	f6g5_19 := int64(f6) * int64(g5_19)
-	f6g6_19 := int64(f6) * int64(g6_19)
-	f6g7_19 := int64(f6) * int64(g7_19)
-	f6g8_19 := int64(f6) * int64(g8_19)
-	f6g9_19 := int64(f6) * int64(g9_19)
-	f7g0 := int64(f7) * int64(g0)
-	f7g1_2 := int64(f7_2) * int64(g1)
-	f7g2 := int64(f7) * int64(g2)
-	f7g3_38 := int64(f7_2) * int64(g3_19)
-	f7g4_19 := int64(f7) * int64(g4_19)
-	f7g5_38 := int64(f7_2) * int64(g5_19)
-	f7g6_19 := int64(f7) * int64(g6_19)
-	f7g7_38 := int64(f7_2) * int64(g7_19)
-	f7g8_19 := int64(f7) * int64(g8_19)
-	f7g9_38 := int64(f7_2) * int64(g9_19)
-	f8g0 := int64(f8) * int64(g0)
-	f8g1 := int64(f8) * int64(g1)
-	f8g2_19 := int64(f8) * int64(g2_19)
-	f8g3_19 := int64(f8) * int64(g3_19)
-	f8g4_19 := int64(f8) * int64(g4_19)
-	f8g5_19 := int64(f8) * int64(g5_19)
-	f8g6_19 := int64(f8) * int64(g6_19)
-	f8g7_19 := int64(f8) * int64(g7_19)
-	f8g8_19 := int64(f8) * int64(g8_19)
-	f8g9_19 := int64(f8) * int64(g9_19)
-	f9g0 := int64(f9) * int64(g0)
-	f9g1_38 := int64(f9_2) * int64(g1_19)
-	f9g2_19 := int64(f9) * int64(g2_19)
-	f9g3_38 := int64(f9_2) * int64(g3_19)
-	f9g4_19 := int64(f9) * int64(g4_19)
-	f9g5_38 := int64(f9_2) * int64(g5_19)
-	f9g6_19 := int64(f9) * int64(g6_19)
-	f9g7_38 := int64(f9_2) * int64(g7_19)
-	f9g8_19 := int64(f9) * int64(g8_19)
-	f9g9_38 := int64(f9_2) * int64(g9_19)
-	h0 := f0g0 + f1g9_38 + f2g8_19 + f3g7_38 + f4g6_19 + f5g5_38 + f6g4_19 + f7g3_38 + f8g2_19 + f9g1_38
-	h1 := f0g1 + f1g0 + f2g9_19 + f3g8_19 + f4g7_19 + f5g6_19 + f6g5_19 + f7g4_19 + f8g3_19 + f9g2_19
-	h2 := f0g2 + f1g1_2 + f2g0 + f3g9_38 + f4g8_19 + f5g7_38 + f6g6_19 + f7g5_38 + f8g4_19 + f9g3_38
-	h3 := f0g3 + f1g2 + f2g1 + f3g0 + f4g9_19 + f5g8_19 + f6g7_19 + f7g6_19 + f8g5_19 + f9g4_19
-	h4 := f0g4 + f1g3_2 + f2g2 + f3g1_2 + f4g0 + f5g9_38 + f6g8_19 + f7g7_38 + f8g6_19 + f9g5_38
-	h5 := f0g5 + f1g4 + f2g3 + f3g2 + f4g1 + f5g0 + f6g9_19 + f7g8_19 + f8g7_19 + f9g6_19
-	h6 := f0g6 + f1g5_2 + f2g4 + f3g3_2 + f4g2 + f5g1_2 + f6g0 + f7g9_38 + f8g8_19 + f9g7_38
-	h7 := f0g7 + f1g6 + f2g5 + f3g4 + f4g3 + f5g2 + f6g1 + f7g0 + f8g9_19 + f9g8_19
-	h8 := f0g8 + f1g7_2 + f2g6 + f3g5_2 + f4g4 + f5g3_2 + f6g2 + f7g1_2 + f8g0 + f9g9_38
-	h9 := f0g9 + f1g8 + f2g7 + f3g6 + f4g5 + f5g4 + f6g3 + f7g2 + f8g1 + f9g0
-	var carry [10]int64
-
-	// |h0| <= (1.1*1.1*2^52*(1+19+19+19+19)+1.1*1.1*2^50*(38+38+38+38+38))
-	//   i.e. |h0| <= 1.2*2^59; narrower ranges for h2, h4, h6, h8
-	// |h1| <= (1.1*1.1*2^51*(1+1+19+19+19+19+19+19+19+19))
-	//   i.e. |h1| <= 1.5*2^58; narrower ranges for h3, h5, h7, h9
-
-	carry[0] = (h0 + (1 << 25)) >> 26
-	h1 += carry[0]
-	h0 -= carry[0] << 26
-	carry[4] = (h4 + (1 << 25)) >> 26
-	h5 += carry[4]
-	h4 -= carry[4] << 26
-	// |h0| <= 2^25
-	// |h4| <= 2^25
-	// |h1| <= 1.51*2^58
-	// |h5| <= 1.51*2^58
-
-	carry[1] = (h1 + (1 << 24)) >> 25
-	h2 += carry[1]
-	h1 -= carry[1] << 25
-	carry[5] = (h5 + (1 << 24)) >> 25
-	h6 += carry[5]
-	h5 -= carry[5] << 25
-	// |h1| <= 2^24; from now on fits into int32
-	// |h5| <= 2^24; from now on fits into int32
-	// |h2| <= 1.21*2^59
-	// |h6| <= 1.21*2^59
-
-	carry[2] = (h2 + (1 << 25)) >> 26
-	h3 += carry[2]
-	h2 -= carry[2] << 26
-	carry[6] = (h6 + (1 << 25)) >> 26
-	h7 += carry[6]
-	h6 -= carry[6] << 26
-	// |h2| <= 2^25; from now on fits into int32 unchanged
-	// |h6| <= 2^25; from now on fits into int32 unchanged
-	// |h3| <= 1.51*2^58
-	// |h7| <= 1.51*2^58
-
-	carry[3] = (h3 + (1 << 24)) >> 25
-	h4 += carry[3]
-	h3 -= carry[3] << 25
-	carry[7] = (h7 + (1 << 24)) >> 25
-	h8 += carry[7]
-	h7 -= carry[7] << 25
-	// |h3| <= 2^24; from now on fits into int32 unchanged
-	// |h7| <= 2^24; from now on fits into int32 unchanged
-	// |h4| <= 1.52*2^33
-	// |h8| <= 1.52*2^33
-
-	carry[4] = (h4 + (1 << 25)) >> 26
-	h5 += carry[4]
-	h4 -= carry[4] << 26
-	carry[8] = (h8 + (1 << 25)) >> 26
-	h9 += carry[8]
-	h8 -= carry[8] << 26
-	// |h4| <= 2^25; from now on fits into int32 unchanged
-	// |h8| <= 2^25; from now on fits into int32 unchanged
-	// |h5| <= 1.01*2^24
-	// |h9| <= 1.51*2^58
-
-	carry[9] = (h9 + (1 << 24)) >> 25
-	h0 += carry[9] * 19
-	h9 -= carry[9] << 25
-	// |h9| <= 2^24; from now on fits into int32 unchanged
-	// |h0| <= 1.8*2^37
-
-	carry[0] = (h0 + (1 << 25)) >> 26
-	h1 += carry[0]
-	h0 -= carry[0] << 26
-	// |h0| <= 2^25; from now on fits into int32 unchanged
-	// |h1| <= 1.01*2^24
-
-	h[0] = int32(h0)
-	h[1] = int32(h1)
-	h[2] = int32(h2)
-	h[3] = int32(h3)
-	h[4] = int32(h4)
-	h[5] = int32(h5)
-	h[6] = int32(h6)
-	h[7] = int32(h7)
-	h[8] = int32(h8)
-	h[9] = int32(h9)
-}
-
-// feSquare calculates h = f*f. Can overlap h with f.
-//
-// Preconditions:
-//    |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-//
-// Postconditions:
-//    |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-func feSquare(h, f *fieldElement) {
-	f0 := f[0]
-	f1 := f[1]
-	f2 := f[2]
-	f3 := f[3]
-	f4 := f[4]
-	f5 := f[5]
-	f6 := f[6]
-	f7 := f[7]
-	f8 := f[8]
-	f9 := f[9]
-	f0_2 := 2 * f0
-	f1_2 := 2 * f1
-	f2_2 := 2 * f2
-	f3_2 := 2 * f3
-	f4_2 := 2 * f4
-	f5_2 := 2 * f5
-	f6_2 := 2 * f6
-	f7_2 := 2 * f7
-	f5_38 := 38 * f5 // 1.31*2^30
-	f6_19 := 19 * f6 // 1.31*2^30
-	f7_38 := 38 * f7 // 1.31*2^30
-	f8_19 := 19 * f8 // 1.31*2^30
-	f9_38 := 38 * f9 // 1.31*2^30
-	f0f0 := int64(f0) * int64(f0)
-	f0f1_2 := int64(f0_2) * int64(f1)
-	f0f2_2 := int64(f0_2) * int64(f2)
-	f0f3_2 := int64(f0_2) * int64(f3)
-	f0f4_2 := int64(f0_2) * int64(f4)
-	f0f5_2 := int64(f0_2) * int64(f5)
-	f0f6_2 := int64(f0_2) * int64(f6)
-	f0f7_2 := int64(f0_2) * int64(f7)
-	f0f8_2 := int64(f0_2) * int64(f8)
-	f0f9_2 := int64(f0_2) * int64(f9)
-	f1f1_2 := int64(f1_2) * int64(f1)
-	f1f2_2 := int64(f1_2) * int64(f2)
-	f1f3_4 := int64(f1_2) * int64(f3_2)
-	f1f4_2 := int64(f1_2) * int64(f4)
-	f1f5_4 := int64(f1_2) * int64(f5_2)
-	f1f6_2 := int64(f1_2) * int64(f6)
-	f1f7_4 := int64(f1_2) * int64(f7_2)
-	f1f8_2 := int64(f1_2) * int64(f8)
-	f1f9_76 := int64(f1_2) * int64(f9_38)
-	f2f2 := int64(f2) * int64(f2)
-	f2f3_2 := int64(f2_2) * int64(f3)
-	f2f4_2 := int64(f2_2) * int64(f4)
-	f2f5_2 := int64(f2_2) * int64(f5)
-	f2f6_2 := int64(f2_2) * int64(f6)
-	f2f7_2 := int64(f2_2) * int64(f7)
-	f2f8_38 := int64(f2_2) * int64(f8_19)
-	f2f9_38 := int64(f2) * int64(f9_38)
-	f3f3_2 := int64(f3_2) * int64(f3)
-	f3f4_2 := int64(f3_2) * int64(f4)
-	f3f5_4 := int64(f3_2) * int64(f5_2)
-	f3f6_2 := int64(f3_2) * int64(f6)
-	f3f7_76 := int64(f3_2) * int64(f7_38)
-	f3f8_38 := int64(f3_2) * int64(f8_19)
-	f3f9_76 := int64(f3_2) * int64(f9_38)
-	f4f4 := int64(f4) * int64(f4)
-	f4f5_2 := int64(f4_2) * int64(f5)
-	f4f6_38 := int64(f4_2) * int64(f6_19)
-	f4f7_38 := int64(f4) * int64(f7_38)
-	f4f8_38 := int64(f4_2) * int64(f8_19)
-	f4f9_38 := int64(f4) * int64(f9_38)
-	f5f5_38 := int64(f5) * int64(f5_38)
-	f5f6_38 := int64(f5_2) * int64(f6_19)
-	f5f7_76 := int64(f5_2) * int64(f7_38)
-	f5f8_38 := int64(f5_2) * int64(f8_19)
-	f5f9_76 := int64(f5_2) * int64(f9_38)
-	f6f6_19 := int64(f6) * int64(f6_19)
-	f6f7_38 := int64(f6) * int64(f7_38)
-	f6f8_38 := int64(f6_2) * int64(f8_19)
-	f6f9_38 := int64(f6) * int64(f9_38)
-	f7f7_38 := int64(f7) * int64(f7_38)
-	f7f8_38 := int64(f7_2) * int64(f8_19)
-	f7f9_76 := int64(f7_2) * int64(f9_38)
-	f8f8_19 := int64(f8) * int64(f8_19)
-	f8f9_38 := int64(f8) * int64(f9_38)
-	f9f9_38 := int64(f9) * int64(f9_38)
-	h0 := f0f0 + f1f9_76 + f2f8_38 + f3f7_76 + f4f6_38 + f5f5_38
-	h1 := f0f1_2 + f2f9_38 + f3f8_38 + f4f7_38 + f5f6_38
-	h2 := f0f2_2 + f1f1_2 + f3f9_76 + f4f8_38 + f5f7_76 + f6f6_19
-	h3 := f0f3_2 + f1f2_2 + f4f9_38 + f5f8_38 + f6f7_38
-	h4 := f0f4_2 + f1f3_4 + f2f2 + f5f9_76 + f6f8_38 + f7f7_38
-	h5 := f0f5_2 + f1f4_2 + f2f3_2 + f6f9_38 + f7f8_38
-	h6 := f0f6_2 + f1f5_4 + f2f4_2 + f3f3_2 + f7f9_76 + f8f8_19
-	h7 := f0f7_2 + f1f6_2 + f2f5_2 + f3f4_2 + f8f9_38
-	h8 := f0f8_2 + f1f7_4 + f2f6_2 + f3f5_4 + f4f4 + f9f9_38
-	h9 := f0f9_2 + f1f8_2 + f2f7_2 + f3f6_2 + f4f5_2
-	var carry [10]int64
-
-	carry[0] = (h0 + (1 << 25)) >> 26
-	h1 += carry[0]
-	h0 -= carry[0] << 26
-	carry[4] = (h4 + (1 << 25)) >> 26
-	h5 += carry[4]
-	h4 -= carry[4] << 26
-
-	carry[1] = (h1 + (1 << 24)) >> 25
-	h2 += carry[1]
-	h1 -= carry[1] << 25
-	carry[5] = (h5 + (1 << 24)) >> 25
-	h6 += carry[5]
-	h5 -= carry[5] << 25
-
-	carry[2] = (h2 + (1 << 25)) >> 26
-	h3 += carry[2]
-	h2 -= carry[2] << 26
-	carry[6] = (h6 + (1 << 25)) >> 26
-	h7 += carry[6]
-	h6 -= carry[6] << 26
-
-	carry[3] = (h3 + (1 << 24)) >> 25
-	h4 += carry[3]
-	h3 -= carry[3] << 25
-	carry[7] = (h7 + (1 << 24)) >> 25
-	h8 += carry[7]
-	h7 -= carry[7] << 25
-
-	carry[4] = (h4 + (1 << 25)) >> 26
-	h5 += carry[4]
-	h4 -= carry[4] << 26
-	carry[8] = (h8 + (1 << 25)) >> 26
-	h9 += carry[8]
-	h8 -= carry[8] << 26
-
-	carry[9] = (h9 + (1 << 24)) >> 25
-	h0 += carry[9] * 19
-	h9 -= carry[9] << 25
-
-	carry[0] = (h0 + (1 << 25)) >> 26
-	h1 += carry[0]
-	h0 -= carry[0] << 26
-
-	h[0] = int32(h0)
-	h[1] = int32(h1)
-	h[2] = int32(h2)
-	h[3] = int32(h3)
-	h[4] = int32(h4)
-	h[5] = int32(h5)
-	h[6] = int32(h6)
-	h[7] = int32(h7)
-	h[8] = int32(h8)
-	h[9] = int32(h9)
-}
-
-// feMul121666 calculates h = f * 121666. Can overlap h with f.
-//
-// Preconditions:
-//    |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-//
-// Postconditions:
-//    |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-func feMul121666(h, f *fieldElement) {
-	h0 := int64(f[0]) * 121666
-	h1 := int64(f[1]) * 121666
-	h2 := int64(f[2]) * 121666
-	h3 := int64(f[3]) * 121666
-	h4 := int64(f[4]) * 121666
-	h5 := int64(f[5]) * 121666
-	h6 := int64(f[6]) * 121666
-	h7 := int64(f[7]) * 121666
-	h8 := int64(f[8]) * 121666
-	h9 := int64(f[9]) * 121666
-	var carry [10]int64
-
-	carry[9] = (h9 + (1 << 24)) >> 25
-	h0 += carry[9] * 19
-	h9 -= carry[9] << 25
-	carry[1] = (h1 + (1 << 24)) >> 25
-	h2 += carry[1]
-	h1 -= carry[1] << 25
-	carry[3] = (h3 + (1 << 24)) >> 25
-	h4 += carry[3]
-	h3 -= carry[3] << 25
-	carry[5] = (h5 + (1 << 24)) >> 25
-	h6 += carry[5]
-	h5 -= carry[5] << 25
-	carry[7] = (h7 + (1 << 24)) >> 25
-	h8 += carry[7]
-	h7 -= carry[7] << 25
-
-	carry[0] = (h0 + (1 << 25)) >> 26
-	h1 += carry[0]
-	h0 -= carry[0] << 26
-	carry[2] = (h2 + (1 << 25)) >> 26
-	h3 += carry[2]
-	h2 -= carry[2] << 26
-	carry[4] = (h4 + (1 << 25)) >> 26
-	h5 += carry[4]
-	h4 -= carry[4] << 26
-	carry[6] = (h6 + (1 << 25)) >> 26
-	h7 += carry[6]
-	h6 -= carry[6] << 26
-	carry[8] = (h8 + (1 << 25)) >> 26
-	h9 += carry[8]
-	h8 -= carry[8] << 26
-
-	h[0] = int32(h0)
-	h[1] = int32(h1)
-	h[2] = int32(h2)
-	h[3] = int32(h3)
-	h[4] = int32(h4)
-	h[5] = int32(h5)
-	h[6] = int32(h6)
-	h[7] = int32(h7)
-	h[8] = int32(h8)
-	h[9] = int32(h9)
-}
-
-// feInvert sets out = z^-1.
-func feInvert(out, z *fieldElement) {
-	var t0, t1, t2, t3 fieldElement
-	var i int
-
-	feSquare(&t0, z)
-	for i = 1; i < 1; i++ {
-		feSquare(&t0, &t0)
-	}
-	feSquare(&t1, &t0)
-	for i = 1; i < 2; i++ {
-		feSquare(&t1, &t1)
-	}
-	feMul(&t1, z, &t1)
-	feMul(&t0, &t0, &t1)
-	feSquare(&t2, &t0)
-	for i = 1; i < 1; i++ {
-		feSquare(&t2, &t2)
-	}
-	feMul(&t1, &t1, &t2)
-	feSquare(&t2, &t1)
-	for i = 1; i < 5; i++ {
-		feSquare(&t2, &t2)
-	}
-	feMul(&t1, &t2, &t1)
-	feSquare(&t2, &t1)
-	for i = 1; i < 10; i++ {
-		feSquare(&t2, &t2)
-	}
-	feMul(&t2, &t2, &t1)
-	feSquare(&t3, &t2)
-	for i = 1; i < 20; i++ {
-		feSquare(&t3, &t3)
-	}
-	feMul(&t2, &t3, &t2)
-	feSquare(&t2, &t2)
-	for i = 1; i < 10; i++ {
-		feSquare(&t2, &t2)
-	}
-	feMul(&t1, &t2, &t1)
-	feSquare(&t2, &t1)
-	for i = 1; i < 50; i++ {
-		feSquare(&t2, &t2)
-	}
-	feMul(&t2, &t2, &t1)
-	feSquare(&t3, &t2)
-	for i = 1; i < 100; i++ {
-		feSquare(&t3, &t3)
-	}
-	feMul(&t2, &t3, &t2)
-	feSquare(&t2, &t2)
-	for i = 1; i < 50; i++ {
-		feSquare(&t2, &t2)
-	}
-	feMul(&t1, &t2, &t1)
-	feSquare(&t1, &t1)
-	for i = 1; i < 5; i++ {
-		feSquare(&t1, &t1)
-	}
-	feMul(out, &t1, &t0)
-}
-
-func scalarMult(out, in, base *[32]byte) {
-	var e [32]byte
-
-	copy(e[:], in[:])
-	e[0] &= 248
-	e[31] &= 127
-	e[31] |= 64
-
-	var x1, x2, z2, x3, z3, tmp0, tmp1 fieldElement
-	feFromBytes(&x1, base)
-	feOne(&x2)
-	feCopy(&x3, &x1)
-	feOne(&z3)
-
-	swap := int32(0)
-	for pos := 254; pos >= 0; pos-- {
-		b := e[pos/8] >> uint(pos&7)
-		b &= 1
-		swap ^= int32(b)
-		feCSwap(&x2, &x3, swap)
-		feCSwap(&z2, &z3, swap)
-		swap = int32(b)
-
-		feSub(&tmp0, &x3, &z3)
-		feSub(&tmp1, &x2, &z2)
-		feAdd(&x2, &x2, &z2)
-		feAdd(&z2, &x3, &z3)
-		feMul(&z3, &tmp0, &x2)
-		feMul(&z2, &z2, &tmp1)
-		feSquare(&tmp0, &tmp1)
-		feSquare(&tmp1, &x2)
-		feAdd(&x3, &z3, &z2)
-		feSub(&z2, &z3, &z2)
-		feMul(&x2, &tmp1, &tmp0)
-		feSub(&tmp1, &tmp1, &tmp0)
-		feSquare(&z2, &z2)
-		feMul121666(&z3, &tmp1)
-		feSquare(&x3, &x3)
-		feAdd(&tmp0, &tmp0, &z3)
-		feMul(&z3, &x1, &z2)
-		feMul(&z2, &tmp1, &tmp0)
-	}
-
-	feCSwap(&x2, &x3, swap)
-	feCSwap(&z2, &z3, swap)
-
-	feInvert(&z2, &z2)
-	feMul(&x2, &x2, &z2)
-	feToBytes(out, &x2)
-}
diff --git a/vendor/golang.org/x/crypto/curve25519/freeze_amd64.s b/vendor/golang.org/x/crypto/curve25519/freeze_amd64.s
index 932800b..536479b 100644
--- a/vendor/golang.org/x/crypto/curve25519/freeze_amd64.s
+++ b/vendor/golang.org/x/crypto/curve25519/freeze_amd64.s
@@ -7,6 +7,8 @@
 
 // +build amd64,!gccgo,!appengine
 
+#include "const_amd64.h"
+
 // func freeze(inout *[5]uint64)
 TEXT ·freeze(SB),7,$0-8
 	MOVQ inout+0(FP), DI
@@ -16,7 +18,7 @@ TEXT ·freeze(SB),7,$0-8
 	MOVQ 16(DI),CX
 	MOVQ 24(DI),R8
 	MOVQ 32(DI),R9
-	MOVQ ·REDMASK51(SB),AX
+	MOVQ $REDMASK51,AX
 	MOVQ AX,R10
 	SUBQ $18,R10
 	MOVQ $3,R11
diff --git a/vendor/golang.org/x/crypto/curve25519/ladderstep_amd64.s b/vendor/golang.org/x/crypto/curve25519/ladderstep_amd64.s
index ee7b36c..7074e5c 100644
--- a/vendor/golang.org/x/crypto/curve25519/ladderstep_amd64.s
+++ b/vendor/golang.org/x/crypto/curve25519/ladderstep_amd64.s
@@ -7,6 +7,8 @@
 
 // +build amd64,!gccgo,!appengine
 
+#include "const_amd64.h"
+
 // func ladderstep(inout *[5][5]uint64)
 TEXT ·ladderstep(SB),0,$296-8
 	MOVQ inout+0(FP),DI
@@ -118,7 +120,7 @@ TEXT ·ladderstep(SB),0,$296-8
 	MULQ 72(SP)
 	ADDQ AX,R12
 	ADCQ DX,R13
-	MOVQ ·REDMASK51(SB),DX
+	MOVQ $REDMASK51,DX
 	SHLQ $13,CX:SI
 	ANDQ DX,SI
 	SHLQ $13,R9:R8
@@ -233,7 +235,7 @@ TEXT ·ladderstep(SB),0,$296-8
 	MULQ 32(SP)
 	ADDQ AX,R12
 	ADCQ DX,R13
-	MOVQ ·REDMASK51(SB),DX
+	MOVQ $REDMASK51,DX
 	SHLQ $13,CX:SI
 	ANDQ DX,SI
 	SHLQ $13,R9:R8
@@ -438,7 +440,7 @@ TEXT ·ladderstep(SB),0,$296-8
 	MULQ 72(SP)
 	ADDQ AX,R12
 	ADCQ DX,R13
-	MOVQ ·REDMASK51(SB),DX
+	MOVQ $REDMASK51,DX
 	SHLQ $13,CX:SI
 	ANDQ DX,SI
 	SHLQ $13,R9:R8
@@ -588,7 +590,7 @@ TEXT ·ladderstep(SB),0,$296-8
 	MULQ 32(SP)
 	ADDQ AX,R12
 	ADCQ DX,R13
-	MOVQ ·REDMASK51(SB),DX
+	MOVQ $REDMASK51,DX
 	SHLQ $13,CX:SI
 	ANDQ DX,SI
 	SHLQ $13,R9:R8
@@ -728,7 +730,7 @@ TEXT ·ladderstep(SB),0,$296-8
 	MULQ 152(DI)
 	ADDQ AX,R12
 	ADCQ DX,R13
-	MOVQ ·REDMASK51(SB),DX
+	MOVQ $REDMASK51,DX
 	SHLQ $13,CX:SI
 	ANDQ DX,SI
 	SHLQ $13,R9:R8
@@ -843,7 +845,7 @@ TEXT ·ladderstep(SB),0,$296-8
 	MULQ 192(DI)
 	ADDQ AX,R12
 	ADCQ DX,R13
-	MOVQ ·REDMASK51(SB),DX
+	MOVQ $REDMASK51,DX
 	SHLQ $13,CX:SI
 	ANDQ DX,SI
 	SHLQ $13,R9:R8
@@ -993,7 +995,7 @@ TEXT ·ladderstep(SB),0,$296-8
 	MULQ 32(DI)
 	ADDQ AX,R12
 	ADCQ DX,R13
-	MOVQ ·REDMASK51(SB),DX
+	MOVQ $REDMASK51,DX
 	SHLQ $13,CX:SI
 	ANDQ DX,SI
 	SHLQ $13,R9:R8
@@ -1143,7 +1145,7 @@ TEXT ·ladderstep(SB),0,$296-8
 	MULQ 112(SP)
 	ADDQ AX,R12
 	ADCQ DX,R13
-	MOVQ ·REDMASK51(SB),DX
+	MOVQ $REDMASK51,DX
 	SHLQ $13,CX:SI
 	ANDQ DX,SI
 	SHLQ $13,R9:R8
@@ -1329,7 +1331,7 @@ TEXT ·ladderstep(SB),0,$296-8
 	MULQ 192(SP)
 	ADDQ AX,R12
 	ADCQ DX,R13
-	MOVQ ·REDMASK51(SB),DX
+	MOVQ $REDMASK51,DX
 	SHLQ $13,CX:SI
 	ANDQ DX,SI
 	SHLQ $13,R9:R8
diff --git a/vendor/golang.org/x/crypto/curve25519/mul_amd64.s b/vendor/golang.org/x/crypto/curve25519/mul_amd64.s
index 33ce57d..b162e65 100644
--- a/vendor/golang.org/x/crypto/curve25519/mul_amd64.s
+++ b/vendor/golang.org/x/crypto/curve25519/mul_amd64.s
@@ -7,6 +7,8 @@
 
 // +build amd64,!gccgo,!appengine
 
+#include "const_amd64.h"
+
 // func mul(dest, a, b *[5]uint64)
 TEXT ·mul(SB),0,$16-24
 	MOVQ dest+0(FP), DI
@@ -121,7 +123,7 @@ TEXT ·mul(SB),0,$16-24
 	MULQ 32(CX)
 	ADDQ AX,R14
 	ADCQ DX,R15
-	MOVQ ·REDMASK51(SB),SI
+	MOVQ $REDMASK51,SI
 	SHLQ $13,R9:R8
 	ANDQ SI,R8
 	SHLQ $13,R11:R10
diff --git a/vendor/golang.org/x/crypto/curve25519/square_amd64.s b/vendor/golang.org/x/crypto/curve25519/square_amd64.s
index 3a92804..4e864a8 100644
--- a/vendor/golang.org/x/crypto/curve25519/square_amd64.s
+++ b/vendor/golang.org/x/crypto/curve25519/square_amd64.s
@@ -7,6 +7,8 @@
 
 // +build amd64,!gccgo,!appengine
 
+#include "const_amd64.h"
+
 // func square(out, in *[5]uint64)
 TEXT ·square(SB),7,$0-16
 	MOVQ out+0(FP), DI
@@ -84,7 +86,7 @@ TEXT ·square(SB),7,$0-16
 	MULQ 32(SI)
 	ADDQ AX,R13
 	ADCQ DX,R14
-	MOVQ ·REDMASK51(SB),SI
+	MOVQ $REDMASK51,SI
 	SHLQ $13,R8:CX
 	ANDQ SI,CX
 	SHLQ $13,R10:R9
diff --git a/vendor/golang.org/x/crypto/ssh/channel.go b/vendor/golang.org/x/crypto/ssh/channel.go
index 6d709b5..195530e 100644
--- a/vendor/golang.org/x/crypto/ssh/channel.go
+++ b/vendor/golang.org/x/crypto/ssh/channel.go
@@ -461,8 +461,8 @@ func (m *mux) newChannel(chanType string, direction channelDirection, extraData
 		pending:          newBuffer(),
 		extPending:       newBuffer(),
 		direction:        direction,
-		incomingRequests: make(chan *Request, 16),
-		msg:              make(chan interface{}, 16),
+		incomingRequests: make(chan *Request, chanSize),
+		msg:              make(chan interface{}, chanSize),
 		chanType:         chanType,
 		extraData:        extraData,
 		mux:              m,
diff --git a/vendor/golang.org/x/crypto/ssh/cipher.go b/vendor/golang.org/x/crypto/ssh/cipher.go
index 34d3917..13484ab 100644
--- a/vendor/golang.org/x/crypto/ssh/cipher.go
+++ b/vendor/golang.org/x/crypto/ssh/cipher.go
@@ -135,6 +135,7 @@ const prefixLen = 5
 type streamPacketCipher struct {
 	mac    hash.Hash
 	cipher cipher.Stream
+	etm    bool
 
 	// The following members are to avoid per-packet allocations.
 	prefix      [prefixLen]byte
@@ -150,7 +151,14 @@ func (s *streamPacketCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, err
 		return nil, err
 	}
 
-	s.cipher.XORKeyStream(s.prefix[:], s.prefix[:])
+	var encryptedPaddingLength [1]byte
+	if s.mac != nil && s.etm {
+		copy(encryptedPaddingLength[:], s.prefix[4:5])
+		s.cipher.XORKeyStream(s.prefix[4:5], s.prefix[4:5])
+	} else {
+		s.cipher.XORKeyStream(s.prefix[:], s.prefix[:])
+	}
+
 	length := binary.BigEndian.Uint32(s.prefix[0:4])
 	paddingLength := uint32(s.prefix[4])
 
@@ -159,7 +167,12 @@ func (s *streamPacketCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, err
 		s.mac.Reset()
 		binary.BigEndian.PutUint32(s.seqNumBytes[:], seqNum)
 		s.mac.Write(s.seqNumBytes[:])
-		s.mac.Write(s.prefix[:])
+		if s.etm {
+			s.mac.Write(s.prefix[:4])
+			s.mac.Write(encryptedPaddingLength[:])
+		} else {
+			s.mac.Write(s.prefix[:])
+		}
 		macSize = uint32(s.mac.Size())
 	}
 
@@ -184,10 +197,17 @@ func (s *streamPacketCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, err
 	}
 	mac := s.packetData[length-1:]
 	data := s.packetData[:length-1]
+
+	if s.mac != nil && s.etm {
+		s.mac.Write(data)
+	}
+
 	s.cipher.XORKeyStream(data, data)
 
 	if s.mac != nil {
-		s.mac.Write(data)
+		if !s.etm {
+			s.mac.Write(data)
+		}
 		s.macResult = s.mac.Sum(s.macResult[:0])
 		if subtle.ConstantTimeCompare(s.macResult, mac) != 1 {
 			return nil, errors.New("ssh: MAC failure")
@@ -203,7 +223,13 @@ func (s *streamPacketCipher) writePacket(seqNum uint32, w io.Writer, rand io.Rea
 		return errors.New("ssh: packet too large")
 	}
 
-	paddingLength := packetSizeMultiple - (prefixLen+len(packet))%packetSizeMultiple
+	aadlen := 0
+	if s.mac != nil && s.etm {
+		// packet length is not encrypted for EtM modes
+		aadlen = 4
+	}
+
+	paddingLength := packetSizeMultiple - (prefixLen+len(packet)-aadlen)%packetSizeMultiple
 	if paddingLength < 4 {
 		paddingLength += packetSizeMultiple
 	}
@@ -220,15 +246,37 @@ func (s *streamPacketCipher) writePacket(seqNum uint32, w io.Writer, rand io.Rea
 		s.mac.Reset()
 		binary.BigEndian.PutUint32(s.seqNumBytes[:], seqNum)
 		s.mac.Write(s.seqNumBytes[:])
+
+		if s.etm {
+			// For EtM algorithms, the packet length must stay unencrypted,
+			// but the following data (padding length) must be encrypted
+			s.cipher.XORKeyStream(s.prefix[4:5], s.prefix[4:5])
+		}
+
 		s.mac.Write(s.prefix[:])
-		s.mac.Write(packet)
-		s.mac.Write(padding)
+
+		if !s.etm {
+			// For non-EtM algorithms, the algorithm is applied on unencrypted data
+			s.mac.Write(packet)
+			s.mac.Write(padding)
+		}
+	}
+
+	if !(s.mac != nil && s.etm) {
+		// For EtM algorithms, the padding length has already been encrypted
+		// and the packet length must remain unencrypted
+		s.cipher.XORKeyStream(s.prefix[:], s.prefix[:])
 	}
 
-	s.cipher.XORKeyStream(s.prefix[:], s.prefix[:])
 	s.cipher.XORKeyStream(packet, packet)
 	s.cipher.XORKeyStream(padding, padding)
 
+	if s.mac != nil && s.etm {
+		// For EtM algorithms, packet and padding must be encrypted
+		s.mac.Write(packet)
+		s.mac.Write(padding)
+	}
+
 	if _, err := w.Write(s.prefix[:]); err != nil {
 		return err
 	}
diff --git a/vendor/golang.org/x/crypto/ssh/client.go b/vendor/golang.org/x/crypto/ssh/client.go
index 0212a20..c97f297 100644
--- a/vendor/golang.org/x/crypto/ssh/client.go
+++ b/vendor/golang.org/x/crypto/ssh/client.go
@@ -40,7 +40,7 @@ func (c *Client) HandleChannelOpen(channelType string) <-chan NewChannel {
 		return nil
 	}
 
-	ch = make(chan NewChannel, 16)
+	ch = make(chan NewChannel, chanSize)
 	c.channelHandlers[channelType] = ch
 	return ch
 }
@@ -97,13 +97,11 @@ func (c *connection) clientHandshake(dialAddress string, config *ClientConfig) e
 	c.transport = newClientTransport(
 		newTransport(c.sshConn.conn, config.Rand, true /* is client */),
 		c.clientVersion, c.serverVersion, config, dialAddress, c.sshConn.RemoteAddr())
-	if err := c.transport.requestInitialKeyChange(); err != nil {
+	if err := c.transport.waitSession(); err != nil {
 		return err
 	}
 
-	// We just did the key change, so the session ID is established.
 	c.sessionID = c.transport.getSessionID()
-
 	return c.clientAuthenticate(config)
 }
 
diff --git a/vendor/golang.org/x/crypto/ssh/client_auth.go b/vendor/golang.org/x/crypto/ssh/client_auth.go
index 294af0d..fd1ec5d 100644
--- a/vendor/golang.org/x/crypto/ssh/client_auth.go
+++ b/vendor/golang.org/x/crypto/ssh/client_auth.go
@@ -30,8 +30,10 @@ func (c *connection) clientAuthenticate(config *ClientConfig) error {
 	// then any untried methods suggested by the server.
 	tried := make(map[string]bool)
 	var lastMethods []string
+
+	sessionID := c.transport.getSessionID()
 	for auth := AuthMethod(new(noneAuth)); auth != nil; {
-		ok, methods, err := auth.auth(c.transport.getSessionID(), config.User, c.transport, config.Rand)
+		ok, methods, err := auth.auth(sessionID, config.User, c.transport, config.Rand)
 		if err != nil {
 			return err
 		}
diff --git a/vendor/golang.org/x/crypto/ssh/common.go b/vendor/golang.org/x/crypto/ssh/common.go
index 2c72ab5..8656d0f 100644
--- a/vendor/golang.org/x/crypto/ssh/common.go
+++ b/vendor/golang.org/x/crypto/ssh/common.go
@@ -56,7 +56,7 @@ var supportedHostKeyAlgos = []string{
 // This is based on RFC 4253, section 6.4, but with hmac-md5 variants removed
 // because they have reached the end of their useful life.
 var supportedMACs = []string{
-	"hmac-sha2-256", "hmac-sha1", "hmac-sha1-96",
+	"hmac-sha2-256-etm@openssh.com", "hmac-sha2-256", "hmac-sha1", "hmac-sha1-96",
 }
 
 var supportedCompressions = []string{compressionNone}
@@ -104,6 +104,21 @@ type directionAlgorithms struct {
 	Compression string
 }
 
+// rekeyBytes returns a rekeying intervals in bytes.
+func (a *directionAlgorithms) rekeyBytes() int64 {
+	// According to RFC4344 block ciphers should rekey after
+	// 2^(BLOCKSIZE/4) blocks. For all AES flavors BLOCKSIZE is
+	// 128.
+	switch a.Cipher {
+	case "aes128-ctr", "aes192-ctr", "aes256-ctr", gcmCipherID, aes128cbcID:
+		return 16 * (1 << 32)
+
+	}
+
+	// For others, stick with RFC4253 recommendation to rekey after 1 Gb of data.
+	return 1 << 30
+}
+
 type algorithms struct {
 	kex     string
 	hostKey string
diff --git a/vendor/golang.org/x/crypto/ssh/handshake.go b/vendor/golang.org/x/crypto/ssh/handshake.go
index 37d42e4..8de6506 100644
--- a/vendor/golang.org/x/crypto/ssh/handshake.go
+++ b/vendor/golang.org/x/crypto/ssh/handshake.go
@@ -19,6 +19,11 @@ import (
 // messages are wrong when using ECDH.
 const debugHandshake = false
 
+// chanSize sets the amount of buffering SSH connections. This is
+// primarily for testing: setting chanSize=0 uncovers deadlocks more
+// quickly.
+const chanSize = 16
+
 // keyingTransport is a packet based transport that supports key
 // changes. It need not be thread-safe. It should pass through
 // msgNewKeys in both directions.
@@ -53,34 +58,58 @@ type handshakeTransport struct {
 	incoming  chan []byte
 	readError error
 
+	mu             sync.Mutex
+	writeError     error
+	sentInitPacket []byte
+	sentInitMsg    *kexInitMsg
+	pendingPackets [][]byte // Used when a key exchange is in progress.
+
+	// If the read loop wants to schedule a kex, it pings this
+	// channel, and the write loop will send out a kex
+	// message.
+	requestKex chan struct{}
+
+	// If the other side requests or confirms a kex, its kexInit
+	// packet is sent here for the write loop to find it.
+	startKex chan *pendingKex
+
 	// data for host key checking
 	hostKeyCallback func(hostname string, remote net.Addr, key PublicKey) error
 	dialAddress     string
 	remoteAddr      net.Addr
 
-	readSinceKex uint64
+	// Algorithms agreed in the last key exchange.
+	algorithms *algorithms
+
+	readPacketsLeft uint32
+	readBytesLeft   int64
 
-	// Protects the writing side of the connection
-	mu              sync.Mutex
-	cond            *sync.Cond
-	sentInitPacket  []byte
-	sentInitMsg     *kexInitMsg
-	writtenSinceKex uint64
-	writeError      error
+	writePacketsLeft uint32
+	writeBytesLeft   int64
 
 	// The session ID or nil if first kex did not complete yet.
 	sessionID []byte
 }
 
+type pendingKex struct {
+	otherInit []byte
+	done      chan error
+}
+
 func newHandshakeTransport(conn keyingTransport, config *Config, clientVersion, serverVersion []byte) *handshakeTransport {
 	t := &handshakeTransport{
 		conn:          conn,
 		serverVersion: serverVersion,
 		clientVersion: clientVersion,
-		incoming:      make(chan []byte, 16),
-		config:        config,
+		incoming:      make(chan []byte, chanSize),
+		requestKex:    make(chan struct{}, 1),
+		startKex:      make(chan *pendingKex, 1),
+
+		config: config,
 	}
-	t.cond = sync.NewCond(&t.mu)
+
+	// We always start with a mandatory key exchange.
+	t.requestKex <- struct{}{}
 	return t
 }
 
@@ -95,6 +124,7 @@ func newClientTransport(conn keyingTransport, clientVersion, serverVersion []byt
 		t.hostKeyAlgorithms = supportedHostKeyAlgos
 	}
 	go t.readLoop()
+	go t.kexLoop()
 	return t
 }
 
@@ -102,6 +132,7 @@ func newServerTransport(conn keyingTransport, clientVersion, serverVersion []byt
 	t := newHandshakeTransport(conn, &config.Config, clientVersion, serverVersion)
 	t.hostKeys = config.hostKeys
 	go t.readLoop()
+	go t.kexLoop()
 	return t
 }
 
@@ -109,6 +140,20 @@ func (t *handshakeTransport) getSessionID() []byte {
 	return t.sessionID
 }
 
+// waitSession waits for the session to be established. This should be
+// the first thing to call after instantiating handshakeTransport.
+func (t *handshakeTransport) waitSession() error {
+	p, err := t.readPacket()
+	if err != nil {
+		return err
+	}
+	if p[0] != msgNewKeys {
+		return fmt.Errorf("ssh: first packet should be msgNewKeys")
+	}
+
+	return nil
+}
+
 func (t *handshakeTransport) id() string {
 	if len(t.hostKeys) > 0 {
 		return "server"
@@ -116,6 +161,20 @@ func (t *handshakeTransport) id() string {
 	return "client"
 }
 
+func (t *handshakeTransport) printPacket(p []byte, write bool) {
+	action := "got"
+	if write {
+		action = "sent"
+	}
+
+	if p[0] == msgChannelData || p[0] == msgChannelExtendedData {
+		log.Printf("%s %s data (packet %d bytes)", t.id(), action, len(p))
+	} else {
+		msg, err := decode(p)
+		log.Printf("%s %s %T %v (%v)", t.id(), action, msg, msg, err)
+	}
+}
+
 func (t *handshakeTransport) readPacket() ([]byte, error) {
 	p, ok := <-t.incoming
 	if !ok {
@@ -125,8 +184,10 @@ func (t *handshakeTransport) readPacket() ([]byte, error) {
 }
 
 func (t *handshakeTransport) readLoop() {
+	first := true
 	for {
-		p, err := t.readOnePacket()
+		p, err := t.readOnePacket(first)
+		first = false
 		if err != nil {
 			t.readError = err
 			close(t.incoming)
@@ -138,67 +199,204 @@ func (t *handshakeTransport) readLoop() {
 		t.incoming <- p
 	}
 
-	// If we can't read, declare the writing part dead too.
+	// Stop writers too.
+	t.recordWriteError(t.readError)
+
+	// Unblock the writer should it wait for this.
+	close(t.startKex)
+
+	// Don't close t.requestKex; it's also written to from writePacket.
+}
+
+func (t *handshakeTransport) pushPacket(p []byte) error {
+	if debugHandshake {
+		t.printPacket(p, true)
+	}
+	return t.conn.writePacket(p)
+}
+
+func (t *handshakeTransport) getWriteError() error {
 	t.mu.Lock()
 	defer t.mu.Unlock()
-	if t.writeError == nil {
-		t.writeError = t.readError
+	return t.writeError
+}
+
+func (t *handshakeTransport) recordWriteError(err error) {
+	t.mu.Lock()
+	defer t.mu.Unlock()
+	if t.writeError == nil && err != nil {
+		t.writeError = err
 	}
-	t.cond.Broadcast()
 }
 
-func (t *handshakeTransport) readOnePacket() ([]byte, error) {
-	if t.readSinceKex > t.config.RekeyThreshold {
-		if err := t.requestKeyChange(); err != nil {
-			return nil, err
+func (t *handshakeTransport) requestKeyExchange() {
+	select {
+	case t.requestKex <- struct{}{}:
+	default:
+		// something already requested a kex, so do nothing.
+	}
+}
+
+func (t *handshakeTransport) kexLoop() {
+
+write:
+	for t.getWriteError() == nil {
+		var request *pendingKex
+		var sent bool
+
+		for request == nil || !sent {
+			var ok bool
+			select {
+			case request, ok = <-t.startKex:
+				if !ok {
+					break write
+				}
+			case <-t.requestKex:
+				break
+			}
+
+			if !sent {
+				if err := t.sendKexInit(); err != nil {
+					t.recordWriteError(err)
+					break
+				}
+				sent = true
+			}
+		}
+
+		if err := t.getWriteError(); err != nil {
+			if request != nil {
+				request.done <- err
+			}
+			break
+		}
+
+		// We're not servicing t.requestKex, but that is OK:
+		// we never block on sending to t.requestKex.
+
+		// We're not servicing t.startKex, but the remote end
+		// has just sent us a kexInitMsg, so it can't send
+		// another key change request, until we close the done
+		// channel on the pendingKex request.
+
+		err := t.enterKeyExchange(request.otherInit)
+
+		t.mu.Lock()
+		t.writeError = err
+		t.sentInitPacket = nil
+		t.sentInitMsg = nil
+		t.writePacketsLeft = packetRekeyThreshold
+		if t.config.RekeyThreshold > 0 {
+			t.writeBytesLeft = int64(t.config.RekeyThreshold)
+		} else if t.algorithms != nil {
+			t.writeBytesLeft = t.algorithms.w.rekeyBytes()
+		}
+
+		// we have completed the key exchange. Since the
+		// reader is still blocked, it is safe to clear out
+		// the requestKex channel. This avoids the situation
+		// where: 1) we consumed our own request for the
+		// initial kex, and 2) the kex from the remote side
+		// caused another send on the requestKex channel,
+	clear:
+		for {
+			select {
+			case <-t.requestKex:
+				//
+			default:
+				break clear
+			}
+		}
+
+		request.done <- t.writeError
+
+		// kex finished. Push packets that we received while
+		// the kex was in progress. Don't look at t.startKex
+		// and don't increment writtenSinceKex: if we trigger
+		// another kex while we are still busy with the last
+		// one, things will become very confusing.
+		for _, p := range t.pendingPackets {
+			t.writeError = t.pushPacket(p)
+			if t.writeError != nil {
+				break
+			}
 		}
+		t.pendingPackets = t.pendingPackets[:0]
+		t.mu.Unlock()
 	}
 
+	// drain startKex channel. We don't service t.requestKex
+	// because nobody does blocking sends there.
+	go func() {
+		for init := range t.startKex {
+			init.done <- t.writeError
+		}
+	}()
+
+	// Unblock reader.
+	t.conn.Close()
+}
+
+// The protocol uses uint32 for packet counters, so we can't let them
+// reach 1<<32.  We will actually read and write more packets than
+// this, though: the other side may send more packets, and after we
+// hit this limit on writing we will send a few more packets for the
+// key exchange itself.
+const packetRekeyThreshold = (1 << 31)
+
+func (t *handshakeTransport) readOnePacket(first bool) ([]byte, error) {
 	p, err := t.conn.readPacket()
 	if err != nil {
 		return nil, err
 	}
 
-	t.readSinceKex += uint64(len(p))
+	if t.readPacketsLeft > 0 {
+		t.readPacketsLeft--
+	} else {
+		t.requestKeyExchange()
+	}
+
+	if t.readBytesLeft > 0 {
+		t.readBytesLeft -= int64(len(p))
+	} else {
+		t.requestKeyExchange()
+	}
+
 	if debugHandshake {
-		if p[0] == msgChannelData || p[0] == msgChannelExtendedData {
-			log.Printf("%s got data (packet %d bytes)", t.id(), len(p))
-		} else {
-			msg, err := decode(p)
-			log.Printf("%s got %T %v (%v)", t.id(), msg, msg, err)
-		}
+		t.printPacket(p, false)
+	}
+
+	if first && p[0] != msgKexInit {
+		return nil, fmt.Errorf("ssh: first packet should be msgKexInit")
 	}
+
 	if p[0] != msgKexInit {
 		return p, nil
 	}
 
-	t.mu.Lock()
-
 	firstKex := t.sessionID == nil
 
-	err = t.enterKeyExchangeLocked(p)
-	if err != nil {
-		// drop connection
-		t.conn.Close()
-		t.writeError = err
+	kex := pendingKex{
+		done:      make(chan error, 1),
+		otherInit: p,
 	}
+	t.startKex <- &kex
+	err = <-kex.done
 
 	if debugHandshake {
 		log.Printf("%s exited key exchange (first %v), err %v", t.id(), firstKex, err)
 	}
 
-	// Unblock writers.
-	t.sentInitMsg = nil
-	t.sentInitPacket = nil
-	t.cond.Broadcast()
-	t.writtenSinceKex = 0
-	t.mu.Unlock()
-
 	if err != nil {
 		return nil, err
 	}
 
-	t.readSinceKex = 0
+	t.readPacketsLeft = packetRekeyThreshold
+	if t.config.RekeyThreshold > 0 {
+		t.readBytesLeft = int64(t.config.RekeyThreshold)
+	} else {
+		t.readBytesLeft = t.algorithms.r.rekeyBytes()
+	}
 
 	// By default, a key exchange is hidden from higher layers by
 	// translating it into msgIgnore.
@@ -213,61 +411,16 @@ func (t *handshakeTransport) readOnePacket() ([]byte, error) {
 	return successPacket, nil
 }
 
-// keyChangeCategory describes whether a key exchange is the first on a
-// connection, or a subsequent one.
-type keyChangeCategory bool
-
-const (
-	firstKeyExchange      keyChangeCategory = true
-	subsequentKeyExchange keyChangeCategory = false
-)
-
-// sendKexInit sends a key change message, and returns the message
-// that was sent. After initiating the key change, all writes will be
-// blocked until the change is done, and a failed key change will
-// close the underlying transport. This function is safe for
-// concurrent use by multiple goroutines.
-func (t *handshakeTransport) sendKexInit(isFirst keyChangeCategory) error {
-	var err error
-
+// sendKexInit sends a key change message.
+func (t *handshakeTransport) sendKexInit() error {
 	t.mu.Lock()
-	// If this is the initial key change, but we already have a sessionID,
-	// then do nothing because the key exchange has already completed
-	// asynchronously.
-	if !isFirst || t.sessionID == nil {
-		_, _, err = t.sendKexInitLocked(isFirst)
-	}
-	t.mu.Unlock()
-	if err != nil {
-		return err
-	}
-	if isFirst {
-		if packet, err := t.readPacket(); err != nil {
-			return err
-		} else if packet[0] != msgNewKeys {
-			return unexpectedMessageError(msgNewKeys, packet[0])
-		}
-	}
-	return nil
-}
-
-func (t *handshakeTransport) requestInitialKeyChange() error {
-	return t.sendKexInit(firstKeyExchange)
-}
-
-func (t *handshakeTransport) requestKeyChange() error {
-	return t.sendKexInit(subsequentKeyExchange)
-}
-
-// sendKexInitLocked sends a key change message. t.mu must be locked
-// while this happens.
-func (t *handshakeTransport) sendKexInitLocked(isFirst keyChangeCategory) (*kexInitMsg, []byte, error) {
-	// kexInits may be sent either in response to the other side,
-	// or because our side wants to initiate a key change, so we
-	// may have already sent a kexInit. In that case, don't send a
-	// second kexInit.
+	defer t.mu.Unlock()
 	if t.sentInitMsg != nil {
-		return t.sentInitMsg, t.sentInitPacket, nil
+		// kexInits may be sent either in response to the other side,
+		// or because our side wants to initiate a key change, so we
+		// may have already sent a kexInit. In that case, don't send a
+		// second kexInit.
+		return nil
 	}
 
 	msg := &kexInitMsg{
@@ -295,53 +448,65 @@ func (t *handshakeTransport) sendKexInitLocked(isFirst keyChangeCategory) (*kexI
 	packetCopy := make([]byte, len(packet))
 	copy(packetCopy, packet)
 
-	if err := t.conn.writePacket(packetCopy); err != nil {
-		return nil, nil, err
+	if err := t.pushPacket(packetCopy); err != nil {
+		return err
 	}
 
 	t.sentInitMsg = msg
 	t.sentInitPacket = packet
-	return msg, packet, nil
+
+	return nil
 }
 
 func (t *handshakeTransport) writePacket(p []byte) error {
+	switch p[0] {
+	case msgKexInit:
+		return errors.New("ssh: only handshakeTransport can send kexInit")
+	case msgNewKeys:
+		return errors.New("ssh: only handshakeTransport can send newKeys")
+	}
+
 	t.mu.Lock()
 	defer t.mu.Unlock()
+	if t.writeError != nil {
+		return t.writeError
+	}
 
-	if t.writtenSinceKex > t.config.RekeyThreshold {
-		t.sendKexInitLocked(subsequentKeyExchange)
+	if t.sentInitMsg != nil {
+		// Copy the packet so the writer can reuse the buffer.
+		cp := make([]byte, len(p))
+		copy(cp, p)
+		t.pendingPackets = append(t.pendingPackets, cp)
+		return nil
 	}
-	for t.sentInitMsg != nil && t.writeError == nil {
-		t.cond.Wait()
+
+	if t.writeBytesLeft > 0 {
+		t.writeBytesLeft -= int64(len(p))
+	} else {
+		t.requestKeyExchange()
 	}
-	if t.writeError != nil {
-		return t.writeError
+
+	if t.writePacketsLeft > 0 {
+		t.writePacketsLeft--
+	} else {
+		t.requestKeyExchange()
 	}
-	t.writtenSinceKex += uint64(len(p))
 
-	switch p[0] {
-	case msgKexInit:
-		return errors.New("ssh: only handshakeTransport can send kexInit")
-	case msgNewKeys:
-		return errors.New("ssh: only handshakeTransport can send newKeys")
-	default:
-		return t.conn.writePacket(p)
+	if err := t.pushPacket(p); err != nil {
+		t.writeError = err
 	}
+
+	return nil
 }
 
 func (t *handshakeTransport) Close() error {
 	return t.conn.Close()
 }
 
-// enterKeyExchange runs the key exchange. t.mu must be held while running this.
-func (t *handshakeTransport) enterKeyExchangeLocked(otherInitPacket []byte) error {
+func (t *handshakeTransport) enterKeyExchange(otherInitPacket []byte) error {
 	if debugHandshake {
 		log.Printf("%s entered key exchange", t.id())
 	}
-	myInit, myInitPacket, err := t.sendKexInitLocked(subsequentKeyExchange)
-	if err != nil {
-		return err
-	}
 
 	otherInit := &kexInitMsg{}
 	if err := Unmarshal(otherInitPacket, otherInit); err != nil {
@@ -352,20 +517,20 @@ func (t *handshakeTransport) enterKeyExchangeLocked(otherInitPacket []byte) erro
 		clientVersion: t.clientVersion,
 		serverVersion: t.serverVersion,
 		clientKexInit: otherInitPacket,
-		serverKexInit: myInitPacket,
+		serverKexInit: t.sentInitPacket,
 	}
 
 	clientInit := otherInit
-	serverInit := myInit
+	serverInit := t.sentInitMsg
 	if len(t.hostKeys) == 0 {
-		clientInit = myInit
-		serverInit = otherInit
+		clientInit, serverInit = serverInit, clientInit
 
-		magics.clientKexInit = myInitPacket
+		magics.clientKexInit = t.sentInitPacket
 		magics.serverKexInit = otherInitPacket
 	}
 
-	algs, err := findAgreedAlgorithms(clientInit, serverInit)
+	var err error
+	t.algorithms, err = findAgreedAlgorithms(clientInit, serverInit)
 	if err != nil {
 		return err
 	}
@@ -388,16 +553,16 @@ func (t *handshakeTransport) enterKeyExchangeLocked(otherInitPacket []byte) erro
 		}
 	}
 
-	kex, ok := kexAlgoMap[algs.kex]
+	kex, ok := kexAlgoMap[t.algorithms.kex]
 	if !ok {
-		return fmt.Errorf("ssh: unexpected key exchange algorithm %v", algs.kex)
+		return fmt.Errorf("ssh: unexpected key exchange algorithm %v", t.algorithms.kex)
 	}
 
 	var result *kexResult
 	if len(t.hostKeys) > 0 {
-		result, err = t.server(kex, algs, &magics)
+		result, err = t.server(kex, t.algorithms, &magics)
 	} else {
-		result, err = t.client(kex, algs, &magics)
+		result, err = t.client(kex, t.algorithms, &magics)
 	}
 
 	if err != nil {
@@ -409,7 +574,7 @@ func (t *handshakeTransport) enterKeyExchangeLocked(otherInitPacket []byte) erro
 	}
 	result.SessionID = t.sessionID
 
-	t.conn.prepareKeyChange(algs, result)
+	t.conn.prepareKeyChange(t.algorithms, result)
 	if err = t.conn.writePacket([]byte{msgNewKeys}); err != nil {
 		return err
 	}
diff --git a/vendor/golang.org/x/crypto/ssh/keys.go b/vendor/golang.org/x/crypto/ssh/keys.go
index 21f7d0d..f38de98 100644
--- a/vendor/golang.org/x/crypto/ssh/keys.go
+++ b/vendor/golang.org/x/crypto/ssh/keys.go
@@ -798,8 +798,8 @@ func ParseDSAPrivateKey(der []byte) (*dsa.PrivateKey, error) {
 		P       *big.Int
 		Q       *big.Int
 		G       *big.Int
-		Priv    *big.Int
 		Pub     *big.Int
+		Priv    *big.Int
 	}
 	rest, err := asn1.Unmarshal(der, &k)
 	if err != nil {
@@ -816,9 +816,9 @@ func ParseDSAPrivateKey(der []byte) (*dsa.PrivateKey, error) {
 				Q: k.Q,
 				G: k.G,
 			},
-			Y: k.Priv,
+			Y: k.Pub,
 		},
-		X: k.Pub,
+		X: k.Priv,
 	}, nil
 }
 
diff --git a/vendor/golang.org/x/crypto/ssh/mac.go b/vendor/golang.org/x/crypto/ssh/mac.go
index 07744ad..c07a062 100644
--- a/vendor/golang.org/x/crypto/ssh/mac.go
+++ b/vendor/golang.org/x/crypto/ssh/mac.go
@@ -15,6 +15,7 @@ import (
 
 type macMode struct {
 	keySize int
+	etm     bool
 	new     func(key []byte) hash.Hash
 }
 
@@ -45,13 +46,16 @@ func (t truncatingMAC) Size() int {
 func (t truncatingMAC) BlockSize() int { return t.hmac.BlockSize() }
 
 var macModes = map[string]*macMode{
-	"hmac-sha2-256": {32, func(key []byte) hash.Hash {
+	"hmac-sha2-256-etm@openssh.com": {32, true, func(key []byte) hash.Hash {
 		return hmac.New(sha256.New, key)
 	}},
-	"hmac-sha1": {20, func(key []byte) hash.Hash {
+	"hmac-sha2-256": {32, false, func(key []byte) hash.Hash {
+		return hmac.New(sha256.New, key)
+	}},
+	"hmac-sha1": {20, false, func(key []byte) hash.Hash {
 		return hmac.New(sha1.New, key)
 	}},
-	"hmac-sha1-96": {20, func(key []byte) hash.Hash {
+	"hmac-sha1-96": {20, false, func(key []byte) hash.Hash {
 		return truncatingMAC{12, hmac.New(sha1.New, key)}
 	}},
 }
diff --git a/vendor/golang.org/x/crypto/ssh/mux.go b/vendor/golang.org/x/crypto/ssh/mux.go
index f3a3ddd..27a527c 100644
--- a/vendor/golang.org/x/crypto/ssh/mux.go
+++ b/vendor/golang.org/x/crypto/ssh/mux.go
@@ -116,9 +116,9 @@ func (m *mux) Wait() error {
 func newMux(p packetConn) *mux {
 	m := &mux{
 		conn:             p,
-		incomingChannels: make(chan NewChannel, 16),
+		incomingChannels: make(chan NewChannel, chanSize),
 		globalResponses:  make(chan interface{}, 1),
-		incomingRequests: make(chan *Request, 16),
+		incomingRequests: make(chan *Request, chanSize),
 		errCond:          newCond(),
 	}
 	if debugMux {
diff --git a/vendor/golang.org/x/crypto/ssh/server.go b/vendor/golang.org/x/crypto/ssh/server.go
index 9037470..77c84d1 100644
--- a/vendor/golang.org/x/crypto/ssh/server.go
+++ b/vendor/golang.org/x/crypto/ssh/server.go
@@ -10,6 +10,7 @@ import (
 	"fmt"
 	"io"
 	"net"
+	"strings"
 )
 
 // The Permissions type holds fine-grained permissions that are
@@ -188,7 +189,7 @@ func (s *connection) serverHandshake(config *ServerConfig) (*Permissions, error)
 	tr := newTransport(s.sshConn.conn, config.Rand, false /* not client */)
 	s.transport = newServerTransport(tr, s.clientVersion, s.serverVersion, config)
 
-	if err := s.transport.requestInitialKeyChange(); err != nil {
+	if err := s.transport.waitSession(); err != nil {
 		return nil, err
 	}
 
@@ -231,7 +232,7 @@ func isAcceptableAlgo(algo string) bool {
 	return false
 }
 
-func checkSourceAddress(addr net.Addr, sourceAddr string) error {
+func checkSourceAddress(addr net.Addr, sourceAddrs string) error {
 	if addr == nil {
 		return errors.New("ssh: no address known for client, but source-address match required")
 	}
@@ -241,18 +242,20 @@ func checkSourceAddress(addr net.Addr, sourceAddr string) error {
 		return fmt.Errorf("ssh: remote address %v is not an TCP address when checking source-address match", addr)
 	}
 
-	if allowedIP := net.ParseIP(sourceAddr); allowedIP != nil {
-		if allowedIP.Equal(tcpAddr.IP) {
-			return nil
-		}
-	} else {
-		_, ipNet, err := net.ParseCIDR(sourceAddr)
-		if err != nil {
-			return fmt.Errorf("ssh: error parsing source-address restriction %q: %v", sourceAddr, err)
-		}
+	for _, sourceAddr := range strings.Split(sourceAddrs, ",") {
+		if allowedIP := net.ParseIP(sourceAddr); allowedIP != nil {
+			if allowedIP.Equal(tcpAddr.IP) {
+				return nil
+			}
+		} else {
+			_, ipNet, err := net.ParseCIDR(sourceAddr)
+			if err != nil {
+				return fmt.Errorf("ssh: error parsing source-address restriction %q: %v", sourceAddr, err)
+			}
 
-		if ipNet.Contains(tcpAddr.IP) {
-			return nil
+			if ipNet.Contains(tcpAddr.IP) {
+				return nil
+			}
 		}
 	}
 
@@ -260,7 +263,7 @@ func checkSourceAddress(addr net.Addr, sourceAddr string) error {
 }
 
 func (s *connection) serverAuthenticate(config *ServerConfig) (*Permissions, error) {
-	var err error
+	sessionID := s.transport.getSessionID()
 	var cache pubKeyCache
 	var perms *Permissions
 
@@ -385,7 +388,7 @@ userAuthLoop:
 				if !isAcceptableAlgo(sig.Format) {
 					break
 				}
-				signedData := buildDataSignedForAuth(s.transport.getSessionID(), userAuthReq, algoBytes, pubKeyData)
+				signedData := buildDataSignedForAuth(sessionID, userAuthReq, algoBytes, pubKeyData)
 
 				if err := pubKey.Verify(signedData, sig); err != nil {
 					return nil, err
@@ -421,12 +424,12 @@ userAuthLoop:
 			return nil, errors.New("ssh: no authentication methods configured but NoClientAuth is also false")
 		}
 
-		if err = s.transport.writePacket(Marshal(&failureMsg)); err != nil {
+		if err := s.transport.writePacket(Marshal(&failureMsg)); err != nil {
 			return nil, err
 		}
 	}
 
-	if err = s.transport.writePacket([]byte{msgUserAuthSuccess}); err != nil {
+	if err := s.transport.writePacket([]byte{msgUserAuthSuccess}); err != nil {
 		return nil, err
 	}
 	return perms, nil
diff --git a/vendor/golang.org/x/crypto/ssh/transport.go b/vendor/golang.org/x/crypto/ssh/transport.go
index 62fba62..f9780e0 100644
--- a/vendor/golang.org/x/crypto/ssh/transport.go
+++ b/vendor/golang.org/x/crypto/ssh/transport.go
@@ -8,8 +8,13 @@ import (
 	"bufio"
 	"errors"
 	"io"
+	"log"
 )
 
+// debugTransport if set, will print packet types as they go over the
+// wire. No message decoding is done, to minimize the impact on timing.
+const debugTransport = false
+
 const (
 	gcmCipherID    = "aes128-gcm@openssh.com"
 	aes128cbcID    = "aes128-cbc"
@@ -22,7 +27,9 @@ type packetConn interface {
 	// Encrypt and send a packet of data to the remote peer.
 	writePacket(packet []byte) error
 
-	// Read a packet from the connection
+	// Read a packet from the connection. The read is blocking,
+	// i.e. if error is nil, then the returned byte slice is
+	// always non-empty.
 	readPacket() ([]byte, error)
 
 	// Close closes the write-side of the connection.
@@ -38,7 +45,7 @@ type transport struct {
 	bufReader *bufio.Reader
 	bufWriter *bufio.Writer
 	rand      io.Reader
-
+	isClient  bool
 	io.Closer
 }
 
@@ -84,9 +91,38 @@ func (t *transport) prepareKeyChange(algs *algorithms, kexResult *kexResult) err
 	return nil
 }
 
+func (t *transport) printPacket(p []byte, write bool) {
+	if len(p) == 0 {
+		return
+	}
+	who := "server"
+	if t.isClient {
+		who = "client"
+	}
+	what := "read"
+	if write {
+		what = "write"
+	}
+
+	log.Println(what, who, p[0])
+}
+
 // Read and decrypt next packet.
-func (t *transport) readPacket() ([]byte, error) {
-	return t.reader.readPacket(t.bufReader)
+func (t *transport) readPacket() (p []byte, err error) {
+	for {
+		p, err = t.reader.readPacket(t.bufReader)
+		if err != nil {
+			break
+		}
+		if len(p) == 0 || (p[0] != msgIgnore && p[0] != msgDebug) {
+			break
+		}
+	}
+	if debugTransport {
+		t.printPacket(p, false)
+	}
+
+	return p, err
 }
 
 func (s *connectionState) readPacket(r *bufio.Reader) ([]byte, error) {
@@ -129,6 +165,9 @@ func (s *connectionState) readPacket(r *bufio.Reader) ([]byte, error) {
 }
 
 func (t *transport) writePacket(packet []byte) error {
+	if debugTransport {
+		t.printPacket(packet, true)
+	}
 	return t.writer.writePacket(t.bufWriter, t.rand, packet)
 }
 
@@ -169,6 +208,8 @@ func newTransport(rwc io.ReadWriteCloser, rand io.Reader, isClient bool) *transp
 		},
 		Closer: rwc,
 	}
+	t.isClient = isClient
+
 	if isClient {
 		t.reader.dir = serverKeys
 		t.writer.dir = clientKeys
@@ -226,6 +267,7 @@ func newPacketCipher(d direction, algs directionAlgorithms, kex *kexResult) (pac
 
 	c := &streamPacketCipher{
 		mac: macModes[algs.MAC].new(macKey),
+		etm: macModes[algs.MAC].etm,
 	}
 	c.macResult = make([]byte, c.mac.Size())
 
diff --git a/vendor/golang.org/x/net/context/context.go b/vendor/golang.org/x/net/context/context.go
index 134654c..f143ed6 100644
--- a/vendor/golang.org/x/net/context/context.go
+++ b/vendor/golang.org/x/net/context/context.go
@@ -7,7 +7,7 @@
 // and between processes.
 //
 // Incoming requests to a server should create a Context, and outgoing calls to
-// servers should accept a Context.  The chain of function calls between must
+// servers should accept a Context. The chain of function calls between must
 // propagate the Context, optionally replacing it with a modified copy created
 // using WithDeadline, WithTimeout, WithCancel, or WithValue.
 //
@@ -16,14 +16,14 @@
 // propagation:
 //
 // Do not store Contexts inside a struct type; instead, pass a Context
-// explicitly to each function that needs it.  The Context should be the first
+// explicitly to each function that needs it. The Context should be the first
 // parameter, typically named ctx:
 //
 // 	func DoSomething(ctx context.Context, arg Arg) error {
 // 		// ... use ctx ...
 // 	}
 //
-// Do not pass a nil Context, even if a function permits it.  Pass context.TODO
+// Do not pass a nil Context, even if a function permits it. Pass context.TODO
 // if you are unsure about which Context to use.
 //
 // Use context Values only for request-scoped data that transits processes and
@@ -44,13 +44,13 @@ import "time"
 // Context's methods may be called by multiple goroutines simultaneously.
 type Context interface {
 	// Deadline returns the time when work done on behalf of this context
-	// should be canceled.  Deadline returns ok==false when no deadline is
-	// set.  Successive calls to Deadline return the same results.
+	// should be canceled. Deadline returns ok==false when no deadline is
+	// set. Successive calls to Deadline return the same results.
 	Deadline() (deadline time.Time, ok bool)
 
 	// Done returns a channel that's closed when work done on behalf of this
-	// context should be canceled.  Done may return nil if this context can
-	// never be canceled.  Successive calls to Done return the same value.
+	// context should be canceled. Done may return nil if this context can
+	// never be canceled. Successive calls to Done return the same value.
 	//
 	// WithCancel arranges for Done to be closed when cancel is called;
 	// WithDeadline arranges for Done to be closed when the deadline
@@ -79,24 +79,24 @@ type Context interface {
 	// a Done channel for cancelation.
 	Done() <-chan struct{}
 
-	// Err returns a non-nil error value after Done is closed.  Err returns
+	// Err returns a non-nil error value after Done is closed. Err returns
 	// Canceled if the context was canceled or DeadlineExceeded if the
-	// context's deadline passed.  No other values for Err are defined.
+	// context's deadline passed. No other values for Err are defined.
 	// After Done is closed, successive calls to Err return the same value.
 	Err() error
 
 	// Value returns the value associated with this context for key, or nil
-	// if no value is associated with key.  Successive calls to Value with
+	// if no value is associated with key. Successive calls to Value with
 	// the same key returns the same result.
 	//
 	// Use context values only for request-scoped data that transits
 	// processes and API boundaries, not for passing optional parameters to
 	// functions.
 	//
-	// A key identifies a specific value in a Context.  Functions that wish
+	// A key identifies a specific value in a Context. Functions that wish
 	// to store values in Context typically allocate a key in a global
 	// variable then use that key as the argument to context.WithValue and
-	// Context.Value.  A key can be any type that supports equality;
+	// Context.Value. A key can be any type that supports equality;
 	// packages should define keys as an unexported type to avoid
 	// collisions.
 	//
@@ -115,7 +115,7 @@ type Context interface {
 	// 	// This prevents collisions with keys defined in other packages.
 	// 	type key int
 	//
-	// 	// userKey is the key for user.User values in Contexts.  It is
+	// 	// userKey is the key for user.User values in Contexts. It is
 	// 	// unexported; clients use user.NewContext and user.FromContext
 	// 	// instead of using this key directly.
 	// 	var userKey key = 0
@@ -134,14 +134,14 @@ type Context interface {
 }
 
 // Background returns a non-nil, empty Context. It is never canceled, has no
-// values, and has no deadline.  It is typically used by the main function,
+// values, and has no deadline. It is typically used by the main function,
 // initialization, and tests, and as the top-level Context for incoming
 // requests.
 func Background() Context {
 	return background
 }
 
-// TODO returns a non-nil, empty Context.  Code should use context.TODO when
+// TODO returns a non-nil, empty Context. Code should use context.TODO when
 // it's unclear which Context to use or it is not yet available (because the
 // surrounding function has not yet been extended to accept a Context
 // parameter).  TODO is recognized by static analysis tools that determine
diff --git a/vendor/golang.org/x/net/context/go17.go b/vendor/golang.org/x/net/context/go17.go
index f8cda19..d20f52b 100644
--- a/vendor/golang.org/x/net/context/go17.go
+++ b/vendor/golang.org/x/net/context/go17.go
@@ -35,8 +35,8 @@ func WithCancel(parent Context) (ctx Context, cancel CancelFunc) {
 }
 
 // WithDeadline returns a copy of the parent context with the deadline adjusted
-// to be no later than d.  If the parent's deadline is already earlier than d,
-// WithDeadline(parent, d) is semantically equivalent to parent.  The returned
+// to be no later than d. If the parent's deadline is already earlier than d,
+// WithDeadline(parent, d) is semantically equivalent to parent. The returned
 // context's Done channel is closed when the deadline expires, when the returned
 // cancel function is called, or when the parent context's Done channel is
 // closed, whichever happens first.
diff --git a/vendor/golang.org/x/net/context/pre_go17.go b/vendor/golang.org/x/net/context/pre_go17.go
index 5a30aca..0f35592 100644
--- a/vendor/golang.org/x/net/context/pre_go17.go
+++ b/vendor/golang.org/x/net/context/pre_go17.go
@@ -13,7 +13,7 @@ import (
 	"time"
 )
 
-// An emptyCtx is never canceled, has no values, and has no deadline.  It is not
+// An emptyCtx is never canceled, has no values, and has no deadline. It is not
 // struct{}, since vars of this type must have distinct addresses.
 type emptyCtx int
 
@@ -104,7 +104,7 @@ func propagateCancel(parent Context, child canceler) {
 }
 
 // parentCancelCtx follows a chain of parent references until it finds a
-// *cancelCtx.  This function understands how each of the concrete types in this
+// *cancelCtx. This function understands how each of the concrete types in this
 // package represents its parent.
 func parentCancelCtx(parent Context) (*cancelCtx, bool) {
 	for {
@@ -134,14 +134,14 @@ func removeChild(parent Context, child canceler) {
 	p.mu.Unlock()
 }
 
-// A canceler is a context type that can be canceled directly.  The
+// A canceler is a context type that can be canceled directly. The
 // implementations are *cancelCtx and *timerCtx.
 type canceler interface {
 	cancel(removeFromParent bool, err error)
 	Done() <-chan struct{}
 }
 
-// A cancelCtx can be canceled.  When canceled, it also cancels any children
+// A cancelCtx can be canceled. When canceled, it also cancels any children
 // that implement canceler.
 type cancelCtx struct {
 	Context
@@ -193,8 +193,8 @@ func (c *cancelCtx) cancel(removeFromParent bool, err error) {
 }
 
 // WithDeadline returns a copy of the parent context with the deadline adjusted
-// to be no later than d.  If the parent's deadline is already earlier than d,
-// WithDeadline(parent, d) is semantically equivalent to parent.  The returned
+// to be no later than d. If the parent's deadline is already earlier than d,
+// WithDeadline(parent, d) is semantically equivalent to parent. The returned
 // context's Done channel is closed when the deadline expires, when the returned
 // cancel function is called, or when the parent context's Done channel is
 // closed, whichever happens first.
@@ -226,8 +226,8 @@ func WithDeadline(parent Context, deadline time.Time) (Context, CancelFunc) {
 	return c, func() { c.cancel(true, Canceled) }
 }
 
-// A timerCtx carries a timer and a deadline.  It embeds a cancelCtx to
-// implement Done and Err.  It implements cancel by stopping its timer then
+// A timerCtx carries a timer and a deadline. It embeds a cancelCtx to
+// implement Done and Err. It implements cancel by stopping its timer then
 // delegating to cancelCtx.cancel.
 type timerCtx struct {
 	*cancelCtx
@@ -281,7 +281,7 @@ func WithValue(parent Context, key interface{}, val interface{}) Context {
 	return &valueCtx{parent, key, val}
 }
 
-// A valueCtx carries a key-value pair.  It implements Value for that key and
+// A valueCtx carries a key-value pair. It implements Value for that key and
 // delegates all other calls to the embedded Context.
 type valueCtx struct {
 	Context
diff --git a/vendor/golang.org/x/net/http2/client_conn_pool.go b/vendor/golang.org/x/net/http2/client_conn_pool.go
index b139412..bdf5652 100644
--- a/vendor/golang.org/x/net/http2/client_conn_pool.go
+++ b/vendor/golang.org/x/net/http2/client_conn_pool.go
@@ -247,7 +247,7 @@ func filterOutClientConn(in []*ClientConn, exclude *ClientConn) []*ClientConn {
 }
 
 // noDialClientConnPool is an implementation of http2.ClientConnPool
-// which never dials.  We let the HTTP/1.1 client dial and use its TLS
+// which never dials. We let the HTTP/1.1 client dial and use its TLS
 // connection instead.
 type noDialClientConnPool struct{ *clientConnPool }
 
diff --git a/vendor/golang.org/x/net/http2/frame.go b/vendor/golang.org/x/net/http2/frame.go
index 358833f..9573588 100644
--- a/vendor/golang.org/x/net/http2/frame.go
+++ b/vendor/golang.org/x/net/http2/frame.go
@@ -312,7 +312,7 @@ type Framer struct {
 	MaxHeaderListSize uint32
 
 	// TODO: track which type of frame & with which flags was sent
-	// last.  Then return an error (unless AllowIllegalWrites) if
+	// last. Then return an error (unless AllowIllegalWrites) if
 	// we're in the middle of a header block and a
 	// non-Continuation or Continuation on a different stream is
 	// attempted to be written.
@@ -600,6 +600,7 @@ var (
 	errStreamID    = errors.New("invalid stream ID")
 	errDepStreamID = errors.New("invalid dependent stream ID")
 	errPadLength   = errors.New("pad length too large")
+	errPadBytes    = errors.New("padding bytes must all be zeros unless AllowIllegalWrites is enabled")
 )
 
 func validStreamIDOrZero(streamID uint32) bool {
@@ -623,6 +624,7 @@ func (f *Framer) WriteData(streamID uint32, endStream bool, data []byte) error {
 //
 // If pad is nil, the padding bit is not sent.
 // The length of pad must not exceed 255 bytes.
+// The bytes of pad must all be zero, unless f.AllowIllegalWrites is set.
 //
 // It will perform exactly one Write to the underlying Writer.
 // It is the caller's responsibility not to violate the maximum frame size
@@ -631,8 +633,18 @@ func (f *Framer) WriteDataPadded(streamID uint32, endStream bool, data, pad []by
 	if !validStreamID(streamID) && !f.AllowIllegalWrites {
 		return errStreamID
 	}
-	if len(pad) > 255 {
-		return errPadLength
+	if len(pad) > 0 {
+		if len(pad) > 255 {
+			return errPadLength
+		}
+		if !f.AllowIllegalWrites {
+			for _, b := range pad {
+				if b != 0 {
+					// "Padding octets MUST be set to zero when sending."
+					return errPadBytes
+				}
+			}
+		}
 	}
 	var flags Flags
 	if endStream {
@@ -663,7 +675,7 @@ type SettingsFrame struct {
 func parseSettingsFrame(fh FrameHeader, p []byte) (Frame, error) {
 	if fh.Flags.Has(FlagSettingsAck) && fh.Length > 0 {
 		// When this (ACK 0x1) bit is set, the payload of the
-		// SETTINGS frame MUST be empty.  Receipt of a
+		// SETTINGS frame MUST be empty. Receipt of a
 		// SETTINGS frame with the ACK flag set and a length
 		// field value other than 0 MUST be treated as a
 		// connection error (Section 5.4.1) of type
@@ -672,7 +684,7 @@ func parseSettingsFrame(fh FrameHeader, p []byte) (Frame, error) {
 	}
 	if fh.StreamID != 0 {
 		// SETTINGS frames always apply to a connection,
-		// never a single stream.  The stream identifier for a
+		// never a single stream. The stream identifier for a
 		// SETTINGS frame MUST be zero (0x0).  If an endpoint
 		// receives a SETTINGS frame whose stream identifier
 		// field is anything other than 0x0, the endpoint MUST
@@ -923,7 +935,7 @@ func parseHeadersFrame(fh FrameHeader, p []byte) (_ Frame, err error) {
 		FrameHeader: fh,
 	}
 	if fh.StreamID == 0 {
-		// HEADERS frames MUST be associated with a stream.  If a HEADERS frame
+		// HEADERS frames MUST be associated with a stream. If a HEADERS frame
 		// is received whose stream identifier field is 0x0, the recipient MUST
 		// respond with a connection error (Section 5.4.1) of type
 		// PROTOCOL_ERROR.
@@ -1045,7 +1057,7 @@ type PriorityParam struct {
 	Exclusive bool
 
 	// Weight is the stream's zero-indexed weight. It should be
-	// set together with StreamDep, or neither should be set.  Per
+	// set together with StreamDep, or neither should be set. Per
 	// the spec, "Add one to the value to obtain a weight between
 	// 1 and 256."
 	Weight uint8
diff --git a/vendor/golang.org/x/net/http2/hpack/encode.go b/vendor/golang.org/x/net/http2/hpack/encode.go
index f9bb033..6b3b9f8 100644
--- a/vendor/golang.org/x/net/http2/hpack/encode.go
+++ b/vendor/golang.org/x/net/http2/hpack/encode.go
@@ -45,7 +45,7 @@ func NewEncoder(w io.Writer) *Encoder {
 
 // WriteField encodes f into a single Write to e's underlying Writer.
 // This function may also produce bytes for "Header Table Size Update"
-// if necessary.  If produced, it is done before encoding f.
+// if necessary. If produced, it is done before encoding f.
 func (e *Encoder) WriteField(f HeaderField) error {
 	e.buf = e.buf[:0]
 
diff --git a/vendor/golang.org/x/net/http2/hpack/hpack.go b/vendor/golang.org/x/net/http2/hpack/hpack.go
index 135b9f6..007bc7f 100644
--- a/vendor/golang.org/x/net/http2/hpack/hpack.go
+++ b/vendor/golang.org/x/net/http2/hpack/hpack.go
@@ -61,7 +61,7 @@ func (hf HeaderField) String() string {
 func (hf HeaderField) Size() uint32 {
 	// http://http2.github.io/http2-spec/compression.html#rfc.section.4.1
 	// "The size of the dynamic table is the sum of the size of
-	// its entries.  The size of an entry is the sum of its name's
+	// its entries. The size of an entry is the sum of its name's
 	// length in octets (as defined in Section 5.2), its value's
 	// length in octets (see Section 5.2), plus 32.  The size of
 	// an entry is calculated using the length of the name and
@@ -307,7 +307,7 @@ func (d *Decoder) Write(p []byte) (n int, err error) {
 		err = d.parseHeaderFieldRepr()
 		if err == errNeedMore {
 			// Extra paranoia, making sure saveBuf won't
-			// get too large.  All the varint and string
+			// get too large. All the varint and string
 			// reading code earlier should already catch
 			// overlong things and return ErrStringLength,
 			// but keep this as a last resort.
diff --git a/vendor/golang.org/x/net/http2/pipe.go b/vendor/golang.org/x/net/http2/pipe.go
index 53b7a1d..914aaf8 100644
--- a/vendor/golang.org/x/net/http2/pipe.go
+++ b/vendor/golang.org/x/net/http2/pipe.go
@@ -10,7 +10,7 @@ import (
 	"sync"
 )
 
-// pipe is a goroutine-safe io.Reader/io.Writer pair.  It's like
+// pipe is a goroutine-safe io.Reader/io.Writer pair. It's like
 // io.Pipe except there are no PipeReader/PipeWriter halves, and the
 // underlying buffer is an interface. (io.Pipe is always unbuffered)
 type pipe struct {
diff --git a/vendor/golang.org/x/net/http2/server.go b/vendor/golang.org/x/net/http2/server.go
index 0431ab0..3c641a8 100644
--- a/vendor/golang.org/x/net/http2/server.go
+++ b/vendor/golang.org/x/net/http2/server.go
@@ -278,6 +278,16 @@ func (s *Server) ServeConn(c net.Conn, opts *ServeConnOpts) {
 		pushEnabled:       true,
 	}
 
+	// The net/http package sets the write deadline from the
+	// http.Server.WriteTimeout during the TLS handshake, but then
+	// passes the connection off to us with the deadline already
+	// set. Disarm it here so that it is not applied to additional
+	// streams opened on this connection.
+	// TODO: implement WriteTimeout fully. See Issue 18437.
+	if sc.hs.WriteTimeout != 0 {
+		sc.conn.SetWriteDeadline(time.Time{})
+	}
+
 	if s.NewWriteScheduler != nil {
 		sc.writeSched = s.NewWriteScheduler()
 	} else {
@@ -700,7 +710,7 @@ func (sc *serverConn) serve() {
 		return
 	}
 	// Now that we've got the preface, get us out of the
-	// "StateNew" state.  We can't go directly to idle, though.
+	// "StateNew" state. We can't go directly to idle, though.
 	// Active means we read some data and anticipate a request. We'll
 	// do another Active when we get a HEADERS frame.
 	sc.setConnState(http.StateActive)
@@ -2093,8 +2103,8 @@ func (b *requestBody) Read(p []byte) (n int, err error) {
 	return
 }
 
-// responseWriter is the http.ResponseWriter implementation.  It's
-// intentionally small (1 pointer wide) to minimize garbage.  The
+// responseWriter is the http.ResponseWriter implementation. It's
+// intentionally small (1 pointer wide) to minimize garbage. The
 // responseWriterState pointer inside is zeroed at the end of a
 // request (in handlerDone) and calls on the responseWriter thereafter
 // simply crash (caller's mistake), but the much larger responseWriterState
@@ -2268,7 +2278,7 @@ const TrailerPrefix = "Trailer:"
 // says you SHOULD (but not must) predeclare any trailers in the
 // header, the official ResponseWriter rules said trailers in Go must
 // be predeclared, and then we reuse the same ResponseWriter.Header()
-// map to mean both Headers and Trailers.  When it's time to write the
+// map to mean both Headers and Trailers. When it's time to write the
 // Trailers, we pick out the fields of Headers that were declared as
 // trailers. That worked for a while, until we found the first major
 // user of Trailers in the wild: gRPC (using them only over http2),
diff --git a/vendor/golang.org/x/net/http2/transport.go b/vendor/golang.org/x/net/http2/transport.go
index 9f60c29..fef8396 100644
--- a/vendor/golang.org/x/net/http2/transport.go
+++ b/vendor/golang.org/x/net/http2/transport.go
@@ -575,7 +575,7 @@ func (cc *ClientConn) canTakeNewRequestLocked() bool {
 		cc.nextStreamID < math.MaxInt32
 }
 
-// onIdleTimeout is called from a time.AfterFunc goroutine.  It will
+// onIdleTimeout is called from a time.AfterFunc goroutine. It will
 // only be called when we're idle, but because we're coming from a new
 // goroutine, there could be a new request coming in at the same time,
 // so this simply calls the synchronized closeIfIdle to shut down this
@@ -658,8 +658,6 @@ func commaSeparatedTrailers(req *http.Request) (string, error) {
 	}
 	if len(keys) > 0 {
 		sort.Strings(keys)
-		// TODO: could do better allocation-wise here, but trailers are rare,
-		// so being lazy for now.
 		return strings.Join(keys, ","), nil
 	}
 	return "", nil
@@ -811,8 +809,8 @@ func (cc *ClientConn) RoundTrip(req *http.Request) (*http.Response, error) {
 			// 2xx, however, then assume the server DOES potentially
 			// want our body (e.g. full-duplex streaming:
 			// golang.org/issue/13444). If it turns out the server
-			// doesn't, they'll RST_STREAM us soon enough.  This is a
-			// heuristic to avoid adding knobs to Transport.  Hopefully
+			// doesn't, they'll RST_STREAM us soon enough. This is a
+			// heuristic to avoid adding knobs to Transport. Hopefully
 			// we can keep it.
 			bodyWriter.cancel()
 			cs.abortRequestBodyWrite(errStopReqBodyWrite)
diff --git a/vendor/golang.org/x/net/internal/timeseries/timeseries.go b/vendor/golang.org/x/net/internal/timeseries/timeseries.go
index 1119f34..685f0e7 100644
--- a/vendor/golang.org/x/net/internal/timeseries/timeseries.go
+++ b/vendor/golang.org/x/net/internal/timeseries/timeseries.go
@@ -371,7 +371,7 @@ func (ts *timeSeries) ComputeRange(start, finish time.Time, num int) []Observabl
 		}
 	}
 
-	// Failed to find a level that covers the desired range.  So just
+	// Failed to find a level that covers the desired range. So just
 	// extract from the last level, even if it doesn't cover the entire
 	// desired range.
 	ts.extract(ts.levels[len(ts.levels)-1], start, finish, num, results)
diff --git a/vendor/golang.org/x/net/trace/events.go b/vendor/golang.org/x/net/trace/events.go
index e66c7e3..d8daec1 100644
--- a/vendor/golang.org/x/net/trace/events.go
+++ b/vendor/golang.org/x/net/trace/events.go
@@ -21,11 +21,6 @@ import (
 	"time"
 )
 
-var eventsTmpl = template.Must(template.New("events").Funcs(template.FuncMap{
-	"elapsed":   elapsed,
-	"trimSpace": strings.TrimSpace,
-}).Parse(eventsHTML))
-
 const maxEventsPerLog = 100
 
 type bucket struct {
@@ -101,7 +96,7 @@ func RenderEvents(w http.ResponseWriter, req *http.Request, sensitive bool) {
 
 	famMu.RLock()
 	defer famMu.RUnlock()
-	if err := eventsTmpl.Execute(w, data); err != nil {
+	if err := eventsTmpl().Execute(w, data); err != nil {
 		log.Printf("net/trace: Failed executing template: %v", err)
 	}
 }
@@ -421,6 +416,19 @@ func freeEventLog(el *eventLog) {
 	}
 }
 
+var eventsTmplCache *template.Template
+var eventsTmplOnce sync.Once
+
+func eventsTmpl() *template.Template {
+	eventsTmplOnce.Do(func() {
+		eventsTmplCache = template.Must(template.New("events").Funcs(template.FuncMap{
+			"elapsed":   elapsed,
+			"trimSpace": strings.TrimSpace,
+		}).Parse(eventsHTML))
+	})
+	return eventsTmplCache
+}
+
 const eventsHTML = `
 <html>
 	<head>
diff --git a/vendor/golang.org/x/net/trace/histogram.go b/vendor/golang.org/x/net/trace/histogram.go
index bb42aa5..9bf4286 100644
--- a/vendor/golang.org/x/net/trace/histogram.go
+++ b/vendor/golang.org/x/net/trace/histogram.go
@@ -12,6 +12,7 @@ import (
 	"html/template"
 	"log"
 	"math"
+	"sync"
 
 	"golang.org/x/net/internal/timeseries"
 )
@@ -320,15 +321,20 @@ func (h *histogram) newData() *data {
 
 func (h *histogram) html() template.HTML {
 	buf := new(bytes.Buffer)
-	if err := distTmpl.Execute(buf, h.newData()); err != nil {
+	if err := distTmpl().Execute(buf, h.newData()); err != nil {
 		buf.Reset()
 		log.Printf("net/trace: couldn't execute template: %v", err)
 	}
 	return template.HTML(buf.String())
 }
 
-// Input: data
-var distTmpl = template.Must(template.New("distTmpl").Parse(`
+var distTmplCache *template.Template
+var distTmplOnce sync.Once
+
+func distTmpl() *template.Template {
+	distTmplOnce.Do(func() {
+		// Input: data
+		distTmplCache = template.Must(template.New("distTmpl").Parse(`
 <table>
 <tr>
     <td style="padding:0.25em">Count: {{.Count}}</td>
@@ -354,3 +360,6 @@ var distTmpl = template.Must(template.New("distTmpl").Parse(`
 {{end}}
 </table>
 `))
+	})
+	return distTmplCache
+}
diff --git a/vendor/golang.org/x/net/trace/trace.go b/vendor/golang.org/x/net/trace/trace.go
index ecd766e..64f56a3 100644
--- a/vendor/golang.org/x/net/trace/trace.go
+++ b/vendor/golang.org/x/net/trace/trace.go
@@ -238,7 +238,7 @@ func Render(w io.Writer, req *http.Request, sensitive bool) {
 
 	completedMu.RLock()
 	defer completedMu.RUnlock()
-	if err := pageTmpl.ExecuteTemplate(w, "Page", data); err != nil {
+	if err := pageTmpl().ExecuteTemplate(w, "Page", data); err != nil {
 		log.Printf("net/trace: Failed executing template: %v", err)
 	}
 }
@@ -902,10 +902,18 @@ func elapsed(d time.Duration) string {
 	return string(b)
 }
 
-var pageTmpl = template.Must(template.New("Page").Funcs(template.FuncMap{
-	"elapsed": elapsed,
-	"add":     func(a, b int) int { return a + b },
-}).Parse(pageHTML))
+var pageTmplCache *template.Template
+var pageTmplOnce sync.Once
+
+func pageTmpl() *template.Template {
+	pageTmplOnce.Do(func() {
+		pageTmplCache = template.Must(template.New("Page").Funcs(template.FuncMap{
+			"elapsed": elapsed,
+			"add":     func(a, b int) int { return a + b },
+		}).Parse(pageHTML))
+	})
+	return pageTmplCache
+}
 
 const pageHTML = `
 {{template "Prolog" .}}
diff --git a/vendor/golang.org/x/oauth2/client_appengine.go b/vendor/golang.org/x/oauth2/client_appengine.go
deleted file mode 100644
index 8962c49..0000000
--- a/vendor/golang.org/x/oauth2/client_appengine.go
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build appengine
-
-// App Engine hooks.
-
-package oauth2
-
-import (
-	"net/http"
-
-	"golang.org/x/net/context"
-	"golang.org/x/oauth2/internal"
-	"google.golang.org/appengine/urlfetch"
-)
-
-func init() {
-	internal.RegisterContextClientFunc(contextClientAppEngine)
-}
-
-func contextClientAppEngine(ctx context.Context) (*http.Client, error) {
-	return urlfetch.Client(ctx), nil
-}
diff --git a/vendor/golang.org/x/oauth2/google/appengine_hook.go b/vendor/golang.org/x/oauth2/google/appengine_hook.go
deleted file mode 100644
index 6f66411..0000000
--- a/vendor/golang.org/x/oauth2/google/appengine_hook.go
+++ /dev/null
@@ -1,14 +0,0 @@
-// Copyright 2015 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build appengine
-
-package google
-
-import "google.golang.org/appengine"
-
-func init() {
-	appengineTokenFunc = appengine.AccessToken
-	appengineAppIDFunc = appengine.AppID
-}
diff --git a/vendor/golang.org/x/oauth2/internal/token.go b/vendor/golang.org/x/oauth2/internal/token.go
index 1c0ec76..ba90a34 100644
--- a/vendor/golang.org/x/oauth2/internal/token.go
+++ b/vendor/golang.org/x/oauth2/internal/token.go
@@ -91,6 +91,7 @@ func (e *expirationTime) UnmarshalJSON(b []byte) error {
 
 var brokenAuthHeaderProviders = []string{
 	"https://accounts.google.com/",
+	"https://api.codeswholesale.com/oauth/token",
 	"https://api.dropbox.com/",
 	"https://api.dropboxapi.com/",
 	"https://api.instagram.com/",
@@ -101,6 +102,7 @@ var brokenAuthHeaderProviders = []string{
 	"https://api.twitch.tv/",
 	"https://app.box.com/",
 	"https://connect.stripe.com/",
+	"https://graph.facebook.com", // see https://github.com/golang/oauth2/issues/214
 	"https://login.microsoftonline.com/",
 	"https://login.salesforce.com/",
 	"https://oauth.sandbox.trainingpeaks.com/",
@@ -118,7 +120,6 @@ var brokenAuthHeaderProviders = []string{
 	"https://www.wunderlist.com/oauth/",
 	"https://api.patreon.com/",
 	"https://sandbox.codeswholesale.com/oauth/token",
-	"https://api.codeswholesale.com/oauth/token",
 }
 
 func RegisterBrokenAuthHeaderProvider(tokenURL string) {
@@ -153,9 +154,9 @@ func RetrieveToken(ctx context.Context, clientID, clientSecret, tokenURL string,
 	if err != nil {
 		return nil, err
 	}
-	v.Set("client_id", clientID)
 	bustedAuth := !providerAuthHeaderWorks(tokenURL)
 	if bustedAuth && clientSecret != "" {
+		v.Set("client_id", clientID)
 		v.Set("client_secret", clientSecret)
 	}
 	req, err := http.NewRequest("POST", tokenURL, strings.NewReader(v.Encode()))
diff --git a/vendor/golang.org/x/oauth2/oauth2.go b/vendor/golang.org/x/oauth2/oauth2.go
index 7b06bfe..3e4835d 100644
--- a/vendor/golang.org/x/oauth2/oauth2.go
+++ b/vendor/golang.org/x/oauth2/oauth2.go
@@ -180,7 +180,6 @@ func (c *Config) Exchange(ctx context.Context, code string) (*Token, error) {
 		"grant_type":   {"authorization_code"},
 		"code":         {code},
 		"redirect_uri": internal.CondVal(c.RedirectURL),
-		"scope":        internal.CondVal(strings.Join(c.Scopes, " ")),
 	})
 }
 
diff --git a/vendor/golang.org/x/sys/unix/mkall.sh b/vendor/golang.org/x/sys/unix/mkall.sh
index 2a1473f..c1fc2ad 100755
--- a/vendor/golang.org/x/sys/unix/mkall.sh
+++ b/vendor/golang.org/x/sys/unix/mkall.sh
@@ -89,6 +89,8 @@ case "$1" in
 -syscalls)
 	for i in zsyscall*go
 	do
+		# Run the command line that appears in the first line
+		# of the generated file to regenerate it.
 		sed 1q $i | sed 's;^// ;;' | sh > _$i && gofmt < _$i > $i
 		rm _$i
 	done
@@ -280,7 +282,7 @@ esac
 			syscall_goos="syscall_bsd.go $syscall_goos"
 			;;
 		esac
-		if [ -n "$mksyscall" ]; then echo "$mksyscall $syscall_goos $GOOSARCH_in |gofmt >zsyscall_$GOOSARCH.go"; fi
+		if [ -n "$mksyscall" ]; then echo "$mksyscall -tags $GOOS,$GOARCH $syscall_goos $GOOSARCH_in |gofmt >zsyscall_$GOOSARCH.go"; fi
 		;;
 	esac
 	if [ -n "$mksysctl" ]; then echo "$mksysctl |gofmt >$zsysctl"; fi
diff --git a/vendor/golang.org/x/sys/unix/mksyscall.pl b/vendor/golang.org/x/sys/unix/mksyscall.pl
index b1e7766..34f8ef8 100755
--- a/vendor/golang.org/x/sys/unix/mksyscall.pl
+++ b/vendor/golang.org/x/sys/unix/mksyscall.pl
@@ -29,6 +29,7 @@ my $openbsd = 0;
 my $netbsd = 0;
 my $dragonfly = 0;
 my $arm = 0; # 64-bit value should use (even, odd)-pair
+my $tags = "";  # build tags
 
 if($ARGV[0] eq "-b32") {
 	$_32bit = "big-endian";
@@ -57,14 +58,14 @@ if($ARGV[0] eq "-arm") {
 	$arm = 1;
 	shift;
 }
-
-if($ARGV[0] =~ /^-/) {
-	print STDERR "usage: mksyscall.pl [-b32 | -l32] [file ...]\n";
-	exit 1;
+if($ARGV[0] eq "-tags") {
+	shift;
+	$tags = $ARGV[0];
+	shift;
 }
 
-if($ENV{'GOARCH'} eq "" || $ENV{'GOOS'} eq "") {
-	print STDERR "GOARCH or GOOS not defined in environment\n";
+if($ARGV[0] =~ /^-/) {
+	print STDERR "usage: mksyscall.pl [-b32 | -l32] [-tags x,y] [file ...]\n";
 	exit 1;
 }
 
@@ -132,7 +133,6 @@ while(<>) {
 
 	# Prepare arguments to Syscall.
 	my @args = ();
-	my @uses = ();
 	my $n = 0;
 	foreach my $p (@in) {
 		my ($name, $type) = parseparam($p);
@@ -143,14 +143,12 @@ while(<>) {
 			$text .= "\t_p$n, $errvar = BytePtrFromString($name)\n";
 			$text .= "\tif $errvar != nil {\n\t\treturn\n\t}\n";
 			push @args, "uintptr(unsafe.Pointer(_p$n))";
-			push @uses, "use(unsafe.Pointer(_p$n))";
 			$n++;
 		} elsif($type eq "string") {
 			print STDERR "$ARGV:$.: $func uses string arguments, but has no error return\n";
 			$text .= "\tvar _p$n *byte\n";
 			$text .= "\t_p$n, _ = BytePtrFromString($name)\n";
 			push @args, "uintptr(unsafe.Pointer(_p$n))";
-			push @uses, "use(unsafe.Pointer(_p$n))";
 			$n++;
 		} elsif($type =~ /^\[\](.*)/) {
 			# Convert slice into pointer, length.
@@ -185,7 +183,7 @@ while(<>) {
 			}
 		} elsif($type eq "int64" && $_32bit ne "") {
 			if(@args % 2 && $arm) {
-				# arm abi specifies 64-bit argument uses 
+				# arm abi specifies 64-bit argument uses
 				# (even, odd) pair
 				push @args, "0"
 			}
@@ -278,11 +276,8 @@ while(<>) {
 	} else {
 		$text .= "\t$ret[0], $ret[1], $ret[2] := $call\n";
 	}
-	foreach my $use (@uses) {
-		$text .= "\t$use\n";
-	}
 	$text .= $body;
-	
+
 	if ($plan9 && $ret[2] eq "e1") {
 		$text .= "\tif int32(r0) == -1 {\n";
 		$text .= "\t\terr = e1\n";
@@ -307,7 +302,7 @@ print <<EOF;
 // $cmdline
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build $ENV{'GOARCH'},$ENV{'GOOS'}
+// +build $tags
 
 package unix
 
diff --git a/vendor/golang.org/x/sys/unix/mksyscall_solaris.pl b/vendor/golang.org/x/sys/unix/mksyscall_solaris.pl
index 06bade7..939c8a7 100755
--- a/vendor/golang.org/x/sys/unix/mksyscall_solaris.pl
+++ b/vendor/golang.org/x/sys/unix/mksyscall_solaris.pl
@@ -12,7 +12,7 @@
 #	* The parameter lists must give a type for each argument:
 #	  the (x, y, z int) shorthand is not allowed.
 #	* If the return parameter is an error number, it must be named err.
-#	* If go func name needs to be different than its libc name, 
+#	* If go func name needs to be different than its libc name,
 #	* or the function is not in libc, name could be specified
 #	* at the end, after "=" sign, like
 #	  //sys getsockopt(s int, level int, name int, val uintptr, vallen *_Socklen) (err error) = libsocket.getsockopt
@@ -22,6 +22,7 @@ use strict;
 my $cmdline = "mksyscall_solaris.pl " . join(' ', @ARGV);
 my $errors = 0;
 my $_32bit = "";
+my $tags = "";  # build tags
 
 binmode STDOUT;
 
@@ -32,14 +33,14 @@ if($ARGV[0] eq "-b32") {
 	$_32bit = "little-endian";
 	shift;
 }
-
-if($ARGV[0] =~ /^-/) {
-	print STDERR "usage: mksyscall_solaris.pl [-b32 | -l32] [file ...]\n";
-	exit 1;
+if($ARGV[0] eq "-tags") {
+	shift;
+	$tags = $ARGV[0];
+	shift;
 }
 
-if($ENV{'GOARCH'} eq "" || $ENV{'GOOS'} eq "") {
-	print STDERR "GOARCH or GOOS not defined in environment\n";
+if($ARGV[0] =~ /^-/) {
+	print STDERR "usage: mksyscall_solaris.pl [-b32 | -l32] [-tags x,y] [file ...]\n";
 	exit 1;
 }
 
@@ -138,7 +139,6 @@ while(<>) {
 
 	# Prepare arguments to Syscall.
 	my @args = ();
-	my @uses = ();
 	my $n = 0;
 	foreach my $p (@in) {
 		my ($name, $type) = parseparam($p);
@@ -149,14 +149,12 @@ while(<>) {
 			$text .= "\t_p$n, $errvar = $strconvfunc($name)\n";
 			$text .= "\tif $errvar != nil {\n\t\treturn\n\t}\n";
 			push @args, "uintptr(unsafe.Pointer(_p$n))";
-			push @uses, "use(unsafe.Pointer(_p$n))";
 			$n++;
 		} elsif($type eq "string") {
 			print STDERR "$ARGV:$.: $func uses string arguments, but has no error return\n";
 			$text .= "\tvar _p$n $strconvtype\n";
 			$text .= "\t_p$n, _ = $strconvfunc($name)\n";
 			push @args, "uintptr(unsafe.Pointer(_p$n))";
-			push @uses, "use(unsafe.Pointer(_p$n))";
 			$n++;
 		} elsif($type =~ /^\[\](.*)/) {
 			# Convert slice into pointer, length.
@@ -243,9 +241,6 @@ while(<>) {
 	} else {
 		$text .= "\t$ret[0], $ret[1], $ret[2] := $call\n";
 	}
-	foreach my $use (@uses) {
-		$text .= "\t$use\n";
-	}
 	$text .= $body;
 
 	if ($do_errno) {
@@ -265,7 +260,7 @@ print <<EOF;
 // $cmdline
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build $ENV{'GOARCH'},$ENV{'GOOS'}
+// +build $tags
 
 package $package
 
diff --git a/vendor/golang.org/x/sys/unix/syscall.go b/vendor/golang.org/x/sys/unix/syscall.go
index a0bcf84..85e3502 100644
--- a/vendor/golang.org/x/sys/unix/syscall.go
+++ b/vendor/golang.org/x/sys/unix/syscall.go
@@ -21,8 +21,6 @@
 // holds a value of type syscall.Errno.
 package unix // import "golang.org/x/sys/unix"
 
-import "unsafe"
-
 // ByteSliceFromString returns a NUL-terminated slice of bytes
 // containing the text of s. If s contains a NUL byte at any
 // location, it returns (nil, EINVAL).
@@ -69,8 +67,3 @@ func (tv *Timeval) Nano() int64 {
 }
 
 func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
-
-// use is a no-op, but the compiler cannot see that it is.
-// Calling use(p) ensures that p is kept live until that point.
-//go:noescape
-func use(p unsafe.Pointer)
diff --git a/vendor/golang.org/x/sys/unix/syscall_darwin.go b/vendor/golang.org/x/sys/unix/syscall_darwin.go
index 3d534d2..0d1771c 100644
--- a/vendor/golang.org/x/sys/unix/syscall_darwin.go
+++ b/vendor/golang.org/x/sys/unix/syscall_darwin.go
@@ -144,7 +144,6 @@ func getAttrList(path string, attrList attrList, attrBuf []byte, options uint) (
 		uintptr(options),
 		0,
 	)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		return nil, e1
 	}
@@ -197,7 +196,6 @@ func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
 		bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
 	}
 	r0, _, e1 := Syscall(SYS_GETFSSTAT64, uintptr(_p0), bufsize, uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = e1
diff --git a/vendor/golang.org/x/sys/unix/syscall_dragonfly.go b/vendor/golang.org/x/sys/unix/syscall_dragonfly.go
index ec408ee..fbbe0dc 100644
--- a/vendor/golang.org/x/sys/unix/syscall_dragonfly.go
+++ b/vendor/golang.org/x/sys/unix/syscall_dragonfly.go
@@ -109,7 +109,6 @@ func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
 		bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
 	}
 	r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = e1
diff --git a/vendor/golang.org/x/sys/unix/syscall_freebsd.go b/vendor/golang.org/x/sys/unix/syscall_freebsd.go
index 520ccbe..ec56ed6 100644
--- a/vendor/golang.org/x/sys/unix/syscall_freebsd.go
+++ b/vendor/golang.org/x/sys/unix/syscall_freebsd.go
@@ -129,7 +129,6 @@ func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
 		bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
 	}
 	r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = e1
diff --git a/vendor/golang.org/x/sys/unix/syscall_linux_mipsx.go b/vendor/golang.org/x/sys/unix/syscall_linux_mipsx.go
index 5ed8013..be77d24 100644
--- a/vendor/golang.org/x/sys/unix/syscall_linux_mipsx.go
+++ b/vendor/golang.org/x/sys/unix/syscall_linux_mipsx.go
@@ -73,7 +73,6 @@ func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr,
 
 func Fstatfs(fd int, buf *Statfs_t) (err error) {
 	_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
-	use(unsafe.Pointer(buf))
 	if e != 0 {
 		err = errnoErr(e)
 	}
@@ -86,7 +85,6 @@ func Statfs(path string, buf *Statfs_t) (err error) {
 		return err
 	}
 	_, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(p)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
-	use(unsafe.Pointer(p))
 	if e != 0 {
 		err = errnoErr(e)
 	}
diff --git a/vendor/golang.org/x/sys/unix/syscall_linux_s390x.go b/vendor/golang.org/x/sys/unix/syscall_linux_s390x.go
index 81c5f47..1708a4b 100644
--- a/vendor/golang.org/x/sys/unix/syscall_linux_s390x.go
+++ b/vendor/golang.org/x/sys/unix/syscall_linux_s390x.go
@@ -132,7 +132,6 @@ func (cmsg *Cmsghdr) SetLen(length int) {
 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
 	mmap_args := [6]uintptr{addr, length, uintptr(prot), uintptr(flags), uintptr(fd), uintptr(offset)}
 	r0, _, e1 := Syscall(SYS_MMAP, uintptr(unsafe.Pointer(&mmap_args[0])), 0, 0)
-	use(unsafe.Pointer(&mmap_args[0]))
 	xaddr = uintptr(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
diff --git a/vendor/golang.org/x/sys/unix/syscall_openbsd.go b/vendor/golang.org/x/sys/unix/syscall_openbsd.go
index 554a823..246131d 100644
--- a/vendor/golang.org/x/sys/unix/syscall_openbsd.go
+++ b/vendor/golang.org/x/sys/unix/syscall_openbsd.go
@@ -111,7 +111,6 @@ func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
 		bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
 	}
 	r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = e1
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_darwin_386.go b/vendor/golang.org/x/sys/unix/zsyscall_darwin_386.go
index 031034a..e48f4a5 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_darwin_386.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_darwin_386.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -l32 syscall_bsd.go syscall_darwin.go syscall_darwin_386.go
+// mksyscall.pl -l32 -tags darwin,386 syscall_bsd.go syscall_darwin.go syscall_darwin_386.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build 386,darwin
+// +build darwin,386
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -307,7 +305,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -333,7 +330,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -349,7 +345,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -365,7 +360,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -381,7 +375,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -397,7 +390,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -449,8 +441,6 @@ func Exchangedata(path1 string, path2 string, options int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXCHANGEDATA, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(options))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -727,7 +717,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -748,8 +737,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -775,7 +762,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -791,7 +777,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -807,7 +792,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -823,7 +807,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -907,7 +890,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -924,7 +906,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -998,7 +979,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1020,8 +1000,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1037,7 +1015,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1053,7 +1030,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1120,7 +1096,6 @@ func Setlogin(name string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SETLOGIN, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1227,7 +1202,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1243,7 +1217,6 @@ func Statfs(path string, stat *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1264,8 +1237,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1291,7 +1262,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), uintptr(length>>32))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1315,7 +1285,6 @@ func Undelete(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNDELETE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1331,7 +1300,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1347,7 +1315,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_darwin_amd64.go b/vendor/golang.org/x/sys/unix/zsyscall_darwin_amd64.go
index ee96f78..672ada0 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_darwin_amd64.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_darwin_amd64.go
@@ -1,7 +1,7 @@
-// mksyscall.pl syscall_bsd.go syscall_darwin.go syscall_darwin_amd64.go
+// mksyscall.pl -tags darwin,amd64 syscall_bsd.go syscall_darwin.go syscall_darwin_amd64.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build amd64,darwin
+// +build darwin,amd64
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -307,7 +305,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -333,7 +330,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -349,7 +345,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -365,7 +360,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -381,7 +375,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -397,7 +390,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -449,8 +441,6 @@ func Exchangedata(path1 string, path2 string, options int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXCHANGEDATA, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(options))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -727,7 +717,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -748,8 +737,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -775,7 +762,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -791,7 +777,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -807,7 +792,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -823,7 +807,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -907,7 +890,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -924,7 +906,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -998,7 +979,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1020,8 +1000,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1037,7 +1015,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1053,7 +1030,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1120,7 +1096,6 @@ func Setlogin(name string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SETLOGIN, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1227,7 +1202,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1243,7 +1217,6 @@ func Statfs(path string, stat *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1264,8 +1237,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1291,7 +1262,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1315,7 +1285,6 @@ func Undelete(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNDELETE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1331,7 +1300,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1347,7 +1315,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1423,7 +1390,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_darwin_arm.go b/vendor/golang.org/x/sys/unix/zsyscall_darwin_arm.go
index e52cd0d..d516409 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_darwin_arm.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_darwin_arm.go
@@ -1,7 +1,7 @@
-// mksyscall.pl syscall_bsd.go syscall_darwin.go syscall_darwin_arm.go
+// mksyscall.pl -l32 -tags darwin,arm syscall_bsd.go syscall_darwin.go syscall_darwin_arm.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build arm,darwin
+// +build darwin,arm
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -307,7 +305,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -333,7 +330,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -349,7 +345,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -365,7 +360,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -381,7 +375,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -397,7 +390,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -449,8 +441,6 @@ func Exchangedata(path1 string, path2 string, options int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXCHANGEDATA, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(options))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -558,7 +548,7 @@ func Fsync(fd int) (err error) {
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
 func Ftruncate(fd int, length int64) (err error) {
-	_, _, e1 := Syscall(SYS_FTRUNCATE, uintptr(fd), uintptr(length), 0)
+	_, _, e1 := Syscall(SYS_FTRUNCATE, uintptr(fd), uintptr(length), uintptr(length>>32))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -727,7 +717,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -748,8 +737,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -775,7 +762,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -791,7 +777,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -807,7 +792,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -823,7 +807,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -907,7 +890,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -924,7 +906,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -941,7 +922,7 @@ func Pread(fd int, p []byte, offset int64) (n int, err error) {
 	} else {
 		_p0 = unsafe.Pointer(&_zero)
 	}
-	r0, _, e1 := Syscall6(SYS_PREAD, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), 0, 0)
+	r0, _, e1 := Syscall6(SYS_PREAD, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -958,7 +939,7 @@ func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
 	} else {
 		_p0 = unsafe.Pointer(&_zero)
 	}
-	r0, _, e1 := Syscall6(SYS_PWRITE, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), 0, 0)
+	r0, _, e1 := Syscall6(SYS_PWRITE, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -998,7 +979,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1020,8 +1000,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1037,7 +1015,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1053,7 +1030,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1063,8 +1039,8 @@ func Rmdir(path string) (err error) {
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
 func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
-	r0, _, e1 := Syscall(SYS_LSEEK, uintptr(fd), uintptr(offset), uintptr(whence))
-	newoffset = int64(r0)
+	r0, r1, e1 := Syscall6(SYS_LSEEK, uintptr(fd), uintptr(offset), uintptr(offset>>32), uintptr(whence), 0, 0)
+	newoffset = int64(int64(r1)<<32 | int64(r0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1120,7 +1096,6 @@ func Setlogin(name string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SETLOGIN, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1227,7 +1202,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1243,7 +1217,6 @@ func Statfs(path string, stat *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1264,8 +1237,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1290,8 +1261,7 @@ func Truncate(path string, length int64) (err error) {
 	if err != nil {
 		return
 	}
-	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0)
-	use(unsafe.Pointer(_p0))
+	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), uintptr(length>>32))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1315,7 +1285,6 @@ func Undelete(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNDELETE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1331,7 +1300,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1347,7 +1315,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1374,7 +1341,7 @@ func write(fd int, p []byte) (n int, err error) {
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
 func mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) {
-	r0, _, e1 := Syscall6(SYS_MMAP, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flag), uintptr(fd), uintptr(pos))
+	r0, _, e1 := Syscall9(SYS_MMAP, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flag), uintptr(fd), uintptr(pos), uintptr(pos>>32), 0, 0)
 	ret = uintptr(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_darwin_arm64.go b/vendor/golang.org/x/sys/unix/zsyscall_darwin_arm64.go
index 9863ef9..e97759c 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_darwin_arm64.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_darwin_arm64.go
@@ -1,7 +1,7 @@
-// mksyscall.pl syscall_bsd.go syscall_darwin.go syscall_darwin_arm64.go
+// mksyscall.pl -tags darwin,arm64 syscall_bsd.go syscall_darwin.go syscall_darwin_arm64.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build arm64,darwin
+// +build darwin,arm64
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -307,7 +305,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -333,7 +330,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -349,7 +345,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -365,7 +360,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -381,7 +375,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -397,7 +390,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -449,8 +441,6 @@ func Exchangedata(path1 string, path2 string, options int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXCHANGEDATA, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(options))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -727,7 +717,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -748,8 +737,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -775,7 +762,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -791,7 +777,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -807,7 +792,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -823,7 +807,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -907,7 +890,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -924,7 +906,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -998,7 +979,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1020,8 +1000,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1037,7 +1015,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1053,7 +1030,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1120,7 +1096,6 @@ func Setlogin(name string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SETLOGIN, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1227,7 +1202,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1243,7 +1217,6 @@ func Statfs(path string, stat *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1264,8 +1237,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1291,7 +1262,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1315,7 +1285,6 @@ func Undelete(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNDELETE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1331,7 +1300,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1347,7 +1315,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_dragonfly_amd64.go b/vendor/golang.org/x/sys/unix/zsyscall_dragonfly_amd64.go
index 78de48d..3e9d82a 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_dragonfly_amd64.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_dragonfly_amd64.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -dragonfly syscall_bsd.go syscall_dragonfly.go syscall_dragonfly_amd64.go
+// mksyscall.pl -dragonfly -tags dragonfly,amd64 syscall_bsd.go syscall_dragonfly.go syscall_dragonfly_amd64.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build amd64,dragonfly
+// +build dragonfly,amd64
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -321,7 +319,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -347,7 +344,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -363,7 +359,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -379,7 +374,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +389,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -411,7 +404,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -739,7 +731,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -760,8 +751,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -787,7 +776,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -803,7 +791,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -819,7 +806,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -835,7 +821,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -929,7 +914,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -946,7 +930,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -986,7 +969,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1008,8 +990,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1025,7 +1005,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1041,7 +1020,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1108,7 +1086,6 @@ func Setlogin(name string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SETLOGIN, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1225,7 +1202,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1241,7 +1217,6 @@ func Statfs(path string, stat *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1262,8 +1237,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1289,7 +1262,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), 0, uintptr(length))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1313,7 +1285,6 @@ func Undelete(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNDELETE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1329,7 +1300,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1345,7 +1315,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_freebsd_386.go b/vendor/golang.org/x/sys/unix/zsyscall_freebsd_386.go
index fade994..f53801c 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_freebsd_386.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_freebsd_386.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -l32 syscall_bsd.go syscall_freebsd.go syscall_freebsd_386.go
+// mksyscall.pl -l32 -tags freebsd,386 syscall_bsd.go syscall_freebsd.go syscall_freebsd_386.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build 386,freebsd
+// +build freebsd,386
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -287,7 +285,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -313,7 +310,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -329,7 +325,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -345,7 +340,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -361,7 +355,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -377,7 +370,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -431,7 +423,6 @@ func ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbyt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_GET_FD, uintptr(fd), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p0)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -448,7 +439,6 @@ func ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbyt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_SET_FD, uintptr(fd), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p0)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -465,7 +455,6 @@ func ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXTATTR_DELETE_FD, uintptr(fd), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p0)))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -497,8 +486,6 @@ func ExtattrGetFile(file string, attrnamespace int, attrname string, data uintpt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_GET_FILE, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -520,8 +507,6 @@ func ExtattrSetFile(file string, attrnamespace int, attrname string, data uintpt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_SET_FILE, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -543,8 +528,6 @@ func ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err err
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXTATTR_DELETE_FILE, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -560,7 +543,6 @@ func ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_LIST_FILE, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(data), uintptr(nbytes), 0, 0)
-	use(unsafe.Pointer(_p0))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -582,8 +564,6 @@ func ExtattrGetLink(link string, attrnamespace int, attrname string, data uintpt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_GET_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -605,8 +585,6 @@ func ExtattrSetLink(link string, attrnamespace int, attrname string, data uintpt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_SET_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -628,8 +606,6 @@ func ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err err
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXTATTR_DELETE_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -645,7 +621,6 @@ func ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_LIST_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(data), uintptr(nbytes), 0, 0)
-	use(unsafe.Pointer(_p0))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -946,7 +921,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -967,8 +941,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -994,7 +966,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1010,7 +981,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1026,7 +996,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1042,7 +1011,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1136,7 +1104,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1153,7 +1120,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1227,7 +1193,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1249,8 +1214,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1266,7 +1229,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1282,7 +1244,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1349,7 +1310,6 @@ func Setlogin(name string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SETLOGIN, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1466,7 +1426,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1482,7 +1441,6 @@ func Statfs(path string, stat *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1503,8 +1461,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1530,7 +1486,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), uintptr(length>>32))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1554,7 +1509,6 @@ func Undelete(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNDELETE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1570,7 +1524,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1586,7 +1539,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_freebsd_amd64.go b/vendor/golang.org/x/sys/unix/zsyscall_freebsd_amd64.go
index c28281e..55b0741 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_freebsd_amd64.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_freebsd_amd64.go
@@ -1,7 +1,7 @@
-// mksyscall.pl syscall_bsd.go syscall_freebsd.go syscall_freebsd_amd64.go
+// mksyscall.pl -tags freebsd,amd64 syscall_bsd.go syscall_freebsd.go syscall_freebsd_amd64.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build amd64,freebsd
+// +build freebsd,amd64
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -287,7 +285,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -313,7 +310,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -329,7 +325,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -345,7 +340,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -361,7 +355,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -377,7 +370,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -431,7 +423,6 @@ func ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbyt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_GET_FD, uintptr(fd), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p0)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -448,7 +439,6 @@ func ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbyt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_SET_FD, uintptr(fd), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p0)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -465,7 +455,6 @@ func ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXTATTR_DELETE_FD, uintptr(fd), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p0)))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -497,8 +486,6 @@ func ExtattrGetFile(file string, attrnamespace int, attrname string, data uintpt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_GET_FILE, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -520,8 +507,6 @@ func ExtattrSetFile(file string, attrnamespace int, attrname string, data uintpt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_SET_FILE, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -543,8 +528,6 @@ func ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err err
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXTATTR_DELETE_FILE, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -560,7 +543,6 @@ func ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_LIST_FILE, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(data), uintptr(nbytes), 0, 0)
-	use(unsafe.Pointer(_p0))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -582,8 +564,6 @@ func ExtattrGetLink(link string, attrnamespace int, attrname string, data uintpt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_GET_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -605,8 +585,6 @@ func ExtattrSetLink(link string, attrnamespace int, attrname string, data uintpt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_SET_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -628,8 +606,6 @@ func ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err err
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXTATTR_DELETE_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -645,7 +621,6 @@ func ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_LIST_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(data), uintptr(nbytes), 0, 0)
-	use(unsafe.Pointer(_p0))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -946,7 +921,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -967,8 +941,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -994,7 +966,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1010,7 +981,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1026,7 +996,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1042,7 +1011,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1136,7 +1104,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1153,7 +1120,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1227,7 +1193,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1249,8 +1214,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1266,7 +1229,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1282,7 +1244,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1349,7 +1310,6 @@ func Setlogin(name string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SETLOGIN, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1466,7 +1426,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1482,7 +1441,6 @@ func Statfs(path string, stat *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1503,8 +1461,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1530,7 +1486,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1554,7 +1509,6 @@ func Undelete(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNDELETE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1570,7 +1524,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1586,7 +1539,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_freebsd_arm.go b/vendor/golang.org/x/sys/unix/zsyscall_freebsd_arm.go
index a18ba5c..0e9b42b 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_freebsd_arm.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_freebsd_arm.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -l32 -arm syscall_bsd.go syscall_freebsd.go syscall_freebsd_arm.go
+// mksyscall.pl -l32 -arm -tags freebsd,arm syscall_bsd.go syscall_freebsd.go syscall_freebsd_arm.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build arm,freebsd
+// +build freebsd,arm
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -287,7 +285,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -313,7 +310,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -329,7 +325,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -345,7 +340,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -361,7 +355,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -377,7 +370,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -431,7 +423,6 @@ func ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbyt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_GET_FD, uintptr(fd), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p0)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -448,7 +439,6 @@ func ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbyt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_SET_FD, uintptr(fd), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p0)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -465,7 +455,6 @@ func ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXTATTR_DELETE_FD, uintptr(fd), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p0)))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -497,8 +486,6 @@ func ExtattrGetFile(file string, attrnamespace int, attrname string, data uintpt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_GET_FILE, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -520,8 +507,6 @@ func ExtattrSetFile(file string, attrnamespace int, attrname string, data uintpt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_SET_FILE, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -543,8 +528,6 @@ func ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err err
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXTATTR_DELETE_FILE, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -560,7 +543,6 @@ func ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_LIST_FILE, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(data), uintptr(nbytes), 0, 0)
-	use(unsafe.Pointer(_p0))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -582,8 +564,6 @@ func ExtattrGetLink(link string, attrnamespace int, attrname string, data uintpt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_GET_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -605,8 +585,6 @@ func ExtattrSetLink(link string, attrnamespace int, attrname string, data uintpt
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_SET_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)), uintptr(data), uintptr(nbytes), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -628,8 +606,6 @@ func ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err err
 		return
 	}
 	_, _, e1 := Syscall(SYS_EXTATTR_DELETE_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -645,7 +621,6 @@ func ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_EXTATTR_LIST_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(attrnamespace), uintptr(data), uintptr(nbytes), 0, 0)
-	use(unsafe.Pointer(_p0))
 	ret = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -946,7 +921,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -967,8 +941,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -994,7 +966,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1010,7 +981,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1026,7 +996,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1042,7 +1011,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1136,7 +1104,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1153,7 +1120,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1227,7 +1193,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -1249,8 +1214,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1266,7 +1229,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1282,7 +1244,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1349,7 +1310,6 @@ func Setlogin(name string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SETLOGIN, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1466,7 +1426,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1482,7 +1441,6 @@ func Statfs(path string, stat *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1503,8 +1461,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1530,7 +1486,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), 0, uintptr(length), uintptr(length>>32), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1554,7 +1509,6 @@ func Undelete(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNDELETE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1570,7 +1524,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1586,7 +1539,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_linux_386.go b/vendor/golang.org/x/sys/unix/zsyscall_linux_386.go
index fa92387..a01725b 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_linux_386.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_linux_386.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -l32 syscall_linux.go syscall_linux_386.go
+// mksyscall.pl -l32 -tags linux,386 syscall_linux.go syscall_linux_386.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build 386,linux
+// +build linux,386
 
 package unix
 
@@ -26,8 +26,6 @@ func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags in
 		return
 	}
 	_, _, e1 := Syscall6(SYS_LINKAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -43,7 +41,6 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -77,7 +74,6 @@ func Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_READLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -99,8 +95,6 @@ func Symlinkat(oldpath string, newdirfd int, newpath string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINKAT, uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -116,7 +110,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -132,7 +125,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -148,7 +140,6 @@ func utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error
 		return
 	}
 	_, _, e1 := Syscall6(SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -212,7 +203,6 @@ func reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_REBOOT, uintptr(magic1), uintptr(magic2), uintptr(cmd), uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,9 +228,6 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(data)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
-	use(unsafe.Pointer(_p2))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -256,7 +243,6 @@ func Acct(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -283,7 +269,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -299,7 +284,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +379,6 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FACCESSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -441,7 +424,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -457,7 +439,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHOWNAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -609,8 +590,6 @@ func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -627,7 +606,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 		return
 	}
 	r0, _, e1 := Syscall(SYS_INOTIFY_ADD_WATCH, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(mask))
-	use(unsafe.Pointer(_p0))
 	watchdesc = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -699,7 +677,6 @@ func Listxattr(path string, dest []byte) (sz int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
-	use(unsafe.Pointer(_p0))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -716,7 +693,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIRAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -732,7 +708,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MKNODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -763,8 +738,6 @@ func PivotRoot(newroot string, putold string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_PIVOT_ROOT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -822,8 +795,6 @@ func Removexattr(path string, attr string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -844,8 +815,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := Syscall6(SYS_RENAMEAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -955,8 +924,6 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1039,7 +1006,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1351,7 +1317,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN32, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1367,7 +1332,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1499,7 +1463,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1525,7 +1488,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE64, uintptr(unsafe.Pointer(_p0)), uintptr(length), uintptr(length>>32))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1652,7 +1614,6 @@ func Utime(path string, buf *Utimbuf) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_linux_amd64.go b/vendor/golang.org/x/sys/unix/zsyscall_linux_amd64.go
index b34d5c2..1c1b25e 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_linux_amd64.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_linux_amd64.go
@@ -1,7 +1,7 @@
-// mksyscall.pl syscall_linux.go syscall_linux_amd64.go
+// mksyscall.pl -tags linux,amd64 syscall_linux.go syscall_linux_amd64.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build amd64,linux
+// +build linux,amd64
 
 package unix
 
@@ -26,8 +26,6 @@ func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags in
 		return
 	}
 	_, _, e1 := Syscall6(SYS_LINKAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -43,7 +41,6 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -77,7 +74,6 @@ func Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_READLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -99,8 +95,6 @@ func Symlinkat(oldpath string, newdirfd int, newpath string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINKAT, uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -116,7 +110,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -132,7 +125,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -148,7 +140,6 @@ func utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error
 		return
 	}
 	_, _, e1 := Syscall6(SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -212,7 +203,6 @@ func reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_REBOOT, uintptr(magic1), uintptr(magic2), uintptr(cmd), uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,9 +228,6 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(data)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
-	use(unsafe.Pointer(_p2))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -256,7 +243,6 @@ func Acct(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -283,7 +269,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -299,7 +284,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +379,6 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FACCESSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -441,7 +424,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -457,7 +439,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHOWNAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -609,8 +590,6 @@ func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -627,7 +606,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 		return
 	}
 	r0, _, e1 := Syscall(SYS_INOTIFY_ADD_WATCH, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(mask))
-	use(unsafe.Pointer(_p0))
 	watchdesc = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -699,7 +677,6 @@ func Listxattr(path string, dest []byte) (sz int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
-	use(unsafe.Pointer(_p0))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -716,7 +693,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIRAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -732,7 +708,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MKNODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -763,8 +738,6 @@ func PivotRoot(newroot string, putold string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_PIVOT_ROOT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -822,8 +795,6 @@ func Removexattr(path string, attr string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -844,8 +815,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := Syscall6(SYS_RENAMEAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -955,8 +924,6 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1039,7 +1006,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1368,7 +1334,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1394,7 +1359,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1578,7 +1542,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1594,7 +1557,6 @@ func Statfs(path string, buf *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1620,7 +1582,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1826,7 +1787,6 @@ func Utime(path string, buf *Utimbuf) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_linux_arm.go b/vendor/golang.org/x/sys/unix/zsyscall_linux_arm.go
index 2e5cb39..2359fd7 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_linux_arm.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_linux_arm.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -l32 -arm syscall_linux.go syscall_linux_arm.go
+// mksyscall.pl -l32 -arm -tags linux,arm syscall_linux.go syscall_linux_arm.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build arm,linux
+// +build linux,arm
 
 package unix
 
@@ -26,8 +26,6 @@ func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags in
 		return
 	}
 	_, _, e1 := Syscall6(SYS_LINKAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -43,7 +41,6 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -77,7 +74,6 @@ func Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_READLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -99,8 +95,6 @@ func Symlinkat(oldpath string, newdirfd int, newpath string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINKAT, uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -116,7 +110,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -132,7 +125,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -148,7 +140,6 @@ func utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error
 		return
 	}
 	_, _, e1 := Syscall6(SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -212,7 +203,6 @@ func reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_REBOOT, uintptr(magic1), uintptr(magic2), uintptr(cmd), uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,9 +228,6 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(data)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
-	use(unsafe.Pointer(_p2))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -256,7 +243,6 @@ func Acct(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -283,7 +269,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -299,7 +284,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +379,6 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FACCESSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -441,7 +424,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -457,7 +439,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHOWNAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -609,8 +590,6 @@ func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -627,7 +606,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 		return
 	}
 	r0, _, e1 := Syscall(SYS_INOTIFY_ADD_WATCH, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(mask))
-	use(unsafe.Pointer(_p0))
 	watchdesc = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -699,7 +677,6 @@ func Listxattr(path string, dest []byte) (sz int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
-	use(unsafe.Pointer(_p0))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -716,7 +693,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIRAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -732,7 +708,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MKNODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -763,8 +738,6 @@ func PivotRoot(newroot string, putold string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_PIVOT_ROOT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -822,8 +795,6 @@ func Removexattr(path string, attr string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -844,8 +815,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := Syscall6(SYS_RENAMEAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -955,8 +924,6 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1039,7 +1006,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1480,7 +1446,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN32, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1506,7 +1471,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1625,7 +1589,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1712,7 +1675,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_TRUNCATE64, uintptr(unsafe.Pointer(_p0)), 0, uintptr(length), uintptr(length>>32), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_linux_arm64.go b/vendor/golang.org/x/sys/unix/zsyscall_linux_arm64.go
index 0d584cc..c3dbcad 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_linux_arm64.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_linux_arm64.go
@@ -1,7 +1,7 @@
-// mksyscall.pl syscall_linux.go syscall_linux_arm64.go
+// mksyscall.pl -tags linux,arm64 syscall_linux.go syscall_linux_arm64.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build arm64,linux
+// +build linux,arm64
 
 package unix
 
@@ -26,8 +26,6 @@ func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags in
 		return
 	}
 	_, _, e1 := Syscall6(SYS_LINKAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -43,7 +41,6 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -77,7 +74,6 @@ func Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_READLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -99,8 +95,6 @@ func Symlinkat(oldpath string, newdirfd int, newpath string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINKAT, uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -116,7 +110,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -132,7 +125,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -148,7 +140,6 @@ func utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error
 		return
 	}
 	_, _, e1 := Syscall6(SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -212,7 +203,6 @@ func reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_REBOOT, uintptr(magic1), uintptr(magic2), uintptr(cmd), uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,9 +228,6 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(data)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
-	use(unsafe.Pointer(_p2))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -256,7 +243,6 @@ func Acct(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -283,7 +269,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -299,7 +284,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +379,6 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FACCESSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -441,7 +424,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -457,7 +439,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHOWNAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -609,8 +590,6 @@ func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -627,7 +606,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 		return
 	}
 	r0, _, e1 := Syscall(SYS_INOTIFY_ADD_WATCH, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(mask))
-	use(unsafe.Pointer(_p0))
 	watchdesc = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -699,7 +677,6 @@ func Listxattr(path string, dest []byte) (sz int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
-	use(unsafe.Pointer(_p0))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -716,7 +693,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIRAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -732,7 +708,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MKNODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -763,8 +738,6 @@ func PivotRoot(newroot string, putold string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_PIVOT_ROOT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -822,8 +795,6 @@ func Removexattr(path string, attr string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -844,8 +815,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := Syscall6(SYS_RENAMEAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -955,8 +924,6 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1039,7 +1006,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1255,7 +1221,6 @@ func Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FSTATAT, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1501,7 +1466,6 @@ func Statfs(path string, buf *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1527,7 +1491,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_linux_mips.go b/vendor/golang.org/x/sys/unix/zsyscall_linux_mips.go
index a18e0b1..3fd164a 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_linux_mips.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_linux_mips.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -b32 -arm syscall_linux.go syscall_linux_mipsx.go
+// mksyscall.pl -b32 -arm -tags linux,mips syscall_linux.go syscall_linux_mipsx.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build mips,linux
+// +build linux,mips
 
 package unix
 
@@ -26,8 +26,6 @@ func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags in
 		return
 	}
 	_, _, e1 := Syscall6(SYS_LINKAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -43,7 +41,6 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -77,7 +74,6 @@ func Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_READLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -99,8 +95,6 @@ func Symlinkat(oldpath string, newdirfd int, newpath string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINKAT, uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -116,7 +110,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -132,7 +125,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -148,7 +140,6 @@ func utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error
 		return
 	}
 	_, _, e1 := Syscall6(SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -212,7 +203,6 @@ func reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_REBOOT, uintptr(magic1), uintptr(magic2), uintptr(cmd), uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,9 +228,6 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(data)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
-	use(unsafe.Pointer(_p2))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -256,7 +243,6 @@ func Acct(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -283,7 +269,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -299,7 +284,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +379,6 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FACCESSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -441,7 +424,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -457,7 +439,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHOWNAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -609,8 +590,6 @@ func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -627,7 +606,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 		return
 	}
 	r0, _, e1 := Syscall(SYS_INOTIFY_ADD_WATCH, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(mask))
-	use(unsafe.Pointer(_p0))
 	watchdesc = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -699,7 +677,6 @@ func Listxattr(path string, dest []byte) (sz int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
-	use(unsafe.Pointer(_p0))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -716,7 +693,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIRAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -732,7 +708,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MKNODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -763,8 +738,6 @@ func PivotRoot(newroot string, putold string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_PIVOT_ROOT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -822,8 +795,6 @@ func Removexattr(path string, attr string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -844,8 +815,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := Syscall6(SYS_RENAMEAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -955,8 +924,6 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1039,7 +1006,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1280,7 +1246,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1453,7 +1418,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_TRUNCATE64, uintptr(unsafe.Pointer(_p0)), 0, uintptr(length>>32), uintptr(length), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1700,7 +1664,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1726,7 +1689,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1742,7 +1704,6 @@ func Utime(path string, buf *Utimbuf) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_linux_mips64.go b/vendor/golang.org/x/sys/unix/zsyscall_linux_mips64.go
index bf6f360..a26cad4 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_linux_mips64.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_linux_mips64.go
@@ -1,7 +1,7 @@
-// mksyscall.pl syscall_linux.go syscall_linux_mips64x.go
+// mksyscall.pl -tags linux,mips64 syscall_linux.go syscall_linux_mips64x.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build mips64,linux
+// +build linux,mips64
 
 package unix
 
@@ -26,8 +26,6 @@ func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags in
 		return
 	}
 	_, _, e1 := Syscall6(SYS_LINKAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -43,7 +41,6 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -77,7 +74,6 @@ func Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_READLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -99,8 +95,6 @@ func Symlinkat(oldpath string, newdirfd int, newpath string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINKAT, uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -116,7 +110,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -132,7 +125,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -148,7 +140,6 @@ func utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error
 		return
 	}
 	_, _, e1 := Syscall6(SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -212,7 +203,6 @@ func reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_REBOOT, uintptr(magic1), uintptr(magic2), uintptr(cmd), uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,9 +228,6 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(data)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
-	use(unsafe.Pointer(_p2))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -256,7 +243,6 @@ func Acct(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -283,7 +269,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -299,7 +284,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +379,6 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FACCESSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -441,7 +424,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -457,7 +439,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHOWNAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -609,8 +590,6 @@ func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -627,7 +606,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 		return
 	}
 	r0, _, e1 := Syscall(SYS_INOTIFY_ADD_WATCH, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(mask))
-	use(unsafe.Pointer(_p0))
 	watchdesc = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -699,7 +677,6 @@ func Listxattr(path string, dest []byte) (sz int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
-	use(unsafe.Pointer(_p0))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -716,7 +693,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIRAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -732,7 +708,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MKNODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -763,8 +738,6 @@ func PivotRoot(newroot string, putold string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_PIVOT_ROOT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -822,8 +795,6 @@ func Removexattr(path string, attr string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -844,8 +815,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := Syscall6(SYS_RENAMEAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -955,8 +924,6 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1039,7 +1006,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1307,7 +1273,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1501,7 +1466,6 @@ func Statfs(path string, buf *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1527,7 +1491,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1743,7 +1706,6 @@ func Utime(path string, buf *Utimbuf) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1779,7 +1741,6 @@ func lstat(path string, st *stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(st)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1795,7 +1756,6 @@ func stat(path string, st *stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(st)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_linux_mips64le.go b/vendor/golang.org/x/sys/unix/zsyscall_linux_mips64le.go
index 8c86bd7..7cc92ad 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_linux_mips64le.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_linux_mips64le.go
@@ -1,7 +1,7 @@
-// mksyscall.pl syscall_linux.go syscall_linux_mips64x.go
+// mksyscall.pl -tags linux,mips64le syscall_linux.go syscall_linux_mips64x.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build mips64le,linux
+// +build linux,mips64le
 
 package unix
 
@@ -26,8 +26,6 @@ func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags in
 		return
 	}
 	_, _, e1 := Syscall6(SYS_LINKAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -43,7 +41,6 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -77,7 +74,6 @@ func Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_READLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -99,8 +95,6 @@ func Symlinkat(oldpath string, newdirfd int, newpath string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINKAT, uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -116,7 +110,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -132,7 +125,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -148,7 +140,6 @@ func utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error
 		return
 	}
 	_, _, e1 := Syscall6(SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -212,7 +203,6 @@ func reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_REBOOT, uintptr(magic1), uintptr(magic2), uintptr(cmd), uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,9 +228,6 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(data)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
-	use(unsafe.Pointer(_p2))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -256,7 +243,6 @@ func Acct(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -283,7 +269,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -299,7 +284,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +379,6 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FACCESSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -441,7 +424,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -457,7 +439,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHOWNAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -609,8 +590,6 @@ func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -627,7 +606,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 		return
 	}
 	r0, _, e1 := Syscall(SYS_INOTIFY_ADD_WATCH, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(mask))
-	use(unsafe.Pointer(_p0))
 	watchdesc = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -699,7 +677,6 @@ func Listxattr(path string, dest []byte) (sz int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
-	use(unsafe.Pointer(_p0))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -716,7 +693,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIRAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -732,7 +708,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MKNODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -763,8 +738,6 @@ func PivotRoot(newroot string, putold string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_PIVOT_ROOT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -822,8 +795,6 @@ func Removexattr(path string, attr string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -844,8 +815,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := Syscall6(SYS_RENAMEAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -955,8 +924,6 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1039,7 +1006,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1307,7 +1273,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1501,7 +1466,6 @@ func Statfs(path string, buf *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1527,7 +1491,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1743,7 +1706,6 @@ func Utime(path string, buf *Utimbuf) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1779,7 +1741,6 @@ func lstat(path string, st *stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(st)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1795,7 +1756,6 @@ func stat(path string, st *stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(st)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go b/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go
index 645e00e..79f26e5 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_linux_mipsle.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -l32 -arm syscall_linux.go syscall_linux_mipsx.go
+// mksyscall.pl -l32 -arm -tags linux,mipsle syscall_linux.go syscall_linux_mipsx.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build mipsle,linux
+// +build linux,mipsle
 
 package unix
 
@@ -26,8 +26,6 @@ func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags in
 		return
 	}
 	_, _, e1 := Syscall6(SYS_LINKAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -43,7 +41,6 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -77,7 +74,6 @@ func Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_READLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -99,8 +95,6 @@ func Symlinkat(oldpath string, newdirfd int, newpath string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINKAT, uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -116,7 +110,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -132,7 +125,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -148,7 +140,6 @@ func utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error
 		return
 	}
 	_, _, e1 := Syscall6(SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -212,7 +203,6 @@ func reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_REBOOT, uintptr(magic1), uintptr(magic2), uintptr(cmd), uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,9 +228,6 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(data)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
-	use(unsafe.Pointer(_p2))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -256,7 +243,6 @@ func Acct(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -283,7 +269,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -299,7 +284,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +379,6 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FACCESSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -441,7 +424,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -457,7 +439,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHOWNAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -609,8 +590,6 @@ func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -627,7 +606,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 		return
 	}
 	r0, _, e1 := Syscall(SYS_INOTIFY_ADD_WATCH, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(mask))
-	use(unsafe.Pointer(_p0))
 	watchdesc = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -699,7 +677,6 @@ func Listxattr(path string, dest []byte) (sz int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
-	use(unsafe.Pointer(_p0))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -716,7 +693,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIRAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -732,7 +708,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MKNODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -763,8 +738,6 @@ func PivotRoot(newroot string, putold string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_PIVOT_ROOT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -822,8 +795,6 @@ func Removexattr(path string, attr string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -844,8 +815,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := Syscall6(SYS_RENAMEAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -955,8 +924,6 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1039,7 +1006,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1280,7 +1246,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1453,7 +1418,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_TRUNCATE64, uintptr(unsafe.Pointer(_p0)), 0, uintptr(length), uintptr(length>>32), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1700,7 +1664,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1726,7 +1689,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT64, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1742,7 +1704,6 @@ func Utime(path string, buf *Utimbuf) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_linux_ppc64.go b/vendor/golang.org/x/sys/unix/zsyscall_linux_ppc64.go
index f5d488b..27befca 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_linux_ppc64.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_linux_ppc64.go
@@ -1,7 +1,7 @@
-// mksyscall.pl syscall_linux.go syscall_linux_ppc64x.go
+// mksyscall.pl -tags linux,ppc64 syscall_linux.go syscall_linux_ppc64x.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build ppc64,linux
+// +build linux,ppc64
 
 package unix
 
@@ -26,8 +26,6 @@ func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags in
 		return
 	}
 	_, _, e1 := Syscall6(SYS_LINKAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -43,7 +41,6 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -77,7 +74,6 @@ func Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_READLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -99,8 +95,6 @@ func Symlinkat(oldpath string, newdirfd int, newpath string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINKAT, uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -116,7 +110,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -132,7 +125,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -148,7 +140,6 @@ func utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error
 		return
 	}
 	_, _, e1 := Syscall6(SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -212,7 +203,6 @@ func reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_REBOOT, uintptr(magic1), uintptr(magic2), uintptr(cmd), uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,9 +228,6 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(data)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
-	use(unsafe.Pointer(_p2))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -256,7 +243,6 @@ func Acct(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -283,7 +269,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -299,7 +284,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +379,6 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FACCESSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -441,7 +424,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -457,7 +439,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHOWNAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -609,8 +590,6 @@ func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -627,7 +606,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 		return
 	}
 	r0, _, e1 := Syscall(SYS_INOTIFY_ADD_WATCH, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(mask))
-	use(unsafe.Pointer(_p0))
 	watchdesc = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -699,7 +677,6 @@ func Listxattr(path string, dest []byte) (sz int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
-	use(unsafe.Pointer(_p0))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -716,7 +693,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIRAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -732,7 +708,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MKNODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -763,8 +738,6 @@ func PivotRoot(newroot string, putold string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_PIVOT_ROOT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -822,8 +795,6 @@ func Removexattr(path string, attr string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -844,8 +815,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := Syscall6(SYS_RENAMEAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -955,8 +924,6 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1039,7 +1006,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1358,7 +1324,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1384,7 +1349,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1568,7 +1532,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1584,7 +1547,6 @@ func Statfs(path string, buf *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1610,7 +1572,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1837,7 +1798,6 @@ func Utime(path string, buf *Utimbuf) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_linux_ppc64le.go b/vendor/golang.org/x/sys/unix/zsyscall_linux_ppc64le.go
index 5183711..0dc288e 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_linux_ppc64le.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_linux_ppc64le.go
@@ -1,7 +1,7 @@
-// mksyscall.pl syscall_linux.go syscall_linux_ppc64x.go
+// mksyscall.pl -tags linux,ppc64le syscall_linux.go syscall_linux_ppc64x.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build ppc64le,linux
+// +build linux,ppc64le
 
 package unix
 
@@ -26,8 +26,6 @@ func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags in
 		return
 	}
 	_, _, e1 := Syscall6(SYS_LINKAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -43,7 +41,6 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -77,7 +74,6 @@ func Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_READLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -99,8 +95,6 @@ func Symlinkat(oldpath string, newdirfd int, newpath string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINKAT, uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -116,7 +110,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -132,7 +125,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -148,7 +140,6 @@ func utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error
 		return
 	}
 	_, _, e1 := Syscall6(SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -212,7 +203,6 @@ func reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_REBOOT, uintptr(magic1), uintptr(magic2), uintptr(cmd), uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,9 +228,6 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(data)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
-	use(unsafe.Pointer(_p2))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -256,7 +243,6 @@ func Acct(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -283,7 +269,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -299,7 +284,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +379,6 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FACCESSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -441,7 +424,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -457,7 +439,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHOWNAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -609,8 +590,6 @@ func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -627,7 +606,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 		return
 	}
 	r0, _, e1 := Syscall(SYS_INOTIFY_ADD_WATCH, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(mask))
-	use(unsafe.Pointer(_p0))
 	watchdesc = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -699,7 +677,6 @@ func Listxattr(path string, dest []byte) (sz int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
-	use(unsafe.Pointer(_p0))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -716,7 +693,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIRAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -732,7 +708,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MKNODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -763,8 +738,6 @@ func PivotRoot(newroot string, putold string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_PIVOT_ROOT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -822,8 +795,6 @@ func Removexattr(path string, attr string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -844,8 +815,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := Syscall6(SYS_RENAMEAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -955,8 +924,6 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1039,7 +1006,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1358,7 +1324,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1384,7 +1349,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1568,7 +1532,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1584,7 +1547,6 @@ func Statfs(path string, buf *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1610,7 +1572,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1837,7 +1798,6 @@ func Utime(path string, buf *Utimbuf) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_linux_s390x.go b/vendor/golang.org/x/sys/unix/zsyscall_linux_s390x.go
index 4c7ed08..33c086b 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_linux_s390x.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_linux_s390x.go
@@ -1,7 +1,7 @@
-// mksyscall.pl syscall_linux.go syscall_linux_s390x.go
+// mksyscall.pl -tags linux,s390x syscall_linux.go syscall_linux_s390x.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build s390x,linux
+// +build linux,s390x
 
 package unix
 
@@ -26,8 +26,6 @@ func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags in
 		return
 	}
 	_, _, e1 := Syscall6(SYS_LINKAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -43,7 +41,6 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -77,7 +74,6 @@ func Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_READLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -99,8 +95,6 @@ func Symlinkat(oldpath string, newdirfd int, newpath string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINKAT, uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -116,7 +110,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -132,7 +125,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -148,7 +140,6 @@ func utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error
 		return
 	}
 	_, _, e1 := Syscall6(SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -212,7 +203,6 @@ func reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_REBOOT, uintptr(magic1), uintptr(magic2), uintptr(cmd), uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,9 +228,6 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(data)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
-	use(unsafe.Pointer(_p2))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -256,7 +243,6 @@ func Acct(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -283,7 +269,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -299,7 +284,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +379,6 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FACCESSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -441,7 +424,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -457,7 +439,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHOWNAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -609,8 +590,6 @@ func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -627,7 +606,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 		return
 	}
 	r0, _, e1 := Syscall(SYS_INOTIFY_ADD_WATCH, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(mask))
-	use(unsafe.Pointer(_p0))
 	watchdesc = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -699,7 +677,6 @@ func Listxattr(path string, dest []byte) (sz int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
-	use(unsafe.Pointer(_p0))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -716,7 +693,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIRAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -732,7 +708,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MKNODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -763,8 +738,6 @@ func PivotRoot(newroot string, putold string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_PIVOT_ROOT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -822,8 +795,6 @@ func Removexattr(path string, attr string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -844,8 +815,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := Syscall6(SYS_RENAMEAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -955,8 +924,6 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1039,7 +1006,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1348,7 +1314,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1364,7 +1329,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1538,7 +1502,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1554,7 +1517,6 @@ func Statfs(path string, buf *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1580,7 +1542,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1627,7 +1588,6 @@ func Utime(path string, buf *Utimbuf) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_linux_sparc64.go b/vendor/golang.org/x/sys/unix/zsyscall_linux_sparc64.go
index beb83e4..071b85c 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_linux_sparc64.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_linux_sparc64.go
@@ -1,7 +1,7 @@
 // mksyscall.pl syscall_linux.go syscall_linux_sparc64.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build sparc64,linux
+// +build
 
 package unix
 
@@ -26,8 +26,6 @@ func Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags in
 		return
 	}
 	_, _, e1 := Syscall6(SYS_LINKAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -43,7 +41,6 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := Syscall6(SYS_OPENAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -77,7 +74,6 @@ func Readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_READLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -99,8 +95,6 @@ func Symlinkat(oldpath string, newdirfd int, newpath string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINKAT, uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)))
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -116,7 +110,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINKAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -132,7 +125,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -148,7 +140,6 @@ func utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error
 		return
 	}
 	_, _, e1 := Syscall6(SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -212,7 +203,6 @@ func reboot(magic1 uint, magic2 uint, cmd int, arg string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_REBOOT, uintptr(magic1), uintptr(magic2), uintptr(cmd), uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,9 +228,6 @@ func mount(source string, target string, fstype string, flags uintptr, data *byt
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(unsafe.Pointer(_p2)), uintptr(flags), uintptr(unsafe.Pointer(data)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
-	use(unsafe.Pointer(_p2))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -256,7 +243,6 @@ func Acct(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -283,7 +269,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -299,7 +284,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -395,7 +379,6 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FACCESSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -441,7 +424,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHMODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -457,7 +439,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_FCHOWNAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -609,8 +590,6 @@ func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall6(SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -627,7 +606,6 @@ func InotifyAddWatch(fd int, pathname string, mask uint32) (watchdesc int, err e
 		return
 	}
 	r0, _, e1 := Syscall(SYS_INOTIFY_ADD_WATCH, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(mask))
-	use(unsafe.Pointer(_p0))
 	watchdesc = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -699,7 +677,6 @@ func Listxattr(path string, dest []byte) (sz int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
-	use(unsafe.Pointer(_p0))
 	sz = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -716,7 +693,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIRAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -732,7 +708,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_MKNODAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -763,8 +738,6 @@ func PivotRoot(newroot string, putold string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_PIVOT_ROOT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -822,8 +795,6 @@ func Removexattr(path string, attr string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -844,8 +815,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := Syscall6(SYS_RENAMEAT, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -955,8 +924,6 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
 		_p2 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1039,7 +1006,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UMOUNT2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1338,7 +1304,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1364,7 +1329,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1548,7 +1512,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1564,7 +1527,6 @@ func Statfs(path string, buf *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1590,7 +1552,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1806,7 +1767,6 @@ func Utime(path string, buf *Utimbuf) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_netbsd_386.go b/vendor/golang.org/x/sys/unix/zsyscall_netbsd_386.go
index b16e1d0..3182345 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_netbsd_386.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_netbsd_386.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -l32 -netbsd syscall_bsd.go syscall_netbsd.go syscall_netbsd_386.go
+// mksyscall.pl -l32 -netbsd -tags netbsd,386 syscall_bsd.go syscall_netbsd.go syscall_netbsd_386.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build 386,netbsd
+// +build netbsd,386
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -304,7 +302,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -330,7 +327,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -346,7 +342,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -362,7 +357,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -378,7 +372,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -394,7 +387,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -687,7 +679,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -708,8 +699,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -735,7 +724,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -751,7 +739,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -767,7 +754,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -783,7 +769,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -877,7 +862,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -894,7 +878,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -968,7 +951,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -990,8 +972,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1007,7 +987,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1023,7 +1002,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1171,7 +1149,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1192,8 +1169,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1219,7 +1194,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), 0, uintptr(length), uintptr(length>>32), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1243,7 +1217,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1259,7 +1232,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_netbsd_amd64.go b/vendor/golang.org/x/sys/unix/zsyscall_netbsd_amd64.go
index b63667d..74ba818 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_netbsd_amd64.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_netbsd_amd64.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -netbsd syscall_bsd.go syscall_netbsd.go syscall_netbsd_amd64.go
+// mksyscall.pl -netbsd -tags netbsd,amd64 syscall_bsd.go syscall_netbsd.go syscall_netbsd_amd64.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build amd64,netbsd
+// +build netbsd,amd64
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -304,7 +302,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -330,7 +327,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -346,7 +342,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -362,7 +357,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -378,7 +372,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -394,7 +387,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -687,7 +679,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -708,8 +699,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -735,7 +724,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -751,7 +739,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -767,7 +754,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -783,7 +769,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -877,7 +862,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -894,7 +878,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -968,7 +951,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -990,8 +972,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1007,7 +987,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1023,7 +1002,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1171,7 +1149,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1192,8 +1169,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1219,7 +1194,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), 0, uintptr(length))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1243,7 +1217,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1259,7 +1232,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_netbsd_arm.go b/vendor/golang.org/x/sys/unix/zsyscall_netbsd_arm.go
index b0d1903..1f346e2 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_netbsd_arm.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_netbsd_arm.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -l32 -arm syscall_bsd.go syscall_netbsd.go syscall_netbsd_arm.go
+// mksyscall.pl -l32 -arm -tags netbsd,arm syscall_bsd.go syscall_netbsd.go syscall_netbsd_arm.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build arm,netbsd
+// +build netbsd,arm
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -304,7 +302,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -330,7 +327,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -346,7 +342,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -362,7 +357,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -378,7 +372,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -394,7 +387,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -687,7 +679,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -708,8 +699,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -735,7 +724,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -751,7 +739,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -767,7 +754,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -783,7 +769,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -877,7 +862,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -894,7 +878,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -968,7 +951,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -990,8 +972,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1007,7 +987,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1023,7 +1002,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1171,7 +1149,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1192,8 +1169,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1219,7 +1194,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), 0, uintptr(length), uintptr(length>>32), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1243,7 +1217,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1259,7 +1232,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_openbsd_386.go b/vendor/golang.org/x/sys/unix/zsyscall_openbsd_386.go
index f91a5b8..ca3e813 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_openbsd_386.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_openbsd_386.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -l32 -openbsd syscall_bsd.go syscall_openbsd.go syscall_openbsd_386.go
+// mksyscall.pl -l32 -openbsd -tags openbsd,386 syscall_bsd.go syscall_openbsd.go syscall_openbsd_386.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build 386,openbsd
+// +build openbsd,386
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -302,7 +300,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -328,7 +325,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -344,7 +340,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -360,7 +355,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -376,7 +370,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -392,7 +385,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -695,7 +687,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -716,8 +707,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -743,7 +732,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -759,7 +747,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -775,7 +762,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -791,7 +777,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -885,7 +870,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -902,7 +886,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -976,7 +959,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -998,8 +980,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1015,7 +995,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1031,7 +1010,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1098,7 +1076,6 @@ func Setlogin(name string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SETLOGIN, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1215,7 +1192,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1231,7 +1207,6 @@ func Statfs(path string, stat *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1252,8 +1227,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1279,7 +1252,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall6(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), 0, uintptr(length), uintptr(length>>32), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1303,7 +1275,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1319,7 +1290,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_openbsd_amd64.go b/vendor/golang.org/x/sys/unix/zsyscall_openbsd_amd64.go
index 2e8d59d..bf63d55 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_openbsd_amd64.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_openbsd_amd64.go
@@ -1,7 +1,7 @@
-// mksyscall.pl -openbsd syscall_bsd.go syscall_openbsd.go syscall_openbsd_amd64.go
+// mksyscall.pl -openbsd -tags openbsd,amd64 syscall_bsd.go syscall_openbsd.go syscall_openbsd_amd64.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build amd64,openbsd
+// +build openbsd,amd64
 
 package unix
 
@@ -222,7 +222,6 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
-	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -238,7 +237,6 @@ func utimes(path string, timeval *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UTIMES, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(timeval)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -302,7 +300,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_ACCESS, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -328,7 +325,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -344,7 +340,6 @@ func Chflags(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHFLAGS, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -360,7 +355,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHMOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -376,7 +370,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -392,7 +385,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_CHROOT, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -695,7 +687,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LCHOWN, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -716,8 +707,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -743,7 +732,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_LSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -759,7 +747,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKDIR, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -775,7 +762,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKFIFO, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -791,7 +777,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_MKNOD, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -885,7 +870,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_OPEN, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm))
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -902,7 +886,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := Syscall(SYS_PATHCONF, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -976,7 +959,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = unsafe.Pointer(&_zero)
 	}
 	r0, _, e1 := Syscall(SYS_READLINK, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(buf)))
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = errnoErr(e1)
@@ -998,8 +980,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RENAME, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1015,7 +995,6 @@ func Revoke(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_REVOKE, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1031,7 +1010,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_RMDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1098,7 +1076,6 @@ func Setlogin(name string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SETLOGIN, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1215,7 +1192,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1231,7 +1207,6 @@ func Statfs(path string, stat *Statfs_t) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_STATFS, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1252,8 +1227,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_SYMLINK, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1279,7 +1252,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_TRUNCATE, uintptr(unsafe.Pointer(_p0)), 0, uintptr(length))
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1303,7 +1275,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNLINK, uintptr(unsafe.Pointer(_p0)), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
@@ -1319,7 +1290,6 @@ func Unmount(path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}
diff --git a/vendor/golang.org/x/sys/unix/zsyscall_solaris_amd64.go b/vendor/golang.org/x/sys/unix/zsyscall_solaris_amd64.go
index c0ecfc0..bdf140b 100644
--- a/vendor/golang.org/x/sys/unix/zsyscall_solaris_amd64.go
+++ b/vendor/golang.org/x/sys/unix/zsyscall_solaris_amd64.go
@@ -1,7 +1,7 @@
-// mksyscall_solaris.pl syscall_solaris.go syscall_solaris_amd64.go
+// mksyscall_solaris.pl -tags solaris,amd64 syscall_solaris.go syscall_solaris_amd64.go
 // MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
 
-// +build amd64,solaris
+// +build solaris,amd64
 
 package unix
 
@@ -442,7 +442,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procutimes)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -456,7 +455,6 @@ func utimensat(fd int, path string, times *[2]Timespec, flag int) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procutimensat)), 4, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flag), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -530,7 +528,6 @@ func Access(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procAccess)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -552,7 +549,6 @@ func Chdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procChdir)), 1, uintptr(unsafe.Pointer(_p0)), 0, 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -566,7 +562,6 @@ func Chmod(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procChmod)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -580,7 +575,6 @@ func Chown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procChown)), 3, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -594,7 +588,6 @@ func Chroot(path string) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procChroot)), 1, uintptr(unsafe.Pointer(_p0)), 0, 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -616,7 +609,6 @@ func Creat(path string, mode uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procCreat)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = e1
@@ -669,7 +661,6 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procFchmodat)), 4, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(flags), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -691,7 +682,6 @@ func Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procFchownat)), 5, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), uintptr(flags), 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -838,7 +828,6 @@ func Lchown(path string, uid int, gid int) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procLchown)), 3, uintptr(unsafe.Pointer(_p0)), uintptr(uid), uintptr(gid), 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -857,8 +846,6 @@ func Link(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procLink)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = e1
 	}
@@ -880,7 +867,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procLstat)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -906,7 +892,6 @@ func Mkdir(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procMkdir)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -920,7 +905,6 @@ func Mkdirat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procMkdirat)), 3, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -934,7 +918,6 @@ func Mkfifo(path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procMkfifo)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -948,7 +931,6 @@ func Mkfifoat(dirfd int, path string, mode uint32) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procMkfifoat)), 3, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -962,7 +944,6 @@ func Mknod(path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procMknod)), 3, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -976,7 +957,6 @@ func Mknodat(dirfd int, path string, mode uint32, dev int) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procMknodat)), 4, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(dev), 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -1050,7 +1030,6 @@ func Open(path string, mode int, perm uint32) (fd int, err error) {
 		return
 	}
 	r0, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procOpen)), 3, uintptr(unsafe.Pointer(_p0)), uintptr(mode), uintptr(perm), 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = e1
@@ -1065,7 +1044,6 @@ func Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 		return
 	}
 	r0, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procOpenat)), 4, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), uintptr(mode), 0, 0)
-	use(unsafe.Pointer(_p0))
 	fd = int(r0)
 	if e1 != 0 {
 		err = e1
@@ -1080,7 +1058,6 @@ func Pathconf(path string, name int) (val int, err error) {
 		return
 	}
 	r0, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procPathconf)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(name), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	val = int(r0)
 	if e1 != 0 {
 		err = e1
@@ -1146,7 +1123,6 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		_p1 = &buf[0]
 	}
 	r0, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procReadlink)), 3, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(len(buf)), 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	n = int(r0)
 	if e1 != 0 {
 		err = e1
@@ -1166,8 +1142,6 @@ func Rename(from string, to string) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procRename)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = e1
 	}
@@ -1186,8 +1160,6 @@ func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err e
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procRenameat)), 4, uintptr(olddirfd), uintptr(unsafe.Pointer(_p0)), uintptr(newdirfd), uintptr(unsafe.Pointer(_p1)), 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = e1
 	}
@@ -1201,7 +1173,6 @@ func Rmdir(path string) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procRmdir)), 1, uintptr(unsafe.Pointer(_p0)), 0, 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -1325,7 +1296,6 @@ func Stat(path string, stat *Stat_t) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procStat)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(stat)), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -1344,8 +1314,6 @@ func Symlink(path string, link string) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procSymlink)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
-	use(unsafe.Pointer(_p1))
 	if e1 != 0 {
 		err = e1
 	}
@@ -1376,7 +1344,6 @@ func Truncate(path string, length int64) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procTruncate)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(length), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -1420,7 +1387,6 @@ func Unmount(target string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procumount)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -1434,7 +1400,6 @@ func Unlink(path string) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procUnlink)), 1, uintptr(unsafe.Pointer(_p0)), 0, 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -1448,7 +1413,6 @@ func Unlinkat(dirfd int, path string, flags int) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procUnlinkat)), 3, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
@@ -1470,7 +1434,6 @@ func Utime(path string, buf *Utimbuf) (err error) {
 		return
 	}
 	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procUtime)), 2, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(buf)), 0, 0, 0, 0)
-	use(unsafe.Pointer(_p0))
 	if e1 != 0 {
 		err = e1
 	}
diff --git a/vendor/golang.org/x/text/unicode/norm/forminfo.go b/vendor/golang.org/x/text/unicode/norm/forminfo.go
index 15a67c6..8c78b15 100644
--- a/vendor/golang.org/x/text/unicode/norm/forminfo.go
+++ b/vendor/golang.org/x/text/unicode/norm/forminfo.go
@@ -56,28 +56,31 @@ type formInfo struct {
 	nextMain                 iterFunc
 }
 
-var formTable []*formInfo
-
-func init() {
-	formTable = make([]*formInfo, 4)
-
-	for i := range formTable {
-		f := &formInfo{}
-		formTable[i] = f
-		f.form = Form(i)
-		if Form(i) == NFKD || Form(i) == NFKC {
-			f.compatibility = true
-			f.info = lookupInfoNFKC
-		} else {
-			f.info = lookupInfoNFC
-		}
-		f.nextMain = nextDecomposed
-		if Form(i) == NFC || Form(i) == NFKC {
-			f.nextMain = nextComposed
-			f.composing = true
-		}
-	}
-}
+var formTable = []*formInfo{{
+	form:          NFC,
+	composing:     true,
+	compatibility: false,
+	info:          lookupInfoNFC,
+	nextMain:      nextComposed,
+}, {
+	form:          NFD,
+	composing:     false,
+	compatibility: false,
+	info:          lookupInfoNFC,
+	nextMain:      nextDecomposed,
+}, {
+	form:          NFKC,
+	composing:     true,
+	compatibility: true,
+	info:          lookupInfoNFKC,
+	nextMain:      nextComposed,
+}, {
+	form:          NFKD,
+	composing:     false,
+	compatibility: true,
+	info:          lookupInfoNFKC,
+	nextMain:      nextDecomposed,
+}}
 
 // We do not distinguish between boundaries for NFC, NFD, etc. to avoid
 // unexpected behavior for the user.  For example, in NFD, there is a boundary