vendor: update all dependencies

* Update all dependencies
  * Remove all `[[constraint]]` from Gopkg.toml
  * Add in the minimum number of `[[override]]` to build
  * Remove go get of github.com/inconshreveable/mousetrap as it is vendored
  * Update docs with new policy on constraints

vendor/github.com/pkg/errors/.travis.yml

@@ -1,13 +1,10 @@
 language: go
 go_import_path: github.com/pkg/errors
 go:
-  - 1.4.x
-  - 1.5.x
-  - 1.6.x
-  - 1.7.x
-  - 1.8.x
-  - 1.9.x
-  - 1.10.x
+  - 1.4.3
+  - 1.5.4
+  - 1.6.2
+  - 1.7.1
   - tip
 
 script:

vendor/github.com/pkg/errors/README.md

@@ -1,4 +1,4 @@
-# errors [![Travis-CI](https://travis-ci.org/pkg/errors.svg)](https://travis-ci.org/pkg/errors) [![AppVeyor](https://ci.appveyor.com/api/projects/status/b98mptawhudj53ep/branch/master?svg=true)](https://ci.appveyor.com/project/davecheney/errors/branch/master) [![GoDoc](https://godoc.org/github.com/pkg/errors?status.svg)](http://godoc.org/github.com/pkg/errors) [![Report card](https://goreportcard.com/badge/github.com/pkg/errors)](https://goreportcard.com/report/github.com/pkg/errors) [![Sourcegraph](https://sourcegraph.com/github.com/pkg/errors/-/badge.svg)](https://sourcegraph.com/github.com/pkg/errors?badge)
+# errors [![Travis-CI](https://travis-ci.org/pkg/errors.svg)](https://travis-ci.org/pkg/errors) [![AppVeyor](https://ci.appveyor.com/api/projects/status/b98mptawhudj53ep/branch/master?svg=true)](https://ci.appveyor.com/project/davecheney/errors/branch/master) [![GoDoc](https://godoc.org/github.com/pkg/errors?status.svg)](http://godoc.org/github.com/pkg/errors) [![Report card](https://goreportcard.com/badge/github.com/pkg/errors)](https://goreportcard.com/report/github.com/pkg/errors)
 
 Package errors provides simple error handling primitives.
 
@@ -47,6 +47,6 @@ We welcome pull requests, bug fixes and issue reports. With that said, the bar f
 
 Before proposing a change, please discuss your change by raising an issue.
 
-## License
+## Licence
 
 BSD-2-Clause

vendor/github.com/pkg/errors/bench_test.go

@@ -15,7 +15,6 @@ func noErrors(at, depth int) error {
 	}
 	return noErrors(at+1, depth)
 }
-
 func yesErrors(at, depth int) error {
 	if at >= depth {
 		return New("ye error")
@@ -23,11 +22,8 @@ func yesErrors(at, depth int) error {
 	return yesErrors(at+1, depth)
 }
 
-// GlobalE is an exported global to store the result of benchmark results,
-// preventing the compiler from optimising the benchmark functions away.
-var GlobalE error
-
 func BenchmarkErrors(b *testing.B) {
+	var toperr error
 	type run struct {
 		stack int
 		std   bool
@@ -57,7 +53,7 @@ func BenchmarkErrors(b *testing.B) {
 				err = f(0, r.stack)
 			}
 			b.StopTimer()
-			GlobalE = err
+			toperr = err
 		})
 	}
 }

vendor/github.com/pkg/errors/errors_test.go

@@ -196,6 +196,7 @@ func TestWithMessage(t *testing.T) {
 			t.Errorf("WithMessage(%v, %q): got: %q, want %q", tt.err, tt.message, got, tt.want)
 		}
 	}
+
 }
 
 // errors.New, etc values are not expected to be compared by value

vendor/github.com/pkg/errors/format_test.go

@@ -491,7 +491,7 @@ type wrapper struct {
 	want []string
 }
 
-func prettyBlocks(blocks []string) string {
+func prettyBlocks(blocks []string, prefix ...string) string {
 	var out []string
 
 	for _, b := range blocks {

vendor/github.com/pkg/errors/stack.go

@@ -46,8 +46,7 @@ func (f Frame) line() int {
 //
 // Format accepts flags that alter the printing of some verbs, as follows:
 //
-//    %+s   function name and path of source file relative to the compile time
-//          GOPATH separated by \n\t (<funcname>\n\t<path>)
+//    %+s   path of source file relative to the compile time GOPATH
 //    %+v   equivalent to %+s:%d
 func (f Frame) Format(s fmt.State, verb rune) {
 	switch verb {
@@ -80,14 +79,6 @@ func (f Frame) Format(s fmt.State, verb rune) {
 // StackTrace is stack of Frames from innermost (newest) to outermost (oldest).
 type StackTrace []Frame
 
-// Format formats the stack of Frames according to the fmt.Formatter interface.
-//
-//    %s	lists source files for each Frame in the stack
-//    %v	lists the source file and line number for each Frame in the stack
-//
-// Format accepts flags that alter the printing of some verbs, as follows:
-//
-//    %+v   Prints filename, function, and line number for each Frame in the stack.
 func (st StackTrace) Format(s fmt.State, verb rune) {
 	switch verb {
 	case 'v':
@@ -145,3 +136,43 @@ func funcname(name string) string {
 	i = strings.Index(name, ".")
 	return name[i+1:]
 }
+
+func trimGOPATH(name, file string) string {
+	// Here we want to get the source file path relative to the compile time
+	// GOPATH. As of Go 1.6.x there is no direct way to know the compiled
+	// GOPATH at runtime, but we can infer the number of path segments in the
+	// GOPATH. We note that fn.Name() returns the function name qualified by
+	// the import path, which does not include the GOPATH. Thus we can trim
+	// segments from the beginning of the file path until the number of path
+	// separators remaining is one more than the number of path separators in
+	// the function name. For example, given:
+	//
+	//    GOPATH     /home/user
+	//    file       /home/user/src/pkg/sub/file.go
+	//    fn.Name()  pkg/sub.Type.Method
+	//
+	// We want to produce:
+	//
+	//    pkg/sub/file.go
+	//
+	// From this we can easily see that fn.Name() has one less path separator
+	// than our desired output. We count separators from the end of the file
+	// path until it finds two more than in the function name and then move
+	// one character forward to preserve the initial path segment without a
+	// leading separator.
+	const sep = "/"
+	goal := strings.Count(name, sep) + 2
+	i := len(file)
+	for n := 0; n < goal; n++ {
+		i = strings.LastIndex(file[:i], sep)
+		if i == -1 {
+			// not enough separators found, set i so that the slice expression
+			// below leaves file unmodified
+			i = -len(sep)
+			break
+		}
+	}
+	// get back to 0 or trim the leading separator
+	file = file[i+len(sep):]
+	return file
+}

vendor/github.com/pkg/errors/stack_test.go

@@ -146,6 +146,24 @@ func TestFuncname(t *testing.T) {
 	}
 }
 
+func TestTrimGOPATH(t *testing.T) {
+	var tests = []struct {
+		Frame
+		want string
+	}{{
+		Frame(initpc),
+		"github.com/pkg/errors/stack_test.go",
+	}}
+
+	for i, tt := range tests {
+		pc := tt.Frame.pc()
+		fn := runtime.FuncForPC(pc)
+		file, _ := fn.FileLine(pc)
+		got := trimGOPATH(fn.Name(), file)
+		testFormatRegexp(t, i, got, "%s", tt.want)
+	}
+}
+
 func TestStackTrace(t *testing.T) {
 	tests := []struct {
 		err  error
@@ -153,24 +171,24 @@ func TestStackTrace(t *testing.T) {
 	}{{
 		New("ooh"), []string{
 			"github.com/pkg/errors.TestStackTrace\n" +
-				"\t.+/github.com/pkg/errors/stack_test.go:154",
+				"\t.+/github.com/pkg/errors/stack_test.go:172",
 		},
 	}, {
 		Wrap(New("ooh"), "ahh"), []string{
 			"github.com/pkg/errors.TestStackTrace\n" +
-				"\t.+/github.com/pkg/errors/stack_test.go:159", // this is the stack of Wrap, not New
+				"\t.+/github.com/pkg/errors/stack_test.go:177", // this is the stack of Wrap, not New
 		},
 	}, {
 		Cause(Wrap(New("ooh"), "ahh")), []string{
 			"github.com/pkg/errors.TestStackTrace\n" +
-				"\t.+/github.com/pkg/errors/stack_test.go:164", // this is the stack of New
+				"\t.+/github.com/pkg/errors/stack_test.go:182", // this is the stack of New
 		},
 	}, {
 		func() error { return New("ooh") }(), []string{
 			`github.com/pkg/errors.(func·009|TestStackTrace.func1)` +
-				"\n\t.+/github.com/pkg/errors/stack_test.go:169", // this is the stack of New
+				"\n\t.+/github.com/pkg/errors/stack_test.go:187", // this is the stack of New
 			"github.com/pkg/errors.TestStackTrace\n" +
-				"\t.+/github.com/pkg/errors/stack_test.go:169", // this is the stack of New's caller
+				"\t.+/github.com/pkg/errors/stack_test.go:187", // this is the stack of New's caller
 		},
 	}, {
 		Cause(func() error {
@@ -179,11 +197,11 @@ func TestStackTrace(t *testing.T) {
 			}()
 		}()), []string{
 			`github.com/pkg/errors.(func·010|TestStackTrace.func2.1)` +
-				"\n\t.+/github.com/pkg/errors/stack_test.go:178", // this is the stack of Errorf
+				"\n\t.+/github.com/pkg/errors/stack_test.go:196", // this is the stack of Errorf
 			`github.com/pkg/errors.(func·011|TestStackTrace.func2)` +
-				"\n\t.+/github.com/pkg/errors/stack_test.go:179", // this is the stack of Errorf's caller
+				"\n\t.+/github.com/pkg/errors/stack_test.go:197", // this is the stack of Errorf's caller
 			"github.com/pkg/errors.TestStackTrace\n" +
-				"\t.+/github.com/pkg/errors/stack_test.go:180", // this is the stack of Errorf's caller's caller
+				"\t.+/github.com/pkg/errors/stack_test.go:198", // this is the stack of Errorf's caller's caller
 		},
 	}}
 	for i, tt := range tests {
@@ -253,19 +271,19 @@ func TestStackTraceFormat(t *testing.T) {
 	}, {
 		stackTrace()[:2],
 		"%v",
-		`\[stack_test.go:207 stack_test.go:254\]`,
+		`\[stack_test.go:225 stack_test.go:272\]`,
 	}, {
 		stackTrace()[:2],
 		"%+v",
 		"\n" +
 			"github.com/pkg/errors.stackTrace\n" +
-			"\t.+/github.com/pkg/errors/stack_test.go:207\n" +
+			"\t.+/github.com/pkg/errors/stack_test.go:225\n" +
 			"github.com/pkg/errors.TestStackTraceFormat\n" +
-			"\t.+/github.com/pkg/errors/stack_test.go:258",
+			"\t.+/github.com/pkg/errors/stack_test.go:276",
 	}, {
 		stackTrace()[:2],
 		"%#v",
-		`\[\]errors.Frame{stack_test.go:207, stack_test.go:266}`,
+		`\[\]errors.Frame{stack_test.go:225, stack_test.go:284}`,
 	}}
 
 	for i, tt := range tests {