1 files changed, 0 insertions, 106 deletions
diff --git a/test/tools/vendor/golang.org/x/xerrors/wrap.go b/test/tools/vendor/golang.org/x/xerrors/wrap.go
deleted file mode 100644
index 9a3b51037..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/wrap.go
+++ /dev/null
@@ -1,106 +0,0 @@
-// Copyright 2018 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.
-
-package xerrors
-
-import (
-	"reflect"
-)
-
-// A Wrapper provides context around another error.
-type Wrapper interface {
-	// Unwrap returns the next error in the error chain.
-	// If there is no next error, Unwrap returns nil.
-	Unwrap() error
-}
-
-// Opaque returns an error with the same error formatting as err
-// but that does not match err and cannot be unwrapped.
-func Opaque(err error) error {
-	return noWrapper{err}
-}
-
-type noWrapper struct {
-	error
-}
-
-func (e noWrapper) FormatError(p Printer) (next error) {
-	if f, ok := e.error.(Formatter); ok {
-		return f.FormatError(p)
-	}
-	p.Print(e.error)
-	return nil
-}
-
-// Unwrap returns the result of calling the Unwrap method on err, if err implements
-// Unwrap. Otherwise, Unwrap returns nil.
-func Unwrap(err error) error {
-	u, ok := err.(Wrapper)
-	if !ok {
-		return nil
-	}
-	return u.Unwrap()
-}
-
-// Is reports whether any error in err's chain matches target.
-//
-// An error is considered to match a target if it is equal to that target or if
-// it implements a method Is(error) bool such that Is(target) returns true.
-func Is(err, target error) bool {
-	if target == nil {
-		return err == target
-	}
-
-	isComparable := reflect.TypeOf(target).Comparable()
-	for {
-		if isComparable && err == target {
-			return true
-		}
-		if x, ok := err.(interface{ Is(error) bool }); ok && x.Is(target) {
-			return true
-		}
-		// TODO: consider supporing target.Is(err). This would allow
-		// user-definable predicates, but also may allow for coping with sloppy
-		// APIs, thereby making it easier to get away with them.
-		if err = Unwrap(err); err == nil {
-			return false
-		}
-	}
-}
-
-// As finds the first error in err's chain that matches the type to which target
-// points, and if so, sets the target to its value and returns true. An error
-// matches a type if it is assignable to the target type, or if it has a method
-// As(interface{}) bool such that As(target) returns true. As will panic if target
-// is not a non-nil pointer to a type which implements error or is of interface type.
-//
-// The As method should set the target to its value and return true if err
-// matches the type to which target points.
-func As(err error, target interface{}) bool {
-	if target == nil {
-		panic("errors: target cannot be nil")
-	}
-	val := reflect.ValueOf(target)
-	typ := val.Type()
-	if typ.Kind() != reflect.Ptr || val.IsNil() {
-		panic("errors: target must be a non-nil pointer")
-	}
-	if e := typ.Elem(); e.Kind() != reflect.Interface && !e.Implements(errorType) {
-		panic("errors: *target must be interface or implement error")
-	}
-	targetType := typ.Elem()
-	for err != nil {
-		if reflect.TypeOf(err).AssignableTo(targetType) {
-			val.Elem().Set(reflect.ValueOf(err))
-			return true
-		}
-		if x, ok := err.(interface{ As(interface{}) bool }); ok && x.As(target) {
-			return true
-		}
-		err = Unwrap(err)
-	}
-	return false
-}
-
-var errorType = reflect.TypeOf((*error)(nil)).Elem()