Merge pull request #14562 from containers/dependabot/go_modules/test/tools/golang.org/x/tools-0.1.11

Bump golang.org/x/tools from 0.1.10 to 0.1.11 in /test/tools

42 files changed, 317 insertions, 828 deletions

diff --git a/test/tools/go.mod b/test/tools/go.mod
index 79d1fabe8..1c2867b99 100644
--- a/test/tools/go.mod
+++ b/test/tools/go.mod
@@ -5,5 +5,5 @@ go 1.16
 require (
 	github.com/cpuguy83/go-md2man/v2 v2.0.2
 	github.com/vbatts/git-validation v1.1.0
-	golang.org/x/tools v0.1.10
+	golang.org/x/tools v0.1.11
 )
diff --git a/test/tools/go.sum b/test/tools/go.sum
index 9b466cbea..d17c3e645 100644
--- a/test/tools/go.sum
+++ b/test/tools/go.sum
@@ -20,8 +20,8 @@ github.com/vbatts/git-validation v1.1.0/go.mod h1:QyK3uQnRYWGt/5ezd8kcpwPrm6zn9t
 github.com/yuin/goldmark v1.4.1/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3 h1:kQgndtyPBW/JIYERgdxfwMYh3AVStj88WQTlNDi2a+o=
-golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3/go.mod h1:3p9vT2HGsQu2K1YbXdKPJLVgG5VJdoTa1poYQBtP1AY=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 h1:6zppjxzCulZykYSLyVDYbneBfbaBIQPYMevg0bEwv2s=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
@@ -41,9 +41,6 @@ golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.1.10 h1:QjFRCZxdOhBJ/UNgnBZLbNV13DlbnK0quyivTnXJM20=
-golang.org/x/tools v0.1.10/go.mod h1:Uh6Zz+xoGYZom868N8YTex3t7RhtHDBrE8Gzo9bV56E=
+golang.org/x/tools v0.1.11 h1:loJ25fNOEhSXfHrpoGj91eCUThwdNX6u24rO1xnNteY=
+golang.org/x/tools v0.1.11/go.mod h1:SgwaegtQh8clINPpECJMqnxLv9I09HLqnW3RMqW0CA4=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
diff --git a/test/tools/vendor/github.com/cpuguy83/go-md2man/v2/Makefile b/test/tools/vendor/github.com/cpuguy83/go-md2man/v2/Makefile
index 97dd390e8..437fc9997 100644
--- a/test/tools/vendor/github.com/cpuguy83/go-md2man/v2/Makefile
+++ b/test/tools/vendor/github.com/cpuguy83/go-md2man/v2/Makefile
@@ -32,3 +32,4 @@ check-mod: # verifies that module changes for go.mod and go.sum are checked in
 .PHONY: vendor
 vendor: mod
 	@go mod vendor -v
+
diff --git a/test/tools/vendor/github.com/cpuguy83/go-md2man/v2/go-md2man.1.md b/test/tools/vendor/github.com/cpuguy83/go-md2man/v2/go-md2man.1.md
index ae722d078..16d1133aa 100644
--- a/test/tools/vendor/github.com/cpuguy83/go-md2man/v2/go-md2man.1.md
+++ b/test/tools/vendor/github.com/cpuguy83/go-md2man/v2/go-md2man.1.md
@@ -20,3 +20,4 @@ go-md2man 1 "January 2015" go-md2man "User Manual"
 
 # HISTORY
   January 2015, Originally compiled by Brian Goff( cpuguy83@gmail.com )
+
diff --git a/test/tools/vendor/github.com/hashicorp/go-version/.travis.yml b/test/tools/vendor/github.com/hashicorp/go-version/.travis.yml
index b5f955d7e..01c5dc219 100644
--- a/test/tools/vendor/github.com/hashicorp/go-version/.travis.yml
+++ b/test/tools/vendor/github.com/hashicorp/go-version/.travis.yml
@@ -1,6 +1,6 @@
-language: go
+language: go 
 
-go:
+go: 
   - 1.2
   - 1.3
   - 1.4
@@ -8,6 +8,6 @@ go:
   - "1.10"
   - 1.11
   - 1.12
-
+  
 script:
-  - go test
+  - go test 
diff --git a/test/tools/vendor/github.com/hashicorp/go-version/LICENSE b/test/tools/vendor/github.com/hashicorp/go-version/LICENSE
index 82b4de97c..c33dcc7c9 100644
--- a/test/tools/vendor/github.com/hashicorp/go-version/LICENSE
+++ b/test/tools/vendor/github.com/hashicorp/go-version/LICENSE
@@ -351,3 +351,4 @@ Exhibit B - “Incompatible With Secondary Licenses” Notice
       This Source Code Form is “Incompatible
       With Secondary Licenses”, as defined by
       the Mozilla Public License, v. 2.0.
+
diff --git a/test/tools/vendor/github.com/konsorten/go-windows-terminal-sequences/README.md b/test/tools/vendor/github.com/konsorten/go-windows-terminal-sequences/README.md
index f8c9aa99e..949b77e30 100644
--- a/test/tools/vendor/github.com/konsorten/go-windows-terminal-sequences/README.md
+++ b/test/tools/vendor/github.com/konsorten/go-windows-terminal-sequences/README.md
@@ -9,7 +9,7 @@ See [Console Virtual Terminal Sequences](https://docs.microsoft.com/en-us/window
 ```go
 import (
 	"syscall"
-
+	
 	sequences "github.com/konsorten/go-windows-terminal-sequences"
 )
 
diff --git a/test/tools/vendor/github.com/sirupsen/logrus/CHANGELOG.md b/test/tools/vendor/github.com/sirupsen/logrus/CHANGELOG.md
index 95ffc62ce..f62cbd24a 100644
--- a/test/tools/vendor/github.com/sirupsen/logrus/CHANGELOG.md
+++ b/test/tools/vendor/github.com/sirupsen/logrus/CHANGELOG.md
@@ -1,7 +1,7 @@
 # 1.4.1
 This new release introduces:
   * Enhance TextFormatter to not print caller information when they are empty (#944)
-  * Remove dependency on golang.org/x/crypto (#932, #943)
+  * Remove dependency on golang.org/x/crypto (#932, #943) 
 
 Fixes:
   * Fix Entry.WithContext method to return a copy of the initial entry (#941)
diff --git a/test/tools/vendor/github.com/sirupsen/logrus/README.md b/test/tools/vendor/github.com/sirupsen/logrus/README.md
index 3bf033166..a4796eb07 100644
--- a/test/tools/vendor/github.com/sirupsen/logrus/README.md
+++ b/test/tools/vendor/github.com/sirupsen/logrus/README.md
@@ -84,7 +84,7 @@ time="2015-03-26T01:27:38-04:00" level=fatal method=github.com/sirupsen/arcticcr
 ```
 Note that this does add measurable overhead - the cost will depend on the version of Go, but is
 between 20 and 40% in recent tests with 1.6 and 1.7.  You can validate this in your
-environment via benchmarks:
+environment via benchmarks: 
 ```
 go test -bench=.*CallerTracing
 ```
diff --git a/test/tools/vendor/github.com/sirupsen/logrus/appveyor.yml b/test/tools/vendor/github.com/sirupsen/logrus/appveyor.yml
index 1d4d64201..96c2ce15f 100644
--- a/test/tools/vendor/github.com/sirupsen/logrus/appveyor.yml
+++ b/test/tools/vendor/github.com/sirupsen/logrus/appveyor.yml
@@ -1,14 +1,14 @@
 version: "{build}"

 platform: x64

 clone_folder: c:\gopath\src\github.com\sirupsen\logrus

-environment:

+environment:  

   GOPATH: c:\gopath

-branches:

+branches:  

   only:

     - master

-install:

+install:  

   - set PATH=%GOPATH%\bin;c:\go\bin;%PATH%

   - go version

-build_script:

+build_script:  

   - go get -t

   - go test

diff --git a/test/tools/vendor/github.com/sirupsen/logrus/terminal_check_bsd.go b/test/tools/vendor/github.com/sirupsen/logrus/terminal_check_bsd.go
index ff6ff7b99..3c4f43f91 100644
--- a/test/tools/vendor/github.com/sirupsen/logrus/terminal_check_bsd.go
+++ b/test/tools/vendor/github.com/sirupsen/logrus/terminal_check_bsd.go
@@ -10,3 +10,4 @@ func isTerminal(fd int) bool {
 	_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
 	return err == nil
 }
+
diff --git a/test/tools/vendor/github.com/sirupsen/logrus/terminal_check_unix.go b/test/tools/vendor/github.com/sirupsen/logrus/terminal_check_unix.go
index 163c468d5..355dc966f 100644
--- a/test/tools/vendor/github.com/sirupsen/logrus/terminal_check_unix.go
+++ b/test/tools/vendor/github.com/sirupsen/logrus/terminal_check_unix.go
@@ -10,3 +10,4 @@ func isTerminal(fd int) bool {
 	_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
 	return err == nil
 }
+
diff --git a/test/tools/vendor/github.com/vbatts/git-validation/README.md b/test/tools/vendor/github.com/vbatts/git-validation/README.md
index 000116e89..354276e02 100644
--- a/test/tools/vendor/github.com/vbatts/git-validation/README.md
+++ b/test/tools/vendor/github.com/vbatts/git-validation/README.md
@@ -73,7 +73,7 @@ vbatts@valse ~/src/vb/git-validation (master) $ git-validation -v
 
 Here's a failure:
 ```console
-vbatts@valse ~/src/vb/git-validation (master) $ git-validation
+vbatts@valse ~/src/vb/git-validation (master) $ git-validation 
  * 49f51a8 "README: adding install and usage" ... FAIL
   - FAIL - does not have a valid DCO
  * d614ccf "*: run tests in a runner" ... PASS
@@ -103,3 +103,4 @@ See [`./rules/`](./rules/).
 Feel free to contribute more.
 
 Otherwise, by using `validate` package API directly, rules can be handed directly to the `validate.Runner`.
+
diff --git a/test/tools/vendor/golang.org/x/mod/module/module.go b/test/tools/vendor/golang.org/x/mod/module/module.go
index 355b5a456..c26d1d29e 100644
--- a/test/tools/vendor/golang.org/x/mod/module/module.go
+++ b/test/tools/vendor/golang.org/x/mod/module/module.go
@@ -15,7 +15,7 @@
 // but additional checking functions, most notably Check, verify that
 // a particular path, version pair is valid.
 //
-// Escaped Paths
+// # Escaped Paths
 //
 // Module paths appear as substrings of file system paths
 // (in the download cache) and of web server URLs in the proxy protocol.
@@ -55,7 +55,7 @@
 // Import paths have never allowed exclamation marks, so there is no
 // need to define how to escape a literal !.
 //
-// Unicode Restrictions
+// # Unicode Restrictions
 //
 // Today, paths are disallowed from using Unicode.
 //
@@ -102,9 +102,9 @@ import (
 	"strings"
 	"unicode"
 	"unicode/utf8"
+	"errors"
 
 	"golang.org/x/mod/semver"
-	errors "golang.org/x/xerrors"
 )
 
 // A Version (for clients, a module.Version) is defined by a module path and version pair.
diff --git a/test/tools/vendor/golang.org/x/tools/cmd/goimports/doc.go b/test/tools/vendor/golang.org/x/tools/cmd/goimports/doc.go
index 5a5b9005f..18a3ad448 100644
--- a/test/tools/vendor/golang.org/x/tools/cmd/goimports/doc.go
+++ b/test/tools/vendor/golang.org/x/tools/cmd/goimports/doc.go
@@ -3,29 +3,33 @@
 // license that can be found in the LICENSE file.
 
 /*
-
 Command goimports updates your Go import lines,
 adding missing ones and removing unreferenced ones.
 
-     $ go install golang.org/x/tools/cmd/goimports@latest
+	$ go install golang.org/x/tools/cmd/goimports@latest
 
 In addition to fixing imports, goimports also formats
 your code in the same style as gofmt so it can be used
 as a replacement for your editor's gofmt-on-save hook.
 
 For emacs, make sure you have the latest go-mode.el:
-   https://github.com/dominikh/go-mode.el
+
+	https://github.com/dominikh/go-mode.el
+
 Then in your .emacs file:
-   (setq gofmt-command "goimports")
-   (add-hook 'before-save-hook 'gofmt-before-save)
+
+	(setq gofmt-command "goimports")
+	(add-hook 'before-save-hook 'gofmt-before-save)
 
 For vim, set "gofmt_command" to "goimports":
-    https://golang.org/change/39c724dd7f252
-    https://golang.org/wiki/IDEsAndTextEditorPlugins
-    etc
+
+	https://golang.org/change/39c724dd7f252
+	https://golang.org/wiki/IDEsAndTextEditorPlugins
+	etc
 
 For GoSublime, follow the steps described here:
-    http://michaelwhatcott.com/gosublime-goimports/
+
+	http://michaelwhatcott.com/gosublime-goimports/
 
 For other editors, you probably know what to do.
 
@@ -39,9 +43,8 @@ working and see what goimports is doing.
 
 File bugs or feature requests at:
 
-    https://golang.org/issues/new?title=x/tools/cmd/goimports:+
+	https://golang.org/issues/new?title=x/tools/cmd/goimports:+
 
 Happy hacking!
-
 */
 package main // import "golang.org/x/tools/cmd/goimports"
diff --git a/test/tools/vendor/golang.org/x/tools/go/ast/astutil/enclosing.go b/test/tools/vendor/golang.org/x/tools/go/ast/astutil/enclosing.go
index a5c6d6d4f..9fa5aa192 100644
--- a/test/tools/vendor/golang.org/x/tools/go/ast/astutil/enclosing.go
+++ b/test/tools/vendor/golang.org/x/tools/go/ast/astutil/enclosing.go
@@ -22,9 +22,9 @@ import (
 // additional whitespace abutting a node to be enclosed by it.
 // In this example:
 //
-//              z := x + y // add them
-//                   <-A->
-//                  <----B----->
+//	z := x + y // add them
+//	     <-A->
+//	    <----B----->
 //
 // the ast.BinaryExpr(+) node is considered to enclose interval B
 // even though its [Pos()..End()) is actually only interval A.
@@ -43,10 +43,10 @@ import (
 // interior whitespace of path[0].
 // In this example:
 //
-//              z := x + y // add them
-//                <--C-->     <---E-->
-//                  ^
-//                  D
+//	z := x + y // add them
+//	  <--C-->     <---E-->
+//	    ^
+//	    D
 //
 // intervals C, D and E are inexact.  C is contained by the
 // z-assignment statement, because it spans three of its children (:=,
@@ -54,12 +54,11 @@ import (
 // interior whitespace of the assignment.  E is considered interior
 // whitespace of the BlockStmt containing the assignment.
 //
-// Precondition: [start, end) both lie within the same file as root.
-// TODO(adonovan): return (nil, false) in this case and remove precond.
-// Requires FileSet; see loader.tokenFileContainsPos.
-//
-// Postcondition: path is never nil; it always contains at least 'root'.
-//
+// The resulting path is never empty; it always contains at least the
+// 'root' *ast.File.  Ideally PathEnclosingInterval would reject
+// intervals that lie wholly or partially outside the range of the
+// file, but unfortunately ast.File records only the token.Pos of
+// the 'package' keyword, but not of the start of the file itself.
 func PathEnclosingInterval(root *ast.File, start, end token.Pos) (path []ast.Node, exact bool) {
 	// fmt.Printf("EnclosingInterval %d %d\n", start, end) // debugging
 
@@ -135,6 +134,7 @@ func PathEnclosingInterval(root *ast.File, start, end token.Pos) (path []ast.Nod
 		return false // inexact: overlaps multiple children
 	}
 
+	// Ensure [start,end) is nondecreasing.
 	if start > end {
 		start, end = end, start
 	}
@@ -162,7 +162,6 @@ func PathEnclosingInterval(root *ast.File, start, end token.Pos) (path []ast.Nod
 // tokenNode is a dummy implementation of ast.Node for a single token.
 // They are used transiently by PathEnclosingInterval but never escape
 // this package.
-//
 type tokenNode struct {
 	pos token.Pos
 	end token.Pos
@@ -183,7 +182,6 @@ func tok(pos token.Pos, len int) ast.Node {
 // childrenOf returns the direct non-nil children of ast.Node n.
 // It may include fake ast.Node implementations for bare tokens.
 // it is not safe to call (e.g.) ast.Walk on such nodes.
-//
 func childrenOf(n ast.Node) []ast.Node {
 	var children []ast.Node
 
@@ -488,7 +486,6 @@ func (sl byPos) Swap(i, j int) {
 // TODO(adonovan): in some cases (e.g. Field, FieldList, Ident,
 // StarExpr) we could be much more specific given the path to the AST
 // root.  Perhaps we should do that.
-//
 func NodeDescription(n ast.Node) string {
 	switch n := n.(type) {
 	case *ast.ArrayType:
diff --git a/test/tools/vendor/golang.org/x/tools/go/ast/astutil/imports.go b/test/tools/vendor/golang.org/x/tools/go/ast/astutil/imports.go
index 2087ceec9..18d1adb05 100644
--- a/test/tools/vendor/golang.org/x/tools/go/ast/astutil/imports.go
+++ b/test/tools/vendor/golang.org/x/tools/go/ast/astutil/imports.go
@@ -22,8 +22,11 @@ func AddImport(fset *token.FileSet, f *ast.File, path string) (added bool) {
 // If name is not empty, it is used to rename the import.
 //
 // For example, calling
+//
 //	AddNamedImport(fset, f, "pathpkg", "path")
+//
 // adds
+//
 //	import pathpkg "path"
 func AddNamedImport(fset *token.FileSet, f *ast.File, name, path string) (added bool) {
 	if imports(f, name, path) {
@@ -270,8 +273,8 @@ func DeleteNamedImport(fset *token.FileSet, f *ast.File, name, path string) (del
 			}
 			if j > 0 {
 				lastImpspec := gen.Specs[j-1].(*ast.ImportSpec)
-				lastLine := fset.Position(lastImpspec.Path.ValuePos).Line
-				line := fset.Position(impspec.Path.ValuePos).Line
+				lastLine := fset.PositionFor(lastImpspec.Path.ValuePos, false).Line
+				line := fset.PositionFor(impspec.Path.ValuePos, false).Line
 
 				// We deleted an entry but now there may be
 				// a blank line-sized hole where the import was.
diff --git a/test/tools/vendor/golang.org/x/tools/go/ast/astutil/rewrite.go b/test/tools/vendor/golang.org/x/tools/go/ast/astutil/rewrite.go
index 6d9ca23e2..f430b21b9 100644
--- a/test/tools/vendor/golang.org/x/tools/go/ast/astutil/rewrite.go
+++ b/test/tools/vendor/golang.org/x/tools/go/ast/astutil/rewrite.go
@@ -41,7 +41,6 @@ type ApplyFunc func(*Cursor) bool
 // Children are traversed in the order in which they appear in the
 // respective node's struct definition. A package's files are
 // traversed in the filenames' alphabetical order.
-//
 func Apply(root ast.Node, pre, post ApplyFunc) (result ast.Node) {
 	parent := &struct{ ast.Node }{root}
 	defer func() {
@@ -65,8 +64,8 @@ var abort = new(int) // singleton, to signal termination of Apply
 // c.Parent(), and f is the field identifier with name c.Name(),
 // the following invariants hold:
 //
-//   p.f            == c.Node()  if c.Index() <  0
-//   p.f[c.Index()] == c.Node()  if c.Index() >= 0
+//	p.f            == c.Node()  if c.Index() <  0
+//	p.f[c.Index()] == c.Node()  if c.Index() >= 0
 //
 // The methods Replace, Delete, InsertBefore, and InsertAfter
 // can be used to change the AST without disrupting Apply.
@@ -294,6 +293,9 @@ func (a *application) apply(parent ast.Node, name string, iter *iterator, n ast.
 		a.apply(n, "Fields", nil, n.Fields)
 
 	case *ast.FuncType:
+		if tparams := typeparams.ForFuncType(n); tparams != nil {
+			a.apply(n, "TypeParams", nil, tparams)
+		}
 		a.apply(n, "Params", nil, n.Params)
 		a.apply(n, "Results", nil, n.Results)
 
@@ -406,6 +408,9 @@ func (a *application) apply(parent ast.Node, name string, iter *iterator, n ast.
 	case *ast.TypeSpec:
 		a.apply(n, "Doc", nil, n.Doc)
 		a.apply(n, "Name", nil, n.Name)
+		if tparams := typeparams.ForTypeSpec(n); tparams != nil {
+			a.apply(n, "TypeParams", nil, tparams)
+		}
 		a.apply(n, "Type", nil, n.Type)
 		a.apply(n, "Comment", nil, n.Comment)
 
diff --git a/test/tools/vendor/golang.org/x/tools/internal/fastwalk/fastwalk.go b/test/tools/vendor/golang.org/x/tools/internal/fastwalk/fastwalk.go
index 9887f7e7a..798fe599b 100644
--- a/test/tools/vendor/golang.org/x/tools/internal/fastwalk/fastwalk.go
+++ b/test/tools/vendor/golang.org/x/tools/internal/fastwalk/fastwalk.go
@@ -40,12 +40,12 @@ var ErrSkipFiles = errors.New("fastwalk: skip remaining files in directory")
 // If fastWalk returns filepath.SkipDir, the directory is skipped.
 //
 // Unlike filepath.Walk:
-//   * file stat calls must be done by the user.
+//   - file stat calls must be done by the user.
 //     The only provided metadata is the file type, which does not include
 //     any permission bits.
-//   * multiple goroutines stat the filesystem concurrently. The provided
+//   - multiple goroutines stat the filesystem concurrently. The provided
 //     walkFn must be safe for concurrent use.
-//   * fastWalk can follow symlinks if walkFn returns the TraverseLink
+//   - fastWalk can follow symlinks if walkFn returns the TraverseLink
 //     sentinel error. It is the walkFn's responsibility to prevent
 //     fastWalk from going into symlink cycles.
 func Walk(root string, walkFn func(path string, typ os.FileMode) error) error {
diff --git a/test/tools/vendor/golang.org/x/tools/internal/gocommand/invoke.go b/test/tools/vendor/golang.org/x/tools/internal/gocommand/invoke.go
index f75336834..67256dc39 100644
--- a/test/tools/vendor/golang.org/x/tools/internal/gocommand/invoke.go
+++ b/test/tools/vendor/golang.org/x/tools/internal/gocommand/invoke.go
@@ -264,8 +264,10 @@ func cmdDebugStr(cmd *exec.Cmd) string {
 	env := make(map[string]string)
 	for _, kv := range cmd.Env {
 		split := strings.SplitN(kv, "=", 2)
-		k, v := split[0], split[1]
-		env[k] = v
+		if len(split) == 2 {
+			k, v := split[0], split[1]
+			env[k] = v
+		}
 	}
 
 	var args []string
diff --git a/test/tools/vendor/golang.org/x/tools/internal/gopathwalk/walk.go b/test/tools/vendor/golang.org/x/tools/internal/gopathwalk/walk.go
index 925ff5356..168405322 100644
--- a/test/tools/vendor/golang.org/x/tools/internal/gopathwalk/walk.go
+++ b/test/tools/vendor/golang.org/x/tools/internal/gopathwalk/walk.go
@@ -175,8 +175,8 @@ func (w *walker) shouldSkipDir(fi os.FileInfo, dir string) bool {
 
 // walk walks through the given path.
 func (w *walker) walk(path string, typ os.FileMode) error {
-	dir := filepath.Dir(path)
 	if typ.IsRegular() {
+		dir := filepath.Dir(path)
 		if dir == w.root.Path && (w.root.Type == RootGOROOT || w.root.Type == RootGOPATH) {
 			// Doesn't make sense to have regular files
 			// directly in your $GOPATH/src or $GOROOT/src.
@@ -209,12 +209,7 @@ func (w *walker) walk(path string, typ os.FileMode) error {
 			// Emacs noise.
 			return nil
 		}
-		fi, err := os.Lstat(path)
-		if err != nil {
-			// Just ignore it.
-			return nil
-		}
-		if w.shouldTraverse(dir, fi) {
+		if w.shouldTraverse(path) {
 			return fastwalk.ErrTraverseLink
 		}
 	}
@@ -224,13 +219,8 @@ func (w *walker) walk(path string, typ os.FileMode) error {
 // shouldTraverse reports whether the symlink fi, found in dir,
 // should be followed.  It makes sure symlinks were never visited
 // before to avoid symlink loops.
-func (w *walker) shouldTraverse(dir string, fi os.FileInfo) bool {
-	path := filepath.Join(dir, fi.Name())
-	target, err := filepath.EvalSymlinks(path)
-	if err != nil {
-		return false
-	}
-	ts, err := os.Stat(target)
+func (w *walker) shouldTraverse(path string) bool {
+	ts, err := os.Stat(path)
 	if err != nil {
 		fmt.Fprintln(os.Stderr, err)
 		return false
@@ -238,7 +228,7 @@ func (w *walker) shouldTraverse(dir string, fi os.FileInfo) bool {
 	if !ts.IsDir() {
 		return false
 	}
-	if w.shouldSkipDir(ts, dir) {
+	if w.shouldSkipDir(ts, filepath.Dir(path)) {
 		return false
 	}
 	// Check for symlink loops by statting each directory component
diff --git a/test/tools/vendor/golang.org/x/tools/internal/imports/imports.go b/test/tools/vendor/golang.org/x/tools/internal/imports/imports.go
index 25973989e..95a88383a 100644
--- a/test/tools/vendor/golang.org/x/tools/internal/imports/imports.go
+++ b/test/tools/vendor/golang.org/x/tools/internal/imports/imports.go
@@ -103,12 +103,17 @@ func ApplyFixes(fixes []*ImportFix, filename string, src []byte, opt *Options, e
 	return formatFile(fileSet, file, src, nil, opt)
 }
 
-func formatFile(fileSet *token.FileSet, file *ast.File, src []byte, adjust func(orig []byte, src []byte) []byte, opt *Options) ([]byte, error) {
-	mergeImports(fileSet, file)
-	sortImports(opt.LocalPrefix, fileSet, file)
-	imps := astutil.Imports(fileSet, file)
+// formatFile formats the file syntax tree.
+// It may mutate the token.FileSet.
+//
+// If an adjust function is provided, it is called after formatting
+// with the original source (formatFile's src parameter) and the
+// formatted file, and returns the postpocessed result.
+func formatFile(fset *token.FileSet, file *ast.File, src []byte, adjust func(orig []byte, src []byte) []byte, opt *Options) ([]byte, error) {
+	mergeImports(file)
+	sortImports(opt.LocalPrefix, fset.File(file.Pos()), file)
 	var spacesBefore []string // import paths we need spaces before
-	for _, impSection := range imps {
+	for _, impSection := range astutil.Imports(fset, file) {
 		// Within each block of contiguous imports, see if any
 		// import lines are in different group numbers. If so,
 		// we'll need to put a space between them so it's
@@ -132,7 +137,7 @@ func formatFile(fileSet *token.FileSet, file *ast.File, src []byte, adjust func(
 	printConfig := &printer.Config{Mode: printerMode, Tabwidth: opt.TabWidth}
 
 	var buf bytes.Buffer
-	err := printConfig.Fprint(&buf, fileSet, file)
+	err := printConfig.Fprint(&buf, fset, file)
 	if err != nil {
 		return nil, err
 	}
@@ -276,11 +281,11 @@ func cutSpace(b []byte) (before, middle, after []byte) {
 }
 
 // matchSpace reformats src to use the same space context as orig.
-// 1) If orig begins with blank lines, matchSpace inserts them at the beginning of src.
-// 2) matchSpace copies the indentation of the first non-blank line in orig
-//    to every non-blank line in src.
-// 3) matchSpace copies the trailing space from orig and uses it in place
-//   of src's trailing space.
+//  1. If orig begins with blank lines, matchSpace inserts them at the beginning of src.
+//  2. matchSpace copies the indentation of the first non-blank line in orig
+//     to every non-blank line in src.
+//  3. matchSpace copies the trailing space from orig and uses it in place
+//     of src's trailing space.
 func matchSpace(orig []byte, src []byte) []byte {
 	before, _, after := cutSpace(orig)
 	i := bytes.LastIndex(before, []byte{'\n'})
diff --git a/test/tools/vendor/golang.org/x/tools/internal/imports/sortimports.go b/test/tools/vendor/golang.org/x/tools/internal/imports/sortimports.go
index dc52372e4..85144db1d 100644
--- a/test/tools/vendor/golang.org/x/tools/internal/imports/sortimports.go
+++ b/test/tools/vendor/golang.org/x/tools/internal/imports/sortimports.go
@@ -3,6 +3,7 @@
 // license that can be found in the LICENSE file.
 
 // Hacked up copy of go/ast/import.go
+// Modified to use a single token.File in preference to a FileSet.
 
 package imports
 
@@ -16,7 +17,9 @@ import (
 
 // sortImports sorts runs of consecutive import lines in import blocks in f.
 // It also removes duplicate imports when it is possible to do so without data loss.
-func sortImports(localPrefix string, fset *token.FileSet, f *ast.File) {
+//
+// It may mutate the token.File.
+func sortImports(localPrefix string, tokFile *token.File, f *ast.File) {
 	for i, d := range f.Decls {
 		d, ok := d.(*ast.GenDecl)
 		if !ok || d.Tok != token.IMPORT {
@@ -39,21 +42,21 @@ func sortImports(localPrefix string, fset *token.FileSet, f *ast.File) {
 		i := 0
 		specs := d.Specs[:0]
 		for j, s := range d.Specs {
-			if j > i && fset.Position(s.Pos()).Line > 1+fset.Position(d.Specs[j-1].End()).Line {
+			if j > i && tokFile.Line(s.Pos()) > 1+tokFile.Line(d.Specs[j-1].End()) {
 				// j begins a new run.  End this one.
-				specs = append(specs, sortSpecs(localPrefix, fset, f, d.Specs[i:j])...)
+				specs = append(specs, sortSpecs(localPrefix, tokFile, f, d.Specs[i:j])...)
 				i = j
 			}
 		}
-		specs = append(specs, sortSpecs(localPrefix, fset, f, d.Specs[i:])...)
+		specs = append(specs, sortSpecs(localPrefix, tokFile, f, d.Specs[i:])...)
 		d.Specs = specs
 
 		// Deduping can leave a blank line before the rparen; clean that up.
 		if len(d.Specs) > 0 {
 			lastSpec := d.Specs[len(d.Specs)-1]
-			lastLine := fset.Position(lastSpec.Pos()).Line
-			if rParenLine := fset.Position(d.Rparen).Line; rParenLine > lastLine+1 {
-				fset.File(d.Rparen).MergeLine(rParenLine - 1)
+			lastLine := tokFile.PositionFor(lastSpec.Pos(), false).Line
+			if rParenLine := tokFile.PositionFor(d.Rparen, false).Line; rParenLine > lastLine+1 {
+				tokFile.MergeLine(rParenLine - 1) // has side effects!
 			}
 		}
 	}
@@ -62,7 +65,7 @@ func sortImports(localPrefix string, fset *token.FileSet, f *ast.File) {
 // mergeImports merges all the import declarations into the first one.
 // Taken from golang.org/x/tools/ast/astutil.
 // This does not adjust line numbers properly
-func mergeImports(fset *token.FileSet, f *ast.File) {
+func mergeImports(f *ast.File) {
 	if len(f.Decls) <= 1 {
 		return
 	}
@@ -144,7 +147,9 @@ type posSpan struct {
 	End   token.Pos
 }
 
-func sortSpecs(localPrefix string, fset *token.FileSet, f *ast.File, specs []ast.Spec) []ast.Spec {
+// sortSpecs sorts the import specs within each import decl.
+// It may mutate the token.File.
+func sortSpecs(localPrefix string, tokFile *token.File, f *ast.File, specs []ast.Spec) []ast.Spec {
 	// Can't short-circuit here even if specs are already sorted,
 	// since they might yet need deduplication.
 	// A lone import, however, may be safely ignored.
@@ -160,7 +165,7 @@ func sortSpecs(localPrefix string, fset *token.FileSet, f *ast.File, specs []ast
 
 	// Identify comments in this range.
 	// Any comment from pos[0].Start to the final line counts.
-	lastLine := fset.Position(pos[len(pos)-1].End).Line
+	lastLine := tokFile.Line(pos[len(pos)-1].End)
 	cstart := len(f.Comments)
 	cend := len(f.Comments)
 	for i, g := range f.Comments {
@@ -170,7 +175,7 @@ func sortSpecs(localPrefix string, fset *token.FileSet, f *ast.File, specs []ast
 		if i < cstart {
 			cstart = i
 		}
-		if fset.Position(g.End()).Line > lastLine {
+		if tokFile.Line(g.End()) > lastLine {
 			cend = i
 			break
 		}
@@ -203,7 +208,7 @@ func sortSpecs(localPrefix string, fset *token.FileSet, f *ast.File, specs []ast
 			deduped = append(deduped, s)
 		} else {
 			p := s.Pos()
-			fset.File(p).MergeLine(fset.Position(p).Line)
+			tokFile.MergeLine(tokFile.Line(p)) // has side effects!
 		}
 	}
 	specs = deduped
@@ -234,21 +239,21 @@ func sortSpecs(localPrefix string, fset *token.FileSet, f *ast.File, specs []ast
 
 	// Fixup comments can insert blank lines, because import specs are on different lines.
 	// We remove those blank lines here by merging import spec to the first import spec line.
-	firstSpecLine := fset.Position(specs[0].Pos()).Line
+	firstSpecLine := tokFile.Line(specs[0].Pos())
 	for _, s := range specs[1:] {
 		p := s.Pos()
-		line := fset.File(p).Line(p)
+		line := tokFile.Line(p)
 		for previousLine := line - 1; previousLine >= firstSpecLine; {
 			// MergeLine can panic. Avoid the panic at the cost of not removing the blank line
 			// golang/go#50329
-			if previousLine > 0 && previousLine < fset.File(p).LineCount() {
-				fset.File(p).MergeLine(previousLine)
+			if previousLine > 0 && previousLine < tokFile.LineCount() {
+				tokFile.MergeLine(previousLine) // has side effects!
 				previousLine--
 			} else {
 				// try to gather some data to diagnose how this could happen
 				req := "Please report what the imports section of your go file looked like."
 				log.Printf("panic avoided: first:%d line:%d previous:%d max:%d. %s",
-					firstSpecLine, line, previousLine, fset.File(p).LineCount(), req)
+					firstSpecLine, line, previousLine, tokFile.LineCount(), req)
 			}
 		}
 	}
diff --git a/test/tools/vendor/golang.org/x/tools/internal/imports/zstdlib.go b/test/tools/vendor/golang.org/x/tools/internal/imports/zstdlib.go
index 7de2be9b4..437fbb78d 100644
--- a/test/tools/vendor/golang.org/x/tools/internal/imports/zstdlib.go
+++ b/test/tools/vendor/golang.org/x/tools/internal/imports/zstdlib.go
@@ -88,6 +88,7 @@ var stdlib = map[string][]string{
 		"ContainsAny",
 		"ContainsRune",
 		"Count",
+		"Cut",
 		"Equal",
 		"EqualFold",
 		"ErrTooLarge",
@@ -711,6 +712,11 @@ var stdlib = map[string][]string{
 		"ValueConverter",
 		"Valuer",
 	},
+	"debug/buildinfo": []string{
+		"BuildInfo",
+		"Read",
+		"ReadFile",
+	},
 	"debug/dwarf": []string{
 		"AddrType",
 		"ArrayType",
@@ -1944,6 +1950,7 @@ var stdlib = map[string][]string{
 		"R_PPC64_REL24_NOTOC",
 		"R_PPC64_REL32",
 		"R_PPC64_REL64",
+		"R_PPC64_RELATIVE",
 		"R_PPC64_SECTOFF_DS",
 		"R_PPC64_SECTOFF_LO_DS",
 		"R_PPC64_TLS",
@@ -2547,6 +2554,7 @@ var stdlib = map[string][]string{
 		"Symbol",
 	},
 	"debug/plan9obj": []string{
+		"ErrNoSymbols",
 		"File",
 		"FileHeader",
 		"Magic386",
@@ -2906,6 +2914,7 @@ var stdlib = map[string][]string{
 		"Importer",
 		"IncDecStmt",
 		"IndexExpr",
+		"IndexListExpr",
 		"Inspect",
 		"InterfaceType",
 		"IsExported",
@@ -3179,6 +3188,7 @@ var stdlib = map[string][]string{
 		"SUB",
 		"SUB_ASSIGN",
 		"SWITCH",
+		"TILDE",
 		"TYPE",
 		"Token",
 		"UnaryPrec",
@@ -3187,6 +3197,7 @@ var stdlib = map[string][]string{
 		"XOR_ASSIGN",
 	},
 	"go/types": []string{
+		"ArgumentError",
 		"Array",
 		"AssertableTo",
 		"AssignableTo",
@@ -3205,6 +3216,7 @@ var stdlib = map[string][]string{
 		"Complex64",
 		"Config",
 		"Const",
+		"Context",
 		"ConvertibleTo",
 		"DefPredeclaredTestFuncs",
 		"Default",
@@ -3224,6 +3236,8 @@ var stdlib = map[string][]string{
 		"ImporterFrom",
 		"Info",
 		"Initializer",
+		"Instance",
+		"Instantiate",
 		"Int",
 		"Int16",
 		"Int32",
@@ -3254,6 +3268,7 @@ var stdlib = map[string][]string{
 		"NewChan",
 		"NewChecker",
 		"NewConst",
+		"NewContext",
 		"NewField",
 		"NewFunc",
 		"NewInterface",
@@ -3268,10 +3283,14 @@ var stdlib = map[string][]string{
 		"NewPointer",
 		"NewScope",
 		"NewSignature",
+		"NewSignatureType",
 		"NewSlice",
 		"NewStruct",
+		"NewTerm",
 		"NewTuple",
 		"NewTypeName",
+		"NewTypeParam",
+		"NewUnion",
 		"NewVar",
 		"Nil",
 		"Object",
@@ -3296,11 +3315,15 @@ var stdlib = map[string][]string{
 		"StdSizes",
 		"String",
 		"Struct",
+		"Term",
 		"Tuple",
 		"Typ",
 		"Type",
 		"TypeAndValue",
+		"TypeList",
 		"TypeName",
+		"TypeParam",
+		"TypeParamList",
 		"TypeString",
 		"Uint",
 		"Uint16",
@@ -3308,6 +3331,7 @@ var stdlib = map[string][]string{
 		"Uint64",
 		"Uint8",
 		"Uintptr",
+		"Union",
 		"Universe",
 		"Unsafe",
 		"UnsafePointer",
@@ -4080,9 +4104,11 @@ var stdlib = map[string][]string{
 		"SRV",
 		"SplitHostPort",
 		"TCPAddr",
+		"TCPAddrFromAddrPort",
 		"TCPConn",
 		"TCPListener",
 		"UDPAddr",
+		"UDPAddrFromAddrPort",
 		"UDPConn",
 		"UnixAddr",
 		"UnixConn",
@@ -4142,6 +4168,7 @@ var stdlib = map[string][]string{
 		"ListenAndServe",
 		"ListenAndServeTLS",
 		"LocalAddrContextKey",
+		"MaxBytesHandler",
 		"MaxBytesReader",
 		"MethodConnect",
 		"MethodDelete",
@@ -4338,6 +4365,25 @@ var stdlib = map[string][]string{
 		"ParseDate",
 		"ReadMessage",
 	},
+	"net/netip": []string{
+		"Addr",
+		"AddrFrom16",
+		"AddrFrom4",
+		"AddrFromSlice",
+		"AddrPort",
+		"AddrPortFrom",
+		"IPv4Unspecified",
+		"IPv6LinkLocalAllNodes",
+		"IPv6Unspecified",
+		"MustParseAddr",
+		"MustParseAddrPort",
+		"MustParsePrefix",
+		"ParseAddr",
+		"ParseAddrPort",
+		"ParsePrefix",
+		"Prefix",
+		"PrefixFrom",
+	},
 	"net/rpc": []string{
 		"Accept",
 		"Call",
@@ -4641,6 +4687,8 @@ var stdlib = map[string][]string{
 		"Method",
 		"New",
 		"NewAt",
+		"Pointer",
+		"PointerTo",
 		"Ptr",
 		"PtrTo",
 		"RecvDir",
@@ -4819,9 +4867,11 @@ var stdlib = map[string][]string{
 	},
 	"runtime/debug": []string{
 		"BuildInfo",
+		"BuildSetting",
 		"FreeOSMemory",
 		"GCStats",
 		"Module",
+		"ParseBuildInfo",
 		"PrintStack",
 		"ReadBuildInfo",
 		"ReadGCStats",
@@ -4939,11 +4989,13 @@ var stdlib = map[string][]string{
 	},
 	"strings": []string{
 		"Builder",
+		"Clone",
 		"Compare",
 		"Contains",
 		"ContainsAny",
 		"ContainsRune",
 		"Count",
+		"Cut",
 		"EqualFold",
 		"Fields",
 		"FieldsFunc",
@@ -9793,6 +9845,7 @@ var stdlib = map[string][]string{
 		"Syscall18",
 		"Syscall6",
 		"Syscall9",
+		"SyscallN",
 		"Sysctl",
 		"SysctlUint32",
 		"Sysctlnode",
@@ -10202,7 +10255,6 @@ var stdlib = map[string][]string{
 		"Value",
 		"ValueError",
 		"ValueOf",
-		"Wrapper",
 	},
 	"testing": []string{
 		"AllocsPerRun",
@@ -10213,9 +10265,11 @@ var stdlib = map[string][]string{
 		"CoverBlock",
 		"CoverMode",
 		"Coverage",
+		"F",
 		"Init",
 		"InternalBenchmark",
 		"InternalExample",
+		"InternalFuzzTarget",
 		"InternalTest",
 		"M",
 		"Main",
@@ -10313,9 +10367,11 @@ var stdlib = map[string][]string{
 		"ActionNode",
 		"BoolNode",
 		"BranchNode",
+		"BreakNode",
 		"ChainNode",
 		"CommandNode",
 		"CommentNode",
+		"ContinueNode",
 		"DotNode",
 		"FieldNode",
 		"IdentifierNode",
@@ -10329,9 +10385,11 @@ var stdlib = map[string][]string{
 		"Node",
 		"NodeAction",
 		"NodeBool",
+		"NodeBreak",
 		"NodeChain",
 		"NodeCommand",
 		"NodeComment",
+		"NodeContinue",
 		"NodeDot",
 		"NodeField",
 		"NodeIdentifier",
@@ -10727,6 +10785,7 @@ var stdlib = map[string][]string{
 		"IsSurrogate",
 	},
 	"unicode/utf8": []string{
+		"AppendRune",
 		"DecodeLastRune",
 		"DecodeLastRuneInString",
 		"DecodeRune",
diff --git a/test/tools/vendor/golang.org/x/tools/internal/typeparams/common.go b/test/tools/vendor/golang.org/x/tools/internal/typeparams/common.go
index ab6b30b83..25a1426d3 100644
--- a/test/tools/vendor/golang.org/x/tools/internal/typeparams/common.go
+++ b/test/tools/vendor/golang.org/x/tools/internal/typeparams/common.go
@@ -16,11 +16,10 @@
 // Additionally, this package contains common utilities for working with the
 // new generic constructs, to supplement the standard library APIs. Notably,
 // the StructuralTerms API computes a minimal representation of the structural
-// restrictions on a type parameter. In the future, this API may be available
-// from go/types.
+// restrictions on a type parameter.
 //
-// See the example/README.md for a more detailed guide on how to update tools
-// to support generics.
+// An external version of these APIs is available in the
+// golang.org/x/exp/typeparams module.
 package typeparams
 
 import (
@@ -121,15 +120,15 @@ func OriginMethod(fn *types.Func) *types.Func {
 //
 // For example, consider the following type declarations:
 //
-//  type Interface[T any] interface {
-//  	Accept(T)
-//  }
+//	type Interface[T any] interface {
+//		Accept(T)
+//	}
 //
-//  type Container[T any] struct {
-//  	Element T
-//  }
+//	type Container[T any] struct {
+//		Element T
+//	}
 //
-//  func (c Container[T]) Accept(t T) { c.Element = t }
+//	func (c Container[T]) Accept(t T) { c.Element = t }
 //
 // In this case, GenericAssignableTo reports that instantiations of Container
 // are assignable to the corresponding instantiation of Interface.
diff --git a/test/tools/vendor/golang.org/x/tools/internal/typeparams/coretype.go b/test/tools/vendor/golang.org/x/tools/internal/typeparams/coretype.go
new file mode 100644
index 000000000..993135ec9
--- /dev/null
+++ b/test/tools/vendor/golang.org/x/tools/internal/typeparams/coretype.go
@@ -0,0 +1,122 @@
+// Copyright 2022 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 typeparams
+
+import (
+	"go/types"
+)
+
+// CoreType returns the core type of T or nil if T does not have a core type.
+//
+// See https://go.dev/ref/spec#Core_types for the definition of a core type.
+func CoreType(T types.Type) types.Type {
+	U := T.Underlying()
+	if _, ok := U.(*types.Interface); !ok {
+		return U // for non-interface types,
+	}
+
+	terms, err := _NormalTerms(U)
+	if len(terms) == 0 || err != nil {
+		// len(terms) -> empty type set of interface.
+		// err != nil => U is invalid, exceeds complexity bounds, or has an empty type set.
+		return nil // no core type.
+	}
+
+	U = terms[0].Type().Underlying()
+	var identical int // i in [0,identical) => Identical(U, terms[i].Type().Underlying())
+	for identical = 1; identical < len(terms); identical++ {
+		if !types.Identical(U, terms[identical].Type().Underlying()) {
+			break
+		}
+	}
+
+	if identical == len(terms) {
+		// https://go.dev/ref/spec#Core_types
+		// "There is a single type U which is the underlying type of all types in the type set of T"
+		return U
+	}
+	ch, ok := U.(*types.Chan)
+	if !ok {
+		return nil // no core type as identical < len(terms) and U is not a channel.
+	}
+	// https://go.dev/ref/spec#Core_types
+	// "the type chan E if T contains only bidirectional channels, or the type chan<- E or
+	// <-chan E depending on the direction of the directional channels present."
+	for chans := identical; chans < len(terms); chans++ {
+		curr, ok := terms[chans].Type().Underlying().(*types.Chan)
+		if !ok {
+			return nil
+		}
+		if !types.Identical(ch.Elem(), curr.Elem()) {
+			return nil // channel elements are not identical.
+		}
+		if ch.Dir() == types.SendRecv {
+			// ch is bidirectional. We can safely always use curr's direction.
+			ch = curr
+		} else if curr.Dir() != types.SendRecv && ch.Dir() != curr.Dir() {
+			// ch and curr are not bidirectional and not the same direction.
+			return nil
+		}
+	}
+	return ch
+}
+
+// _NormalTerms returns a slice of terms representing the normalized structural
+// type restrictions of a type, if any.
+//
+// For all types other than *types.TypeParam, *types.Interface, and
+// *types.Union, this is just a single term with Tilde() == false and
+// Type() == typ. For *types.TypeParam, *types.Interface, and *types.Union, see
+// below.
+//
+// Structural type restrictions of a type parameter are created via
+// non-interface types embedded in its constraint interface (directly, or via a
+// chain of interface embeddings). For example, in the declaration type
+// T[P interface{~int; m()}] int the structural restriction of the type
+// parameter P is ~int.
+//
+// With interface embedding and unions, the specification of structural type
+// restrictions may be arbitrarily complex. For example, consider the
+// following:
+//
+//  type A interface{ ~string|~[]byte }
+//
+//  type B interface{ int|string }
+//
+//  type C interface { ~string|~int }
+//
+//  type T[P interface{ A|B; C }] int
+//
+// In this example, the structural type restriction of P is ~string|int: A|B
+// expands to ~string|~[]byte|int|string, which reduces to ~string|~[]byte|int,
+// which when intersected with C (~string|~int) yields ~string|int.
+//
+// _NormalTerms computes these expansions and reductions, producing a
+// "normalized" form of the embeddings. A structural restriction is normalized
+// if it is a single union containing no interface terms, and is minimal in the
+// sense that removing any term changes the set of types satisfying the
+// constraint. It is left as a proof for the reader that, modulo sorting, there
+// is exactly one such normalized form.
+//
+// Because the minimal representation always takes this form, _NormalTerms
+// returns a slice of tilde terms corresponding to the terms of the union in
+// the normalized structural restriction. An error is returned if the type is
+// invalid, exceeds complexity bounds, or has an empty type set. In the latter
+// case, _NormalTerms returns ErrEmptyTypeSet.
+//
+// _NormalTerms makes no guarantees about the order of terms, except that it
+// is deterministic.
+func _NormalTerms(typ types.Type) ([]*Term, error) {
+	switch typ := typ.(type) {
+	case *TypeParam:
+		return StructuralTerms(typ)
+	case *Union:
+		return UnionTermSet(typ)
+	case *types.Interface:
+		return InterfaceTermSet(typ)
+	default:
+		return []*Term{NewTerm(false, typ)}, nil
+	}
+}
diff --git a/test/tools/vendor/golang.org/x/tools/internal/typeparams/normalize.go b/test/tools/vendor/golang.org/x/tools/internal/typeparams/normalize.go
index 090f142a5..9c631b651 100644
--- a/test/tools/vendor/golang.org/x/tools/internal/typeparams/normalize.go
+++ b/test/tools/vendor/golang.org/x/tools/internal/typeparams/normalize.go
@@ -24,20 +24,22 @@ var ErrEmptyTypeSet = errors.New("empty type set")
 // Structural type restrictions of a type parameter are created via
 // non-interface types embedded in its constraint interface (directly, or via a
 // chain of interface embeddings). For example, in the declaration
-//  type T[P interface{~int; m()}] int
+//
+//	type T[P interface{~int; m()}] int
+//
 // the structural restriction of the type parameter P is ~int.
 //
 // With interface embedding and unions, the specification of structural type
 // restrictions may be arbitrarily complex. For example, consider the
 // following:
 //
-//  type A interface{ ~string|~[]byte }
+//	type A interface{ ~string|~[]byte }
 //
-//  type B interface{ int|string }
+//	type B interface{ int|string }
 //
-//  type C interface { ~string|~int }
+//	type C interface { ~string|~int }
 //
-//  type T[P interface{ A|B; C }] int
+//	type T[P interface{ A|B; C }] int
 //
 // In this example, the structural type restriction of P is ~string|int: A|B
 // expands to ~string|~[]byte|int|string, which reduces to ~string|~[]byte|int,
diff --git a/test/tools/vendor/golang.org/x/tools/internal/typeparams/termlist.go b/test/tools/vendor/golang.org/x/tools/internal/typeparams/termlist.go
index 10857d504..933106a23 100644
--- a/test/tools/vendor/golang.org/x/tools/internal/typeparams/termlist.go
+++ b/test/tools/vendor/golang.org/x/tools/internal/typeparams/termlist.go
@@ -97,15 +97,6 @@ func (xl termlist) norm() termlist {
 	return rl
 }
 
-// If the type set represented by xl is specified by a single (non-𝓤) term,
-// structuralType returns that type. Otherwise it returns nil.
-func (xl termlist) structuralType() types.Type {
-	if nl := xl.norm(); len(nl) == 1 {
-		return nl[0].typ // if nl.isAll() then typ is nil, which is ok
-	}
-	return nil
-}
-
 // union returns the union xl ∪ yl.
 func (xl termlist) union(yl termlist) termlist {
 	return append(xl, yl...).norm()
diff --git a/test/tools/vendor/golang.org/x/xerrors/LICENSE b/test/tools/vendor/golang.org/x/xerrors/LICENSE
deleted file mode 100644
index e4a47e17f..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/LICENSE
+++ /dev/null
@@ -1,27 +0,0 @@
-Copyright (c) 2019 The Go Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-   * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-   * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/test/tools/vendor/golang.org/x/xerrors/PATENTS b/test/tools/vendor/golang.org/x/xerrors/PATENTS
deleted file mode 100644
index 733099041..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/PATENTS
+++ /dev/null
@@ -1,22 +0,0 @@
-Additional IP Rights Grant (Patents)
-
-"This implementation" means the copyrightable works distributed by
-Google as part of the Go project.
-
-Google hereby grants to You a perpetual, worldwide, non-exclusive,
-no-charge, royalty-free, irrevocable (except as stated in this section)
-patent license to make, have made, use, offer to sell, sell, import,
-transfer and otherwise run, modify and propagate the contents of this
-implementation of Go, where such license applies only to those patent
-claims, both currently owned or controlled by Google and acquired in
-the future, licensable by Google that are necessarily infringed by this
-implementation of Go.  This grant does not include claims that would be
-infringed only as a consequence of further modification of this
-implementation.  If you or your agent or exclusive licensee institute or
-order or agree to the institution of patent litigation against any
-entity (including a cross-claim or counterclaim in a lawsuit) alleging
-that this implementation of Go or any code incorporated within this
-implementation of Go constitutes direct or contributory patent
-infringement, or inducement of patent infringement, then any patent
-rights granted to you under this License for this implementation of Go
-shall terminate as of the date such litigation is filed.
diff --git a/test/tools/vendor/golang.org/x/xerrors/README b/test/tools/vendor/golang.org/x/xerrors/README
deleted file mode 100644
index aac7867a5..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/README
+++ /dev/null
@@ -1,2 +0,0 @@
-This repository holds the transition packages for the new Go 1.13 error values.
-See golang.org/design/29934-error-values.
diff --git a/test/tools/vendor/golang.org/x/xerrors/adaptor.go b/test/tools/vendor/golang.org/x/xerrors/adaptor.go
deleted file mode 100644
index 4317f2483..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/adaptor.go
+++ /dev/null
@@ -1,193 +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 (
-	"bytes"
-	"fmt"
-	"io"
-	"reflect"
-	"strconv"
-)
-
-// FormatError calls the FormatError method of f with an errors.Printer
-// configured according to s and verb, and writes the result to s.
-func FormatError(f Formatter, s fmt.State, verb rune) {
-	// Assuming this function is only called from the Format method, and given
-	// that FormatError takes precedence over Format, it cannot be called from
-	// any package that supports errors.Formatter. It is therefore safe to
-	// disregard that State may be a specific printer implementation and use one
-	// of our choice instead.
-
-	// limitations: does not support printing error as Go struct.
-
-	var (
-		sep    = " " // separator before next error
-		p      = &state{State: s}
-		direct = true
-	)
-
-	var err error = f
-
-	switch verb {
-	// Note that this switch must match the preference order
-	// for ordinary string printing (%#v before %+v, and so on).
-
-	case 'v':
-		if s.Flag('#') {
-			if stringer, ok := err.(fmt.GoStringer); ok {
-				io.WriteString(&p.buf, stringer.GoString())
-				goto exit
-			}
-			// proceed as if it were %v
-		} else if s.Flag('+') {
-			p.printDetail = true
-			sep = "\n  - "
-		}
-	case 's':
-	case 'q', 'x', 'X':
-		// Use an intermediate buffer in the rare cases that precision,
-		// truncation, or one of the alternative verbs (q, x, and X) are
-		// specified.
-		direct = false
-
-	default:
-		p.buf.WriteString("%!")
-		p.buf.WriteRune(verb)
-		p.buf.WriteByte('(')
-		switch {
-		case err != nil:
-			p.buf.WriteString(reflect.TypeOf(f).String())
-		default:
-			p.buf.WriteString("<nil>")
-		}
-		p.buf.WriteByte(')')
-		io.Copy(s, &p.buf)
-		return
-	}
-
-loop:
-	for {
-		switch v := err.(type) {
-		case Formatter:
-			err = v.FormatError((*printer)(p))
-		case fmt.Formatter:
-			v.Format(p, 'v')
-			break loop
-		default:
-			io.WriteString(&p.buf, v.Error())
-			break loop
-		}
-		if err == nil {
-			break
-		}
-		if p.needColon || !p.printDetail {
-			p.buf.WriteByte(':')
-			p.needColon = false
-		}
-		p.buf.WriteString(sep)
-		p.inDetail = false
-		p.needNewline = false
-	}
-
-exit:
-	width, okW := s.Width()
-	prec, okP := s.Precision()
-
-	if !direct || (okW && width > 0) || okP {
-		// Construct format string from State s.
-		format := []byte{'%'}
-		if s.Flag('-') {
-			format = append(format, '-')
-		}
-		if s.Flag('+') {
-			format = append(format, '+')
-		}
-		if s.Flag(' ') {
-			format = append(format, ' ')
-		}
-		if okW {
-			format = strconv.AppendInt(format, int64(width), 10)
-		}
-		if okP {
-			format = append(format, '.')
-			format = strconv.AppendInt(format, int64(prec), 10)
-		}
-		format = append(format, string(verb)...)
-		fmt.Fprintf(s, string(format), p.buf.String())
-	} else {
-		io.Copy(s, &p.buf)
-	}
-}
-
-var detailSep = []byte("\n    ")
-
-// state tracks error printing state. It implements fmt.State.
-type state struct {
-	fmt.State
-	buf bytes.Buffer
-
-	printDetail bool
-	inDetail    bool
-	needColon   bool
-	needNewline bool
-}
-
-func (s *state) Write(b []byte) (n int, err error) {
-	if s.printDetail {
-		if len(b) == 0 {
-			return 0, nil
-		}
-		if s.inDetail && s.needColon {
-			s.needNewline = true
-			if b[0] == '\n' {
-				b = b[1:]
-			}
-		}
-		k := 0
-		for i, c := range b {
-			if s.needNewline {
-				if s.inDetail && s.needColon {
-					s.buf.WriteByte(':')
-					s.needColon = false
-				}
-				s.buf.Write(detailSep)
-				s.needNewline = false
-			}
-			if c == '\n' {
-				s.buf.Write(b[k:i])
-				k = i + 1
-				s.needNewline = true
-			}
-		}
-		s.buf.Write(b[k:])
-		if !s.inDetail {
-			s.needColon = true
-		}
-	} else if !s.inDetail {
-		s.buf.Write(b)
-	}
-	return len(b), nil
-}
-
-// printer wraps a state to implement an xerrors.Printer.
-type printer state
-
-func (s *printer) Print(args ...interface{}) {
-	if !s.inDetail || s.printDetail {
-		fmt.Fprint((*state)(s), args...)
-	}
-}
-
-func (s *printer) Printf(format string, args ...interface{}) {
-	if !s.inDetail || s.printDetail {
-		fmt.Fprintf((*state)(s), format, args...)
-	}
-}
-
-func (s *printer) Detail() bool {
-	s.inDetail = true
-	return s.printDetail
-}
diff --git a/test/tools/vendor/golang.org/x/xerrors/codereview.cfg b/test/tools/vendor/golang.org/x/xerrors/codereview.cfg
deleted file mode 100644
index 3f8b14b64..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/codereview.cfg
+++ /dev/null
@@ -1 +0,0 @@
-issuerepo: golang/go
diff --git a/test/tools/vendor/golang.org/x/xerrors/doc.go b/test/tools/vendor/golang.org/x/xerrors/doc.go
deleted file mode 100644
index eef99d9d5..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/doc.go
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2019 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 implements functions to manipulate errors.
-//
-// This package is based on the Go 2 proposal for error values:
-//   https://golang.org/design/29934-error-values
-//
-// These functions were incorporated into the standard library's errors package
-// in Go 1.13:
-// - Is
-// - As
-// - Unwrap
-//
-// Also, Errorf's %w verb was incorporated into fmt.Errorf.
-//
-// Use this package to get equivalent behavior in all supported Go versions.
-//
-// No other features of this package were included in Go 1.13, and at present
-// there are no plans to include any of them.
-package xerrors // import "golang.org/x/xerrors"
diff --git a/test/tools/vendor/golang.org/x/xerrors/errors.go b/test/tools/vendor/golang.org/x/xerrors/errors.go
deleted file mode 100644
index e88d3772d..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/errors.go
+++ /dev/null
@@ -1,33 +0,0 @@
-// Copyright 2011 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 "fmt"
-
-// errorString is a trivial implementation of error.
-type errorString struct {
-	s     string
-	frame Frame
-}
-
-// New returns an error that formats as the given text.
-//
-// The returned error contains a Frame set to the caller's location and
-// implements Formatter to show this information when printed with details.
-func New(text string) error {
-	return &errorString{text, Caller(1)}
-}
-
-func (e *errorString) Error() string {
-	return e.s
-}
-
-func (e *errorString) Format(s fmt.State, v rune) { FormatError(e, s, v) }
-
-func (e *errorString) FormatError(p Printer) (next error) {
-	p.Print(e.s)
-	e.frame.Format(p)
-	return nil
-}
diff --git a/test/tools/vendor/golang.org/x/xerrors/fmt.go b/test/tools/vendor/golang.org/x/xerrors/fmt.go
deleted file mode 100644
index 829862ddf..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/fmt.go
+++ /dev/null
@@ -1,187 +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 (
-	"fmt"
-	"strings"
-	"unicode"
-	"unicode/utf8"
-
-	"golang.org/x/xerrors/internal"
-)
-
-const percentBangString = "%!"
-
-// Errorf formats according to a format specifier and returns the string as a
-// value that satisfies error.
-//
-// The returned error includes the file and line number of the caller when
-// formatted with additional detail enabled. If the last argument is an error
-// the returned error's Format method will return it if the format string ends
-// with ": %s", ": %v", or ": %w". If the last argument is an error and the
-// format string ends with ": %w", the returned error implements an Unwrap
-// method returning it.
-//
-// If the format specifier includes a %w verb with an error operand in a
-// position other than at the end, the returned error will still implement an
-// Unwrap method returning the operand, but the error's Format method will not
-// return the wrapped error.
-//
-// It is invalid to include more than one %w verb or to supply it with an
-// operand that does not implement the error interface. The %w verb is otherwise
-// a synonym for %v.
-func Errorf(format string, a ...interface{}) error {
-	format = formatPlusW(format)
-	// Support a ": %[wsv]" suffix, which works well with xerrors.Formatter.
-	wrap := strings.HasSuffix(format, ": %w")
-	idx, format2, ok := parsePercentW(format)
-	percentWElsewhere := !wrap && idx >= 0
-	if !percentWElsewhere && (wrap || strings.HasSuffix(format, ": %s") || strings.HasSuffix(format, ": %v")) {
-		err := errorAt(a, len(a)-1)
-		if err == nil {
-			return &noWrapError{fmt.Sprintf(format, a...), nil, Caller(1)}
-		}
-		// TODO: this is not entirely correct. The error value could be
-		// printed elsewhere in format if it mixes numbered with unnumbered
-		// substitutions. With relatively small changes to doPrintf we can
-		// have it optionally ignore extra arguments and pass the argument
-		// list in its entirety.
-		msg := fmt.Sprintf(format[:len(format)-len(": %s")], a[:len(a)-1]...)
-		frame := Frame{}
-		if internal.EnableTrace {
-			frame = Caller(1)
-		}
-		if wrap {
-			return &wrapError{msg, err, frame}
-		}
-		return &noWrapError{msg, err, frame}
-	}
-	// Support %w anywhere.
-	// TODO: don't repeat the wrapped error's message when %w occurs in the middle.
-	msg := fmt.Sprintf(format2, a...)
-	if idx < 0 {
-		return &noWrapError{msg, nil, Caller(1)}
-	}
-	err := errorAt(a, idx)
-	if !ok || err == nil {
-		// Too many %ws or argument of %w is not an error. Approximate the Go
-		// 1.13 fmt.Errorf message.
-		return &noWrapError{fmt.Sprintf("%sw(%s)", percentBangString, msg), nil, Caller(1)}
-	}
-	frame := Frame{}
-	if internal.EnableTrace {
-		frame = Caller(1)
-	}
-	return &wrapError{msg, err, frame}
-}
-
-func errorAt(args []interface{}, i int) error {
-	if i < 0 || i >= len(args) {
-		return nil
-	}
-	err, ok := args[i].(error)
-	if !ok {
-		return nil
-	}
-	return err
-}
-
-// formatPlusW is used to avoid the vet check that will barf at %w.
-func formatPlusW(s string) string {
-	return s
-}
-
-// Return the index of the only %w in format, or -1 if none.
-// Also return a rewritten format string with %w replaced by %v, and
-// false if there is more than one %w.
-// TODO: handle "%[N]w".
-func parsePercentW(format string) (idx int, newFormat string, ok bool) {
-	// Loosely copied from golang.org/x/tools/go/analysis/passes/printf/printf.go.
-	idx = -1
-	ok = true
-	n := 0
-	sz := 0
-	var isW bool
-	for i := 0; i < len(format); i += sz {
-		if format[i] != '%' {
-			sz = 1
-			continue
-		}
-		// "%%" is not a format directive.
-		if i+1 < len(format) && format[i+1] == '%' {
-			sz = 2
-			continue
-		}
-		sz, isW = parsePrintfVerb(format[i:])
-		if isW {
-			if idx >= 0 {
-				ok = false
-			} else {
-				idx = n
-			}
-			// "Replace" the last character, the 'w', with a 'v'.
-			p := i + sz - 1
-			format = format[:p] + "v" + format[p+1:]
-		}
-		n++
-	}
-	return idx, format, ok
-}
-
-// Parse the printf verb starting with a % at s[0].
-// Return how many bytes it occupies and whether the verb is 'w'.
-func parsePrintfVerb(s string) (int, bool) {
-	// Assume only that the directive is a sequence of non-letters followed by a single letter.
-	sz := 0
-	var r rune
-	for i := 1; i < len(s); i += sz {
-		r, sz = utf8.DecodeRuneInString(s[i:])
-		if unicode.IsLetter(r) {
-			return i + sz, r == 'w'
-		}
-	}
-	return len(s), false
-}
-
-type noWrapError struct {
-	msg   string
-	err   error
-	frame Frame
-}
-
-func (e *noWrapError) Error() string {
-	return fmt.Sprint(e)
-}
-
-func (e *noWrapError) Format(s fmt.State, v rune) { FormatError(e, s, v) }
-
-func (e *noWrapError) FormatError(p Printer) (next error) {
-	p.Print(e.msg)
-	e.frame.Format(p)
-	return e.err
-}
-
-type wrapError struct {
-	msg   string
-	err   error
-	frame Frame
-}
-
-func (e *wrapError) Error() string {
-	return fmt.Sprint(e)
-}
-
-func (e *wrapError) Format(s fmt.State, v rune) { FormatError(e, s, v) }
-
-func (e *wrapError) FormatError(p Printer) (next error) {
-	p.Print(e.msg)
-	e.frame.Format(p)
-	return e.err
-}
-
-func (e *wrapError) Unwrap() error {
-	return e.err
-}
diff --git a/test/tools/vendor/golang.org/x/xerrors/format.go b/test/tools/vendor/golang.org/x/xerrors/format.go
deleted file mode 100644
index 1bc9c26b9..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/format.go
+++ /dev/null
@@ -1,34 +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
-
-// A Formatter formats error messages.
-type Formatter interface {
-	error
-
-	// FormatError prints the receiver's first error and returns the next error in
-	// the error chain, if any.
-	FormatError(p Printer) (next error)
-}
-
-// A Printer formats error messages.
-//
-// The most common implementation of Printer is the one provided by package fmt
-// during Printf (as of Go 1.13). Localization packages such as golang.org/x/text/message
-// typically provide their own implementations.
-type Printer interface {
-	// Print appends args to the message output.
-	Print(args ...interface{})
-
-	// Printf writes a formatted string.
-	Printf(format string, args ...interface{})
-
-	// Detail reports whether error detail is requested.
-	// After the first call to Detail, all text written to the Printer
-	// is formatted as additional detail, or ignored when
-	// detail has not been requested.
-	// If Detail returns false, the caller can avoid printing the detail at all.
-	Detail() bool
-}
diff --git a/test/tools/vendor/golang.org/x/xerrors/frame.go b/test/tools/vendor/golang.org/x/xerrors/frame.go
deleted file mode 100644
index 0de628ec5..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/frame.go
+++ /dev/null
@@ -1,56 +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 (
-	"runtime"
-)
-
-// A Frame contains part of a call stack.
-type Frame struct {
-	// Make room for three PCs: the one we were asked for, what it called,
-	// and possibly a PC for skipPleaseUseCallersFrames. See:
-	// https://go.googlesource.com/go/+/032678e0fb/src/runtime/extern.go#169
-	frames [3]uintptr
-}
-
-// Caller returns a Frame that describes a frame on the caller's stack.
-// The argument skip is the number of frames to skip over.
-// Caller(0) returns the frame for the caller of Caller.
-func Caller(skip int) Frame {
-	var s Frame
-	runtime.Callers(skip+1, s.frames[:])
-	return s
-}
-
-// location reports the file, line, and function of a frame.
-//
-// The returned function may be "" even if file and line are not.
-func (f Frame) location() (function, file string, line int) {
-	frames := runtime.CallersFrames(f.frames[:])
-	if _, ok := frames.Next(); !ok {
-		return "", "", 0
-	}
-	fr, ok := frames.Next()
-	if !ok {
-		return "", "", 0
-	}
-	return fr.Function, fr.File, fr.Line
-}
-
-// Format prints the stack as error detail.
-// It should be called from an error's Format implementation
-// after printing any other error detail.
-func (f Frame) Format(p Printer) {
-	if p.Detail() {
-		function, file, line := f.location()
-		if function != "" {
-			p.Printf("%s\n    ", function)
-		}
-		if file != "" {
-			p.Printf("%s:%d\n", file, line)
-		}
-	}
-}
diff --git a/test/tools/vendor/golang.org/x/xerrors/go.mod b/test/tools/vendor/golang.org/x/xerrors/go.mod
deleted file mode 100644
index 870d4f612..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/go.mod
+++ /dev/null
@@ -1,3 +0,0 @@
-module golang.org/x/xerrors
-
-go 1.11
diff --git a/test/tools/vendor/golang.org/x/xerrors/internal/internal.go b/test/tools/vendor/golang.org/x/xerrors/internal/internal.go
deleted file mode 100644
index 89f4eca5d..000000000
--- a/test/tools/vendor/golang.org/x/xerrors/internal/internal.go
+++ /dev/null
@@ -1,8 +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 internal
-
-// EnableTrace indicates whether stack information should be recorded in errors.
-var EnableTrace = true
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()
diff --git a/test/tools/vendor/modules.txt b/test/tools/vendor/modules.txt
index 462abe617..5b5cc4112 100644
--- a/test/tools/vendor/modules.txt
+++ b/test/tools/vendor/modules.txt
@@ -19,7 +19,7 @@ github.com/vbatts/git-validation/rules/dco
 github.com/vbatts/git-validation/rules/messageregexp
 github.com/vbatts/git-validation/rules/shortsubject
 github.com/vbatts/git-validation/validate
-# golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3
+# golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4
 golang.org/x/mod/internal/lazyregexp
 golang.org/x/mod/module
 golang.org/x/mod/semver
@@ -27,7 +27,7 @@ golang.org/x/mod/semver
 golang.org/x/sys/execabs
 golang.org/x/sys/internal/unsafeheader
 golang.org/x/sys/unix
-# golang.org/x/tools v0.1.10
+# golang.org/x/tools v0.1.11
 ## explicit
 golang.org/x/tools/cmd/goimports
 golang.org/x/tools/go/ast/astutil
@@ -40,6 +40,3 @@ golang.org/x/tools/internal/gocommand
 golang.org/x/tools/internal/gopathwalk
 golang.org/x/tools/internal/imports
 golang.org/x/tools/internal/typeparams
-# golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1
-golang.org/x/xerrors
-golang.org/x/xerrors/internal