diff --git a/vendor.conf b/vendor.conf
index c892276043..395411b517 100755
--- a/vendor.conf
+++ b/vendor.conf
@@ -91,7 +91,7 @@ google.golang.org/genproto 02b4e95473316948020af0b7a4f0f22c73929b0e
 google.golang.org/grpc v1.12.0
 gopkg.in/inf.v0 d2d2541c53f18d2a059457998ce2876cc8e67cbf # v0.9.1
 gopkg.in/yaml.v2 5420a8b6744d3b0345ab293f6fcba19c978f1183 # v2.2.1
-gotest.tools v2.1.0
+gotest.tools v2.2.0
 k8s.io/api kubernetes-1.11.2
 k8s.io/apimachinery kubernetes-1.11.2
 k8s.io/client-go kubernetes-1.11.2
diff --git a/vendor/gotest.tools/LICENSE b/vendor/gotest.tools/LICENSE
index d645695673..aeaa2fac3d 100644
--- a/vendor/gotest.tools/LICENSE
+++ b/vendor/gotest.tools/LICENSE
@@ -1,202 +1,13 @@
+Copyright 2018 gotest.tools authors
 
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
 
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+    http://www.apache.org/licenses/LICENSE-2.0
 
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
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-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
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-      the terms of any separate license agreement you may have executed
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-      boilerplate notice, with the fields enclosed by brackets "[]"
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-   you may not use this file except in compliance with the License.
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-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
diff --git a/vendor/gotest.tools/README.md b/vendor/gotest.tools/README.md
index f5df204315..26a2026de2 100644
--- a/vendor/gotest.tools/README.md
+++ b/vendor/gotest.tools/README.md
@@ -3,7 +3,7 @@
 A collection of packages to augment `testing` and support common patterns.
 
 [![GoDoc](https://godoc.org/gotest.tools?status.svg)](https://godoc.org/gotest.tools)
-[![CircleCI](https://circleci.com/gh/gotestyourself/gotestyourself/tree/master.svg?style=shield)](https://circleci.com/gh/gotestyourself/gotestyourself/tree/master)
+[![CircleCI](https://circleci.com/gh/gotestyourself/gotest.tools/tree/master.svg?style=shield)](https://circleci.com/gh/gotestyourself/gotest.tools/tree/master)
 [![Go Reportcard](https://goreportcard.com/badge/gotest.tools)](https://goreportcard.com/report/gotest.tools)
 
 
diff --git a/vendor/gotest.tools/assert/cmp/compare.go b/vendor/gotest.tools/assert/cmp/compare.go
index ae03749e20..cf48d887ac 100644
--- a/vendor/gotest.tools/assert/cmp/compare.go
+++ b/vendor/gotest.tools/assert/cmp/compare.go
@@ -4,6 +4,7 @@ package cmp // import "gotest.tools/assert/cmp"
 import (
 	"fmt"
 	"reflect"
+	"regexp"
 	"strings"
 
 	"github.com/google/go-cmp/cmp"
@@ -58,6 +59,39 @@ func toResult(success bool, msg string) Result {
 	return ResultFailure(msg)
 }
 
+// RegexOrPattern may be either a *regexp.Regexp or a string that is a valid
+// regexp pattern.
+type RegexOrPattern interface{}
+
+// Regexp succeeds if value v matches regular expression re.
+//
+// Example:
+//   assert.Assert(t, cmp.Regexp("^[0-9a-f]{32}$", str))
+//   r := regexp.MustCompile("^[0-9a-f]{32}$")
+//   assert.Assert(t, cmp.Regexp(r, str))
+func Regexp(re RegexOrPattern, v string) Comparison {
+	match := func(re *regexp.Regexp) Result {
+		return toResult(
+			re.MatchString(v),
+			fmt.Sprintf("value %q does not match regexp %q", v, re.String()))
+	}
+
+	return func() Result {
+		switch regex := re.(type) {
+		case *regexp.Regexp:
+			return match(regex)
+		case string:
+			re, err := regexp.Compile(regex)
+			if err != nil {
+				return ResultFailure(err.Error())
+			}
+			return match(re)
+		default:
+			return ResultFailure(fmt.Sprintf("invalid type %T for regex pattern", regex))
+		}
+	}
+}
+
 // Equal succeeds if x == y. See assert.Equal for full documentation.
 func Equal(x, y interface{}) Comparison {
 	return func() Result {
@@ -186,7 +220,7 @@ func Error(err error, message string) Comparison {
 			return ResultFailure("expected an error, got nil")
 		case err.Error() != message:
 			return ResultFailure(fmt.Sprintf(
-				"expected error %q, got %+v", message, err))
+				"expected error %q, got %s", message, formatErrorMessage(err)))
 		}
 		return ResultSuccess
 	}
@@ -201,12 +235,22 @@ func ErrorContains(err error, substring string) Comparison {
 			return ResultFailure("expected an error, got nil")
 		case !strings.Contains(err.Error(), substring):
 			return ResultFailure(fmt.Sprintf(
-				"expected error to contain %q, got %+v", substring, err))
+				"expected error to contain %q, got %s", substring, formatErrorMessage(err)))
 		}
 		return ResultSuccess
 	}
 }
 
+func formatErrorMessage(err error) string {
+	if _, ok := err.(interface {
+		Cause() error
+	}); ok {
+		return fmt.Sprintf("%q\n%+v", err, err)
+	}
+	// This error was not wrapped with github.com/pkg/errors
+	return fmt.Sprintf("%q", err)
+}
+
 // Nil succeeds if obj is a nil interface, pointer, or function.
 //
 // Use NilError() for comparing errors. Use Len(obj, 0) for comparing slices,
diff --git a/vendor/gotest.tools/assert/result.go b/vendor/gotest.tools/assert/result.go
index 3900264d0b..949d939619 100644
--- a/vendor/gotest.tools/assert/result.go
+++ b/vendor/gotest.tools/assert/result.go
@@ -70,7 +70,6 @@ func filterPrintableExpr(args []ast.Expr) []ast.Expr {
 			result[i] = starExpr.X
 			continue
 		}
-		result[i] = nil
 	}
 	return result
 }
diff --git a/vendor/gotest.tools/env/env.go b/vendor/gotest.tools/env/env.go
index ed0f189916..609d90e996 100644
--- a/vendor/gotest.tools/env/env.go
+++ b/vendor/gotest.tools/env/env.go
@@ -79,6 +79,9 @@ func ToMap(env []string) map[string]string {
 }
 
 func getParts(raw string) (string, string) {
+	if raw == "" {
+		return "", ""
+	}
 	// Environment variables on windows can begin with =
 	// http://blogs.msdn.com/b/oldnewthing/archive/2010/05/06/10008132.aspx
 	parts := strings.SplitN(raw[1:], "=", 2)
diff --git a/vendor/gotest.tools/fs/file.go b/vendor/gotest.tools/fs/file.go
index 8bf0188d2f..8322c8f444 100644
--- a/vendor/gotest.tools/fs/file.go
+++ b/vendor/gotest.tools/fs/file.go
@@ -7,6 +7,8 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"runtime"
+	"strings"
 
 	"gotest.tools/assert"
 	"gotest.tools/x/subtest"
@@ -40,7 +42,7 @@ func NewFile(t assert.TestingT, prefix string, ops ...PathOp) *File {
 	if ht, ok := t.(helperT); ok {
 		ht.Helper()
 	}
-	tempfile, err := ioutil.TempFile("", prefix+"-")
+	tempfile, err := ioutil.TempFile("", cleanPrefix(prefix)+"-")
 	assert.NilError(t, err)
 	file := &File{path: tempfile.Name()}
 	assert.NilError(t, tempfile.Close())
@@ -54,6 +56,14 @@ func NewFile(t assert.TestingT, prefix string, ops ...PathOp) *File {
 	return file
 }
 
+func cleanPrefix(prefix string) string {
+	// windows requires both / and \ are replaced
+	if runtime.GOOS == "windows" {
+		prefix = strings.Replace(prefix, string(os.PathSeparator), "-", -1)
+	}
+	return strings.Replace(prefix, "/", "-", -1)
+}
+
 // Path returns the full path to the file
 func (f *File) Path() string {
 	return f.path
@@ -76,7 +86,7 @@ func NewDir(t assert.TestingT, prefix string, ops ...PathOp) *Dir {
 	if ht, ok := t.(helperT); ok {
 		ht.Helper()
 	}
-	path, err := ioutil.TempDir("", prefix+"-")
+	path, err := ioutil.TempDir("", cleanPrefix(prefix)+"-")
 	assert.NilError(t, err)
 	dir := &Dir{path: path}
 
diff --git a/vendor/gotest.tools/fs/manifest.go b/vendor/gotest.tools/fs/manifest.go
index 00976ef19c..a98a70aaf4 100644
--- a/vendor/gotest.tools/fs/manifest.go
+++ b/vendor/gotest.tools/fs/manifest.go
@@ -24,7 +24,8 @@ type resource struct {
 
 type file struct {
 	resource
-	content io.ReadCloser
+	content             io.ReadCloser
+	ignoreCariageReturn bool
 }
 
 func (f *file) Type() string {
@@ -113,6 +114,9 @@ func getTypedResource(path string, info os.FileInfo) (dirEntry, error) {
 
 func newSymlink(path string, info os.FileInfo) (*symlink, error) {
 	target, err := os.Readlink(path)
+	if err != nil {
+		return nil, err
+	}
 	return &symlink{
 		resource: newResourceFromInfo(info),
 		target:   target,
@@ -122,6 +126,9 @@ func newSymlink(path string, info os.FileInfo) (*symlink, error) {
 func newFile(path string, info os.FileInfo) (*file, error) {
 	// TODO: defer file opening to reduce number of open FDs?
 	readCloser, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
 	return &file{
 		resource: newResourceFromInfo(info),
 		content:  readCloser,
diff --git a/vendor/gotest.tools/fs/ops.go b/vendor/gotest.tools/fs/ops.go
index ec9d11c110..a8d087c832 100644
--- a/vendor/gotest.tools/fs/ops.go
+++ b/vendor/gotest.tools/fs/ops.go
@@ -172,23 +172,35 @@ func copyDirectory(source, dest string) error {
 	for _, entry := range entries {
 		sourcePath := filepath.Join(source, entry.Name())
 		destPath := filepath.Join(dest, entry.Name())
-		if entry.IsDir() {
+		switch {
+		case entry.IsDir():
 			if err := os.Mkdir(destPath, 0755); err != nil {
 				return err
 			}
 			if err := copyDirectory(sourcePath, destPath); err != nil {
 				return err
 			}
-			continue
-		}
-		// TODO: handle symlinks
-		if err := copyFile(sourcePath, destPath); err != nil {
-			return err
+		case entry.Mode()&os.ModeSymlink != 0:
+			if err := copySymLink(sourcePath, destPath); err != nil {
+				return err
+			}
+		default:
+			if err := copyFile(sourcePath, destPath); err != nil {
+				return err
+			}
 		}
 	}
 	return nil
 }
 
+func copySymLink(source, dest string) error {
+	link, err := os.Readlink(source)
+	if err != nil {
+		return err
+	}
+	return os.Symlink(link, dest)
+}
+
 func copyFile(source, dest string) error {
 	content, err := ioutil.ReadFile(source)
 	if err != nil {
@@ -219,7 +231,7 @@ func WithSymlink(path, target string) PathOp {
 func WithHardlink(path, target string) PathOp {
 	return func(root Path) error {
 		if _, ok := root.(manifestDirectory); ok {
-			return errors.New("WithHardlink yet implemented for manifests")
+			return errors.New("WithHardlink not implemented for manifests")
 		}
 		return os.Link(filepath.Join(root.Path(), target), filepath.Join(root.Path(), path))
 	}
@@ -230,7 +242,7 @@ func WithHardlink(path, target string) PathOp {
 func WithTimestamps(atime, mtime time.Time) PathOp {
 	return func(root Path) error {
 		if _, ok := root.(manifestDirectory); ok {
-			return errors.New("WithTimestamp yet implemented for manifests")
+			return errors.New("WithTimestamp not implemented for manifests")
 		}
 		return os.Chtimes(root.Path(), atime, mtime)
 	}
diff --git a/vendor/gotest.tools/fs/path.go b/vendor/gotest.tools/fs/path.go
index baf777f0df..8ffa0a0f82 100644
--- a/vendor/gotest.tools/fs/path.go
+++ b/vendor/gotest.tools/fs/path.go
@@ -127,6 +127,15 @@ func MatchAnyFileContent(path Path) error {
 	return nil
 }
 
+// MatchContentIgnoreCarriageReturn is a PathOp that ignores cariage return
+// discrepancies.
+func MatchContentIgnoreCarriageReturn(path Path) error {
+	if m, ok := path.(*filePath); ok {
+		m.file.ignoreCariageReturn = true
+	}
+	return nil
+}
+
 const anyFile = "*"
 
 // MatchExtraFiles is a PathOp that updates a Manifest to allow a directory
diff --git a/vendor/gotest.tools/fs/report.go b/vendor/gotest.tools/fs/report.go
index 4de85a6ef7..b85bb09a75 100644
--- a/vendor/gotest.tools/fs/report.go
+++ b/vendor/gotest.tools/fs/report.go
@@ -6,6 +6,7 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"runtime"
 	"sort"
 	"strings"
 
@@ -67,6 +68,11 @@ func eqResource(x, y resource) []problem {
 	return p
 }
 
+func removeCarriageReturn(in []byte) []byte {
+	return bytes.Replace(in, []byte("\r\n"), []byte("\n"), -1)
+}
+
+// nolint: gocyclo
 func eqFile(x, y *file) []problem {
 	p := eqResource(x.resource, y.resource)
 
@@ -95,6 +101,10 @@ func eqFile(x, y *file) []problem {
 	if xErr != nil || yErr != nil {
 		return p
 	}
+	if x.ignoreCariageReturn || y.ignoreCariageReturn {
+		xContent = removeCarriageReturn(xContent)
+		yContent = removeCarriageReturn(yContent)
+	}
 
 	if !bytes.Equal(xContent, yContent) {
 		p = append(p, diffContent(xContent, yContent))
@@ -126,7 +136,13 @@ func indent(s, prefix string) string {
 
 func eqSymlink(x, y *symlink) []problem {
 	p := eqResource(x.resource, y.resource)
-	if x.target != y.target {
+	xTarget := x.target
+	yTarget := y.target
+	if runtime.GOOS == "windows" {
+		xTarget = strings.ToLower(xTarget)
+		yTarget = strings.ToLower(yTarget)
+	}
+	if xTarget != yTarget {
 		p = append(p, notEqual("target", x.target, y.target))
 	}
 	return p
diff --git a/vendor/gotest.tools/golden/golden.go b/vendor/gotest.tools/golden/golden.go
index 1804b65931..7264529900 100644
--- a/vendor/gotest.tools/golden/golden.go
+++ b/vendor/gotest.tools/golden/golden.go
@@ -98,7 +98,7 @@ func String(actual string, filename string) cmp.Comparison {
 // AssertBytes compares the actual result to the expected result in the golden
 // file. If the `-test.update-golden` flag is set then the actual content is
 // written to the golden file.
-// Returns whether the assertion was successful (true) or not (false)
+// Returns whether the assertion was successful (true) or not (false).
 // This is equivalent to assert.Check(t, Bytes(actual, filename))
 func AssertBytes(
 	t assert.TestingT,
diff --git a/vendor/gotest.tools/icmd/command.go b/vendor/gotest.tools/icmd/command.go
index 901895991a..e931ccb928 100644
--- a/vendor/gotest.tools/icmd/command.go
+++ b/vendor/gotest.tools/icmd/command.go
@@ -132,18 +132,21 @@ func (r *Result) String() string {
 	if r.Timeout {
 		timeout = " (timeout)"
 	}
+	var errString string
+	if r.Error != nil {
+		errString = "\nError:    " + r.Error.Error()
+	}
 
 	return fmt.Sprintf(`
 Command:  %s
-ExitCode: %d%s
-Error:    %v
+ExitCode: %d%s%s
 Stdout:   %v
 Stderr:   %v
 `,
 		strings.Join(r.Cmd.Args, " "),
 		r.ExitCode,
 		timeout,
-		r.Error,
+		errString,
 		r.Stdout(),
 		r.Stderr())
 }
diff --git a/vendor/gotest.tools/icmd/ops.go b/vendor/gotest.tools/icmd/ops.go
index 02b1d84023..18176eead3 100644
--- a/vendor/gotest.tools/icmd/ops.go
+++ b/vendor/gotest.tools/icmd/ops.go
@@ -1,4 +1,38 @@
 package icmd
 
+import (
+	"io"
+	"time"
+)
+
 // CmdOp is an operation which modified a Cmd structure used to execute commands
 type CmdOp func(*Cmd)
+
+// WithTimeout sets the timeout duration of the command
+func WithTimeout(timeout time.Duration) CmdOp {
+	return func(c *Cmd) {
+		c.Timeout = timeout
+	}
+}
+
+// WithEnv sets the environment variable of the command.
+// Each arguments are in the form of KEY=VALUE
+func WithEnv(env ...string) CmdOp {
+	return func(c *Cmd) {
+		c.Env = env
+	}
+}
+
+// Dir sets the working directory of the command
+func Dir(path string) CmdOp {
+	return func(c *Cmd) {
+		c.Dir = path
+	}
+}
+
+// WithStdin sets the standard input of the command to the specified reader
+func WithStdin(r io.Reader) CmdOp {
+	return func(c *Cmd) {
+		c.Stdin = r
+	}
+}
diff --git a/vendor/gotest.tools/internal/difflib/difflib.go b/vendor/gotest.tools/internal/difflib/difflib.go
index 5efa99c1d4..b6f486b9c9 100644
--- a/vendor/gotest.tools/internal/difflib/difflib.go
+++ b/vendor/gotest.tools/internal/difflib/difflib.go
@@ -1,4 +1,4 @@
-/* Package difflib is a partial port of Python difflib module.
+/*Package difflib is a partial port of Python difflib module.
 
 Original source: https://github.com/pmezard/go-difflib
 
@@ -20,12 +20,14 @@ func max(a, b int) int {
 	return b
 }
 
+// Match stores line numbers of size of match
 type Match struct {
 	A    int
 	B    int
 	Size int
 }
 
+// OpCode identifies the type of diff
 type OpCode struct {
 	Tag byte
 	I1  int
@@ -73,19 +75,20 @@ type SequenceMatcher struct {
 	opCodes        []OpCode
 }
 
+// NewMatcher returns a new SequenceMatcher
 func NewMatcher(a, b []string) *SequenceMatcher {
 	m := SequenceMatcher{autoJunk: true}
 	m.SetSeqs(a, b)
 	return &m
 }
 
-// Set two sequences to be compared.
+// SetSeqs sets two sequences to be compared.
 func (m *SequenceMatcher) SetSeqs(a, b []string) {
 	m.SetSeq1(a)
 	m.SetSeq2(b)
 }
 
-// Set the first sequence to be compared. The second sequence to be compared is
+// SetSeq1 sets the first sequence to be compared. The second sequence to be compared is
 // not changed.
 //
 // SequenceMatcher computes and caches detailed information about the second
@@ -103,7 +106,7 @@ func (m *SequenceMatcher) SetSeq1(a []string) {
 	m.opCodes = nil
 }
 
-// Set the second sequence to be compared. The first sequence to be compared is
+// SetSeq2 sets the second sequence to be compared. The first sequence to be compared is
 // not changed.
 func (m *SequenceMatcher) SetSeq2(b []string) {
 	if &b == &m.b {
@@ -129,12 +132,12 @@ func (m *SequenceMatcher) chainB() {
 	m.bJunk = map[string]struct{}{}
 	if m.IsJunk != nil {
 		junk := m.bJunk
-		for s, _ := range b2j {
+		for s := range b2j {
 			if m.IsJunk(s) {
 				junk[s] = struct{}{}
 			}
 		}
-		for s, _ := range junk {
+		for s := range junk {
 			delete(b2j, s)
 		}
 	}
@@ -149,7 +152,7 @@ func (m *SequenceMatcher) chainB() {
 				popular[s] = struct{}{}
 			}
 		}
-		for s, _ := range popular {
+		for s := range popular {
 			delete(b2j, s)
 		}
 	}
@@ -259,7 +262,7 @@ func (m *SequenceMatcher) findLongestMatch(alo, ahi, blo, bhi int) Match {
 	return Match{A: besti, B: bestj, Size: bestsize}
 }
 
-// Return list of triples describing matching subsequences.
+// GetMatchingBlocks returns a list of triples describing matching subsequences.
 //
 // Each triple is of the form (i, j, n), and means that
 // a[i:i+n] == b[j:j+n].  The triples are monotonically increasing in
@@ -323,7 +326,7 @@ func (m *SequenceMatcher) GetMatchingBlocks() []Match {
 	return m.matchingBlocks
 }
 
-// Return list of 5-tuples describing how to turn a into b.
+// GetOpCodes returns a list of 5-tuples describing how to turn a into b.
 //
 // Each tuple is of the form (tag, i1, i2, j1, j2).  The first tuple
 // has i1 == j1 == 0, and remaining tuples have i1 == the i2 from the
@@ -374,7 +377,7 @@ func (m *SequenceMatcher) GetOpCodes() []OpCode {
 	return m.opCodes
 }
 
-// Isolate change clusters by eliminating ranges with no changes.
+// GetGroupedOpCodes isolates change clusters by eliminating ranges with no changes.
 //
 // Return a generator of groups with up to n lines of context.
 // Each group is in the same format as returned by GetOpCodes().
@@ -384,7 +387,7 @@ func (m *SequenceMatcher) GetGroupedOpCodes(n int) [][]OpCode {
 	}
 	codes := m.GetOpCodes()
 	if len(codes) == 0 {
-		codes = []OpCode{OpCode{'e', 0, 1, 0, 1}}
+		codes = []OpCode{{'e', 0, 1, 0, 1}}
 	}
 	// Fixup leading and trailing groups if they show no changes.
 	if codes[0].Tag == 'e' {
diff --git a/vendor/gotest.tools/internal/source/defers.go b/vendor/gotest.tools/internal/source/defers.go
new file mode 100644
index 0000000000..66cfafbb64
--- /dev/null
+++ b/vendor/gotest.tools/internal/source/defers.go
@@ -0,0 +1,53 @@
+package source
+
+import (
+	"go/ast"
+	"go/token"
+
+	"github.com/pkg/errors"
+)
+
+func scanToDeferLine(fileset *token.FileSet, node ast.Node, lineNum int) ast.Node {
+	var matchedNode ast.Node
+	ast.Inspect(node, func(node ast.Node) bool {
+		switch {
+		case node == nil || matchedNode != nil:
+			return false
+		case fileset.Position(node.End()).Line == lineNum:
+			if funcLit, ok := node.(*ast.FuncLit); ok {
+				matchedNode = funcLit
+				return false
+			}
+		}
+		return true
+	})
+	debug("defer line node: %s", debugFormatNode{matchedNode})
+	return matchedNode
+}
+
+func guessDefer(node ast.Node) (ast.Node, error) {
+	defers := collectDefers(node)
+	switch len(defers) {
+	case 0:
+		return nil, errors.New("failed to expression in defer")
+	case 1:
+		return defers[0].Call, nil
+	default:
+		return nil, errors.Errorf(
+			"ambiguous call expression: multiple (%d) defers in call block",
+			len(defers))
+	}
+}
+
+func collectDefers(node ast.Node) []*ast.DeferStmt {
+	var defers []*ast.DeferStmt
+	ast.Inspect(node, func(node ast.Node) bool {
+		if d, ok := node.(*ast.DeferStmt); ok {
+			defers = append(defers, d)
+			debug("defer: %s", debugFormatNode{d})
+			return false
+		}
+		return true
+	})
+	return defers
+}
diff --git a/vendor/gotest.tools/internal/source/source.go b/vendor/gotest.tools/internal/source/source.go
index a05933cc33..8a5d0e8d35 100644
--- a/vendor/gotest.tools/internal/source/source.go
+++ b/vendor/gotest.tools/internal/source/source.go
@@ -24,106 +24,12 @@ func FormattedCallExprArg(stackIndex int, argPos int) (string, error) {
 	if err != nil {
 		return "", err
 	}
+	if argPos >= len(args) {
+		return "", errors.New("failed to find expression")
+	}
 	return FormatNode(args[argPos])
 }
 
-func getNodeAtLine(filename string, lineNum int) (ast.Node, error) {
-	fileset := token.NewFileSet()
-	astFile, err := parser.ParseFile(fileset, filename, nil, parser.AllErrors)
-	if err != nil {
-		return nil, errors.Wrapf(err, "failed to parse source file: %s", filename)
-	}
-
-	node := scanToLine(fileset, astFile, lineNum)
-	if node == nil {
-		return nil, errors.Errorf(
-			"failed to find an expression on line %d in %s", lineNum, filename)
-	}
-	return node, nil
-}
-
-func scanToLine(fileset *token.FileSet, node ast.Node, lineNum int) ast.Node {
-	v := &scanToLineVisitor{lineNum: lineNum, fileset: fileset}
-	ast.Walk(v, node)
-	return v.matchedNode
-}
-
-type scanToLineVisitor struct {
-	lineNum     int
-	matchedNode ast.Node
-	fileset     *token.FileSet
-}
-
-func (v *scanToLineVisitor) Visit(node ast.Node) ast.Visitor {
-	if node == nil || v.matchedNode != nil {
-		return nil
-	}
-	if v.nodePosition(node).Line == v.lineNum {
-		v.matchedNode = node
-		return nil
-	}
-	return v
-}
-
-// In golang 1.9 the line number changed from being the line where the statement
-// ended to the line where the statement began.
-func (v *scanToLineVisitor) nodePosition(node ast.Node) token.Position {
-	if goVersionBefore19 {
-		return v.fileset.Position(node.End())
-	}
-	return v.fileset.Position(node.Pos())
-}
-
-var goVersionBefore19 = isGOVersionBefore19()
-
-func isGOVersionBefore19() bool {
-	version := runtime.Version()
-	// not a release version
-	if !strings.HasPrefix(version, "go") {
-		return false
-	}
-	version = strings.TrimPrefix(version, "go")
-	parts := strings.Split(version, ".")
-	if len(parts) < 2 {
-		return false
-	}
-	minor, err := strconv.ParseInt(parts[1], 10, 32)
-	return err == nil && parts[0] == "1" && minor < 9
-}
-
-func getCallExprArgs(node ast.Node) ([]ast.Expr, error) {
-	visitor := &callExprVisitor{}
-	ast.Walk(visitor, node)
-	if visitor.expr == nil {
-		return nil, errors.New("failed to find call expression")
-	}
-	return visitor.expr.Args, nil
-}
-
-type callExprVisitor struct {
-	expr *ast.CallExpr
-}
-
-func (v *callExprVisitor) Visit(node ast.Node) ast.Visitor {
-	if v.expr != nil || node == nil {
-		return nil
-	}
-	debug("visit (%T): %s", node, debugFormatNode{node})
-
-	if callExpr, ok := node.(*ast.CallExpr); ok {
-		v.expr = callExpr
-		return nil
-	}
-	return v
-}
-
-// FormatNode using go/format.Node and return the result as a string
-func FormatNode(node ast.Node) (string, error) {
-	buf := new(bytes.Buffer)
-	err := format.Node(buf, token.NewFileSet(), node)
-	return buf.String(), err
-}
-
 // CallExprArgs returns the ast.Expr slice for the args of an ast.CallExpr at
 // the index in the call stack.
 func CallExprArgs(stackIndex int) ([]ast.Expr, error) {
@@ -137,12 +43,109 @@ func CallExprArgs(stackIndex int) ([]ast.Expr, error) {
 	if err != nil {
 		return nil, err
 	}
-	debug("found node (%T): %s", node, debugFormatNode{node})
+	debug("found node: %s", debugFormatNode{node})
 
 	return getCallExprArgs(node)
 }
 
-var debugEnabled = os.Getenv("GOTESTYOURSELF_DEBUG") != ""
+func getNodeAtLine(filename string, lineNum int) (ast.Node, error) {
+	fileset := token.NewFileSet()
+	astFile, err := parser.ParseFile(fileset, filename, nil, parser.AllErrors)
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to parse source file: %s", filename)
+	}
+
+	if node := scanToLine(fileset, astFile, lineNum); node != nil {
+		return node, nil
+	}
+	if node := scanToDeferLine(fileset, astFile, lineNum); node != nil {
+		node, err := guessDefer(node)
+		if err != nil || node != nil {
+			return node, err
+		}
+	}
+	return nil, errors.Errorf(
+		"failed to find an expression on line %d in %s", lineNum, filename)
+}
+
+func scanToLine(fileset *token.FileSet, node ast.Node, lineNum int) ast.Node {
+	var matchedNode ast.Node
+	ast.Inspect(node, func(node ast.Node) bool {
+		switch {
+		case node == nil || matchedNode != nil:
+			return false
+		case nodePosition(fileset, node).Line == lineNum:
+			matchedNode = node
+			return false
+		}
+		return true
+	})
+	return matchedNode
+}
+
+// In golang 1.9 the line number changed from being the line where the statement
+// ended to the line where the statement began.
+func nodePosition(fileset *token.FileSet, node ast.Node) token.Position {
+	if goVersionBefore19 {
+		return fileset.Position(node.End())
+	}
+	return fileset.Position(node.Pos())
+}
+
+var goVersionBefore19 = func() bool {
+	version := runtime.Version()
+	// not a release version
+	if !strings.HasPrefix(version, "go") {
+		return false
+	}
+	version = strings.TrimPrefix(version, "go")
+	parts := strings.Split(version, ".")
+	if len(parts) < 2 {
+		return false
+	}
+	minor, err := strconv.ParseInt(parts[1], 10, 32)
+	return err == nil && parts[0] == "1" && minor < 9
+}()
+
+func getCallExprArgs(node ast.Node) ([]ast.Expr, error) {
+	visitor := &callExprVisitor{}
+	ast.Walk(visitor, node)
+	if visitor.expr == nil {
+		return nil, errors.New("failed to find call expression")
+	}
+	debug("callExpr: %s", debugFormatNode{visitor.expr})
+	return visitor.expr.Args, nil
+}
+
+type callExprVisitor struct {
+	expr *ast.CallExpr
+}
+
+func (v *callExprVisitor) Visit(node ast.Node) ast.Visitor {
+	if v.expr != nil || node == nil {
+		return nil
+	}
+	debug("visit: %s", debugFormatNode{node})
+
+	switch typed := node.(type) {
+	case *ast.CallExpr:
+		v.expr = typed
+		return nil
+	case *ast.DeferStmt:
+		ast.Walk(v, typed.Call.Fun)
+		return nil
+	}
+	return v
+}
+
+// FormatNode using go/format.Node and return the result as a string
+func FormatNode(node ast.Node) (string, error) {
+	buf := new(bytes.Buffer)
+	err := format.Node(buf, token.NewFileSet(), node)
+	return buf.String(), err
+}
+
+var debugEnabled = os.Getenv("GOTESTTOOLS_DEBUG") != ""
 
 func debug(format string, args ...interface{}) {
 	if debugEnabled {
@@ -159,5 +162,5 @@ func (n debugFormatNode) String() string {
 	if err != nil {
 		return fmt.Sprintf("failed to format %s: %s", n.Node, err)
 	}
-	return out
+	return fmt.Sprintf("(%T) %s", n.Node, out)
 }