diff --git a/vendor/github.com/cheggaaa/pb/pb.go b/vendor/github.com/cheggaaa/pb/pb.go
index 8289ab0fb..3ffc58c92 100644
--- a/vendor/github.com/cheggaaa/pb/pb.go
+++ b/vendor/github.com/cheggaaa/pb/pb.go
@@ -13,7 +13,7 @@ import (
 )
 
 // Current version
-const Version = "1.0.25"
+const Version = "1.0.26"
 
 const (
 	// Default refresh rate - 200ms
@@ -159,12 +159,16 @@ func (pb *ProgressBar) Add64(add int64) int64 {
 
 // Set prefix string
 func (pb *ProgressBar) Prefix(prefix string) *ProgressBar {
+	pb.mu.Lock()
+	defer pb.mu.Unlock()
 	pb.prefix = prefix
 	return pb
 }
 
 // Set postfix string
 func (pb *ProgressBar) Postfix(postfix string) *ProgressBar {
+	pb.mu.Lock()
+	defer pb.mu.Unlock()
 	pb.postfix = postfix
 	return pb
 }
@@ -273,6 +277,8 @@ func (pb *ProgressBar) NewProxyReader(r io.Reader) *Reader {
 }
 
 func (pb *ProgressBar) write(total, current int64) {
+	pb.mu.Lock()
+	defer pb.mu.Unlock()
 	width := pb.GetWidth()
 
 	var percentBox, countersBox, timeLeftBox, timeSpentBox, speedBox, barBox, end, out string
@@ -300,12 +306,10 @@ func (pb *ProgressBar) write(total, current int64) {
 	}
 
 	// time left
-	pb.mu.Lock()
 	currentFromStart := current - pb.startValue
 	fromStart := time.Now().Sub(pb.startTime)
 	lastChangeTime := pb.changeTime
 	fromChange := lastChangeTime.Sub(pb.startTime)
-	pb.mu.Unlock()
 
 	if pb.ShowElapsedTime {
 		timeSpentBox = fmt.Sprintf(" %s ", (fromStart/time.Second)*time.Second)
@@ -394,13 +398,12 @@ func (pb *ProgressBar) write(total, current int64) {
 
 	// check len
 	out = pb.prefix + timeSpentBox + countersBox + barBox + percentBox + speedBox + timeLeftBox + pb.postfix
+
 	if cl := escapeAwareRuneCountInString(out); cl < width {
 		end = strings.Repeat(" ", width-cl)
 	}
 
 	// and print!
-	pb.mu.Lock()
-	defer pb.mu.Unlock()
 	pb.lastPrint = out + end
 	isFinish := pb.isFinish
 
diff --git a/vendor/github.com/cheggaaa/pb/pb_x.go b/vendor/github.com/cheggaaa/pb/pb_x.go
index 8e05770ce..398345080 100644
--- a/vendor/github.com/cheggaaa/pb/pb_x.go
+++ b/vendor/github.com/cheggaaa/pb/pb_x.go
@@ -20,6 +20,7 @@ var (
 	echoLockMutex    sync.Mutex
 	origTermStatePtr *unix.Termios
 	tty              *os.File
+	istty            bool
 )
 
 func init() {
@@ -28,13 +29,18 @@ func init() {
 
 	var err error
 	tty, err = os.Open("/dev/tty")
+	istty = true
 	if err != nil {
 		tty = os.Stdin
+		istty = false
 	}
 }
 
 // terminalWidth returns width of the terminal.
 func terminalWidth() (int, error) {
+	if !istty {
+		return 0, errors.New("Not Supported")
+	}
 	echoLockMutex.Lock()
 	defer echoLockMutex.Unlock()
 
@@ -51,26 +57,28 @@ func terminalWidth() (int, error) {
 func lockEcho() (shutdownCh chan struct{}, err error) {
 	echoLockMutex.Lock()
 	defer echoLockMutex.Unlock()
-	if origTermStatePtr != nil {
-		return shutdownCh, ErrPoolWasStarted
-	}
-
-	fd := int(tty.Fd())
-
-	origTermStatePtr, err = unix.IoctlGetTermios(fd, ioctlReadTermios)
-	if err != nil {
-		return nil, fmt.Errorf("Can't get terminal settings: %v", err)
-	}
+	if istty {
+		if origTermStatePtr != nil {
+			return shutdownCh, ErrPoolWasStarted
+		}
+
+		fd := int(tty.Fd())
+
+		origTermStatePtr, err = unix.IoctlGetTermios(fd, ioctlReadTermios)
+		if err != nil {
+			return nil, fmt.Errorf("Can't get terminal settings: %v", err)
+		}
+
+		oldTermios := *origTermStatePtr
+		newTermios := oldTermios
+		newTermios.Lflag &^= syscall.ECHO
+		newTermios.Lflag |= syscall.ICANON | syscall.ISIG
+		newTermios.Iflag |= syscall.ICRNL
+		if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, &newTermios); err != nil {
+			return nil, fmt.Errorf("Can't set terminal settings: %v", err)
+		}
 
-	oldTermios := *origTermStatePtr
-	newTermios := oldTermios
-	newTermios.Lflag &^= syscall.ECHO
-	newTermios.Lflag |= syscall.ICANON | syscall.ISIG
-	newTermios.Iflag |= syscall.ICRNL
-	if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, &newTermios); err != nil {
-		return nil, fmt.Errorf("Can't set terminal settings: %v", err)
 	}
-
 	shutdownCh = make(chan struct{})
 	go catchTerminate(shutdownCh)
 	return
@@ -79,16 +87,18 @@ func lockEcho() (shutdownCh chan struct{}, err error) {
 func unlockEcho() error {
 	echoLockMutex.Lock()
 	defer echoLockMutex.Unlock()
-	if origTermStatePtr == nil {
-		return nil
-	}
+	if istty {
+		if origTermStatePtr == nil {
+			return nil
+		}
 
-	fd := int(tty.Fd())
+		fd := int(tty.Fd())
 
-	if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, origTermStatePtr); err != nil {
-		return fmt.Errorf("Can't set terminal settings: %v", err)
-	}
+		if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, origTermStatePtr); err != nil {
+			return fmt.Errorf("Can't set terminal settings: %v", err)
+		}
 
+	}
 	origTermStatePtr = nil
 
 	return nil
diff --git a/vendor/github.com/cheggaaa/pb/pool.go b/vendor/github.com/cheggaaa/pb/pool.go
index f44baa01f..392e7599c 100644
--- a/vendor/github.com/cheggaaa/pb/pool.go
+++ b/vendor/github.com/cheggaaa/pb/pool.go
@@ -90,7 +90,9 @@ func (p *Pool) writer() {
 // Restore terminal state and close pool
 func (p *Pool) Stop() error {
 	p.finishOnce.Do(func() {
-		close(p.shutdownCh)
+		if p.shutdownCh != nil {
+			close(p.shutdownCh)
+		}
 	})
 
 	// Wait for the worker to complete
diff --git a/vendor/vendor.json b/vendor/vendor.json
index 24d8c6e75..f1304234b 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -657,12 +657,12 @@
 			"revision": "50da7d4131a3b5c9d063932461cab4d1fafb20b0"
 		},
 		{
-			"checksumSHA1": "7GMQgpfoSQv4QcaREE2GzSZvlQI=",
+			"checksumSHA1": "UBznrWrDuttNZf56nubBl2nG4Ws=",
 			"path": "github.com/cheggaaa/pb",
-			"revision": "2af8bbdea9e99e83b3ac400d8f6b6d1b8cbbf338",
-			"revisionTime": "2018-05-21T09:56:06Z",
-			"version": "v1.0.25",
-			"versionExact": "v1.0.25"
+			"revision": "007b75a044e968336a69a6c0c617251ab62ac14c",
+			"revisionTime": "2018-10-16T15:56:12Z",
+			"version": "v1.0.26",
+			"versionExact": "v1.0.26"
 		},
 		{
 			"checksumSHA1": "X2/71FBrn4pA3WcA620ySVO0uHU=",