diff --git a/vendor/k8s.io/kubernetes/staging/src/k8s.io/client-go/discovery/round_tripper.go b/vendor/k8s.io/kubernetes/staging/src/k8s.io/client-go/discovery/round_tripper.go
index 2e352b888f29..23cf8f4fc157 100644
--- a/vendor/k8s.io/kubernetes/staging/src/k8s.io/client-go/discovery/round_tripper.go
+++ b/vendor/k8s.io/kubernetes/staging/src/k8s.io/client-go/discovery/round_tripper.go
@@ -21,6 +21,7 @@ import (
 	"net/http"
 	"path/filepath"
 
+	"github.com/golang/glog"
 	"github.com/gregjones/httpcache"
 	"github.com/gregjones/httpcache/diskcache"
 	"github.com/peterbourgon/diskv"
@@ -48,4 +49,15 @@ func (rt *cacheRoundTripper) RoundTrip(req *http.Request) (*http.Response, error
 	return rt.rt.RoundTrip(req)
 }
 
+func (rt *cacheRoundTripper) CancelRequest(req *http.Request) {
+	type canceler interface {
+		CancelRequest(*http.Request)
+	}
+	if cr, ok := rt.rt.Transport.(canceler); ok {
+		cr.CancelRequest(req)
+	} else {
+		glog.Errorf("CancelRequest not implemented by %T", rt.rt.Transport)
+	}
+}
+
 func (rt *cacheRoundTripper) WrappedRoundTripper() http.RoundTripper { return rt.rt.Transport }
diff --git a/vendor/k8s.io/kubernetes/staging/src/k8s.io/client-go/transport/round_trippers.go b/vendor/k8s.io/kubernetes/staging/src/k8s.io/client-go/transport/round_trippers.go
index 459a93760d63..9733cabae8f3 100644
--- a/vendor/k8s.io/kubernetes/staging/src/k8s.io/client-go/transport/round_trippers.go
+++ b/vendor/k8s.io/kubernetes/staging/src/k8s.io/client-go/transport/round_trippers.go
@@ -138,7 +138,7 @@ func (rt *authProxyRoundTripper) CancelRequest(req *http.Request) {
 	if canceler, ok := rt.rt.(requestCanceler); ok {
 		canceler.CancelRequest(req)
 	} else {
-		glog.Errorf("CancelRequest not implemented")
+		glog.Errorf("CancelRequest not implemented by %T", rt.rt)
 	}
 }
 
@@ -166,7 +166,7 @@ func (rt *userAgentRoundTripper) CancelRequest(req *http.Request) {
 	if canceler, ok := rt.rt.(requestCanceler); ok {
 		canceler.CancelRequest(req)
 	} else {
-		glog.Errorf("CancelRequest not implemented")
+		glog.Errorf("CancelRequest not implemented by %T", rt.rt)
 	}
 }
 
@@ -197,7 +197,7 @@ func (rt *basicAuthRoundTripper) CancelRequest(req *http.Request) {
 	if canceler, ok := rt.rt.(requestCanceler); ok {
 		canceler.CancelRequest(req)
 	} else {
-		glog.Errorf("CancelRequest not implemented")
+		glog.Errorf("CancelRequest not implemented by %T", rt.rt)
 	}
 }
 
@@ -257,7 +257,7 @@ func (rt *impersonatingRoundTripper) CancelRequest(req *http.Request) {
 	if canceler, ok := rt.delegate.(requestCanceler); ok {
 		canceler.CancelRequest(req)
 	} else {
-		glog.Errorf("CancelRequest not implemented")
+		glog.Errorf("CancelRequest not implemented by %T", rt.delegate)
 	}
 }
 
@@ -288,7 +288,7 @@ func (rt *bearerAuthRoundTripper) CancelRequest(req *http.Request) {
 	if canceler, ok := rt.rt.(requestCanceler); ok {
 		canceler.CancelRequest(req)
 	} else {
-		glog.Errorf("CancelRequest not implemented")
+		glog.Errorf("CancelRequest not implemented by %T", rt.rt)
 	}
 }
 
@@ -372,7 +372,7 @@ func (rt *debuggingRoundTripper) CancelRequest(req *http.Request) {
 	if canceler, ok := rt.delegatedRoundTripper.(requestCanceler); ok {
 		canceler.CancelRequest(req)
 	} else {
-		glog.Errorf("CancelRequest not implemented")
+		glog.Errorf("CancelRequest not implemented by %T", rt.delegatedRoundTripper)
 	}
 }