go tool vet --shadow .

.travis.yml

@@ -7,9 +7,12 @@ go:
 before_install:
   - go get -u github.com/golang/lint/golint
   - if [[ $TRAVIS_GO_VERSION == 1.5* ]]; then go get -u github.com/kisielk/errcheck; fi
+  - go get -u golang.org/x/tools/cmd/vet
 
 before_script:
   - '! gofmt -s -l . | read'
   - golint ./...
   - echo $TRAVIS_GO_VERSION
   - if [[ $TRAVIS_GO_VERSION == 1.5* ]]; then errcheck ./...; fi
+  - go vet .
+  - go tool vet --shadow .

cmux_test.go

@@ -46,9 +46,11 @@ func runTestHTTPServer(t *testing.T, l net.Listener) {
 }
 
 func runTestHTTP1Client(t *testing.T, addr string) {
-	r, err := http.Get("http://" + addr)
-	if err != nil {
+	var r *http.Response
+	if resp, err := http.Get("http://" + addr); err != nil {
 		t.Fatal(err)
+	} else {
+		r = resp
 	}
 
 	defer func() {
@@ -124,9 +126,11 @@ func TestAny(t *testing.T) {
 		}
 	}()
 
-	r, err := http.Get("http://" + addr)
-	if err != nil {
+	var r *http.Response
+	if resp, err := http.Get("http://" + addr); err != nil {
 		t.Fatal(err)
+	} else {
+		r = resp
 	}
 
 	defer func() {
@@ -135,6 +139,10 @@ func TestAny(t *testing.T) {
 		}
 	}()
 	b, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		t.Error(err)
+	}
+
 	if string(b) != testHTTP1Resp {
 		t.Errorf("invalid response: want=%s got=%s", testHTTP1Resp, b)
 	}