Fix incompatible issue by upgrading to golang 1.13.4

.travis.yml

@@ -6,7 +6,7 @@ env:
     - GO111MODULE=on
 
 go:
-  - "1.12.7"
+  - "1.13.4"
 
 before_install:
   - go get github.com/mattn/goveralls

Dockerfile

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM golang:1.12.7-stretch as builder
+FROM golang:1.13.4-stretch as builder
 WORKDIR /go/src/github.com/kubernetes-sigs/aws-efs-csi-driver
 ADD . .
 RUN make

docs/README.md

@@ -80,7 +80,7 @@ Before the example, you need to:
 Please go through [CSI Spec](https://github.com/container-storage-interface/spec/blob/master/spec.md) and [General CSI driver development guideline](https://kubernetes-csi.github.io/docs/Development.html) to get some basic understanding of CSI driver before you start.
 
 ### Requirements
-* Golang 1.12.7+
+* Golang 1.13.4+
 
 ### Dependency
 Dependencies are managed through go module. To build the project, first turn on go mod using `export GO111MODULE=on`, to build the project run: `make`

test/e2e/e2e_test.go

@@ -47,6 +47,7 @@ var (
 )
 
 func init() {
+	testing.Init()
 	// k8s.io/kubernetes/test/e2e/framework requires env KUBECONFIG to be set
 	// it does not fall back to defaults
 	if os.Getenv(kubeconfigEnvVar) == "" {