diff --git a/gcsweb/cmd/gcsweb/gcsweb_test.go b/gcsweb/cmd/gcsweb/gcsweb_test.go
index be283fcc0fb7..cb31c6a8a4bf 100644
--- a/gcsweb/cmd/gcsweb/gcsweb_test.go
+++ b/gcsweb/cmd/gcsweb/gcsweb_test.go
@@ -648,7 +648,7 @@ func TestGetParent(t *testing.T) {
 		t.Run(tc.id, func(t *testing.T) {
 			actual := getParent(tc.path)
 			if !reflect.DeepEqual(tc.expected, actual) {
-				t.Fatalf(cmp.Diff(tc.expected, actual))
+				t.Fatal(cmp.Diff(tc.expected, actual))
 			}
 		})
 	}
diff --git a/kubetest/aksengine.go b/kubetest/aksengine.go
index 99e1e9f1c146..a111e3f69ff8 100644
--- a/kubetest/aksengine.go
+++ b/kubetest/aksengine.go
@@ -1189,16 +1189,16 @@ func (c *aksEngineDeployer) DumpClusterLogs(localPath, gcsPath string) error {
 		return nil
 	}
 
-	var errors []string
+	var errs []string
 	if err := logDumper(); err != nil {
-		errors = append(errors, err.Error())
+		errs = append(errs, err.Error())
 	}
 	if err := logDumperWindows(); err != nil {
 		// don't log error since logDumperWindows failed is expected on non-Windows cluster
 		_ = err
 	}
-	if len(errors) != 0 {
-		return fmt.Errorf(strings.Join(errors, "\n"))
+	if len(errs) != 0 {
+		return errors.New(strings.Join(errs, "\n"))
 	}
 	return nil
 }