diff --git a/pkg/v1/hash_test.go b/pkg/v1/hash_test.go
index bf06e03aba..650d053373 100644
--- a/pkg/v1/hash_test.go
+++ b/pkg/v1/hash_test.go
@@ -32,14 +32,14 @@ func TestGoodHashes(t *testing.T) {
 	for _, s := range good {
 		h, err := NewHash(s)
 		if err != nil {
-			t.Errorf("Unexpected error parsing hash: %v", err)
+			t.Error("Unexpected error parsing hash:", err)
 		}
 		if got, want := h.String(), s; got != want {
 			t.Errorf("String(); got %q, want %q", got, want)
 		}
 		bytes, err := json.Marshal(h)
 		if err != nil {
-			t.Errorf("Unexpected error json.Marshaling hash: %v", err)
+			t.Error("Unexpected error json.Marshaling hash:", err)
 		}
 		if got, want := string(bytes), strconv.Quote(h.String()); got != want {
 			t.Errorf("json.Marshal(); got %q, want %q", got, want)
@@ -64,7 +64,7 @@ func TestBadHashes(t *testing.T) {
 	for _, s := range bad {
 		h, err := NewHash(s)
 		if err == nil {
-			t.Errorf("Expected error, got: %v", h)
+			t.Error("Expected error, got:", h)
 		}
 	}
 }
@@ -73,7 +73,7 @@ func TestSHA256(t *testing.T) {
 	input := "asdf"
 	h, n, err := SHA256(strings.NewReader(input))
 	if err != nil {
-		t.Errorf("SHA256(asdf) = %v", err)
+		t.Error("SHA256(asdf) =", err)
 	}
 	if got, want := h.Algorithm, "sha256"; got != want {
 		t.Errorf("Algorithm; got %v, want %v", got, want)
@@ -92,10 +92,10 @@ func TestTextMarshalling(t *testing.T) {
 	foo := make(map[Hash]string)
 	b, err := json.Marshal(foo)
 	if err != nil {
-		t.Fatalf("could not marshal: %v", err)
+		t.Fatal("could not marshal:", err)
 	}
 	if err := json.Unmarshal(b, &foo); err != nil {
-		t.Errorf("could not unmarshal: %v", err)
+		t.Error("could not unmarshal:", err)
 	}
 
 	h := &Hash{
@@ -119,7 +119,7 @@ func TestTextMarshalling(t *testing.T) {
 func mustHash(s string, t *testing.T) Hash {
 	h, _, err := SHA256(strings.NewReader(s))
 	if err != nil {
-		t.Fatalf("SHA256(%s) = %v", s, err)
+		t.Fatal("SHA256(%s) =", s, err)
 	}
 	return h
 }
@@ -130,7 +130,7 @@ func TestVerificationFailure(t *testing.T) {
 
 	verified, err := VerifyReadCloser(ioutil.NopCloser(buf), mustHash("not the same", t))
 	if err != nil {
-		t.Fatalf("VerifyReadCloser() = %v", err)
+		t.Fatal("VerifyReadCloser() =", err)
 	}
 	if b, err := ioutil.ReadAll(verified); err == nil {
 		t.Errorf("ReadAll() = %q; want verification error", string(b))
@@ -143,10 +143,10 @@ func TestVerification(t *testing.T) {
 
 	verified, err := VerifyReadCloser(ioutil.NopCloser(buf), mustHash(want, t))
 	if err != nil {
-		t.Fatalf("VerifyReadCloser() = %v", err)
+		t.Fatal("VerifyReadCloser() =", err)
 	}
 	if _, err := ioutil.ReadAll(verified); err != nil {
-		t.Errorf("ReadAll() = %v", err)
+		t.Error("ReadAll() =", err)
 	}
 }