Causes tests failing to build
diff --git a/registry/handlers/api_test.go b/registry/handlers/api_test.go
index 4c7a62f..9664eea 100644
--- a/registry/handlers/api_test.go
+++ b/registry/handlers/api_test.go
@@ -885,7 +885,7 @@ func testBlobDelete(t *testing.T, env *testEnv, args blobArgs) {
 	ref, _ := reference.WithDigest(imageName, layerDigest)
 	layerURL, err := env.builder.BuildBlobURL(ref)
 	if err != nil {
-		t.Fatalf(err.Error())
+		t.Fatal(err.Error())
 	}
 	// ---------------
 	// Delete a layer
diff --git a/registry/proxy/proxyblobstore_test.go b/registry/proxy/proxyblobstore_test.go
index b491d55..3307764 100644
--- a/registry/proxy/proxyblobstore_test.go
+++ b/registry/proxy/proxyblobstore_test.go
@@ -347,7 +347,7 @@ func testProxyStoreServe(t *testing.T, te *testEnv, numClients int) {
 
 				err = te.store.ServeBlob(te.ctx, w, r, remoteBlob.Digest)
 				if err != nil {
-					t.Errorf(err.Error())
+					t.Error(err.Error())
 					return
 				}
 
@@ -392,7 +392,7 @@ func testProxyStoreServe(t *testing.T, te *testEnv, numClients int) {
 
 		err = te.store.ServeBlob(te.ctx, w, r, dr.Digest)
 		if err != nil {
-			t.Fatalf(err.Error())
+			t.Fatal(err.Error())
 		}
 
 		dl := digest.FromBytes(w.Body.Bytes())
diff --git a/registry/proxy/proxymanifeststore_test.go b/registry/proxy/proxymanifeststore_test.go
index 4927dc1..bd7727e 100644
--- a/registry/proxy/proxymanifeststore_test.go
+++ b/registry/proxy/proxymanifeststore_test.go
@@ -115,7 +115,7 @@ func newManifestStoreTestEnv(t *testing.T, name, tag string) *manifestStoreTestE
 
 	manifestDigest, err := populateRepo(ctx, t, truthRepo, name, tag)
 	if err != nil {
-		t.Fatalf(err.Error())
+		t.Fatal(err.Error())
 	}
 
 	localRegistry, err := storage.NewRegistry(ctx, inmemory.New(), storage.BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), storage.EnableRedirect, storage.DisableDigestResumption, storage.Schema1SigningKey(k), storage.EnableSchema1)
@@ -190,7 +190,7 @@ func populateRepo(ctx context.Context, t *testing.T, repository distribution.Rep
 
 	ms, err := repository.Manifests(ctx)
 	if err != nil {
-		t.Fatalf(err.Error())
+		t.Fatal(err.Error())
 	}
 	dgst, err := ms.Put(ctx, sm)
 	if err != nil {
diff --git a/registry/proxy/scheduler/scheduler_test.go b/registry/proxy/scheduler/scheduler_test.go
index 8ac397f..85a34d5 100644
--- a/registry/proxy/scheduler/scheduler_test.go
+++ b/registry/proxy/scheduler/scheduler_test.go
@@ -171,7 +171,7 @@ func TestStopRestore(t *testing.T) {
 
 	err := s.Start()
 	if err != nil {
-		t.Fatalf(err.Error())
+		t.Fatal(err.Error())
 	}
 	s.add(ref1, 300*timeUnit, entryTypeBlob)
 	s.add(ref2, 100*timeUnit, entryTypeBlob)
diff --git a/registry/storage/driver/walk_test.go b/registry/storage/driver/walk_test.go
index d6e9beb..942a9e9 100644
--- a/registry/storage/driver/walk_test.go
+++ b/registry/storage/driver/walk_test.go
@@ -39,9 +39,9 @@ func TestWalkFileRemoved(t *testing.T) {
 		return nil
 	})
 	if len(infos) != 1 || infos[0].Path() != "zoidberg" {
-		t.Errorf(fmt.Sprintf("unexpected path set during walk: %s", infos))
+		t.Error(fmt.Sprintf("unexpected path set during walk: %s", infos))
 	}
 	if err != nil {
-		t.Fatalf(err.Error())
+		t.Fatal(err.Error())
 	}
 }
diff --git a/registry/storage/purgeuploads_test.go b/registry/storage/purgeuploads_test.go
index 398df2b..188ae2d 100644
--- a/registry/storage/purgeuploads_test.go
+++ b/registry/storage/purgeuploads_test.go
@@ -115,7 +115,7 @@ func TestPurgeOnlyUploads(t *testing.T) {
 	// these files aren't deleted.
 	dataPath, err := pathFor(uploadDataPathSpec{name: "test-repo", id: uuid.Generate().String()})
 	if err != nil {
-		t.Fatalf(err.Error())
+		t.Fatal(err.Error())
 	}
 	nonUploadPath := strings.Replace(dataPath, "_upload", "_important", -1)
 	if strings.Contains(nonUploadPath, "_upload") {