@@ -16,7 +16,7 @@ func TestMergeLxcConfig(t *testing.T) {

 	out, err := mergeLxcConfIntoOptions(hostConfig)

 	if err != nil {

-		t.Fatalf("Failed to merge Lxc Config ", err)

+		t.Fatalf("Failed to merge Lxc Config: %s", err)

 	}

 	cpuset := out[0]

@@ -122,7 +122,7 @@ func TestAttachTtyWithoutStdin(t *testing.T) {

 		if out, _, err := runCommandWithOutput(cmd); err == nil {

 			t.Fatal("attach should have failed")

 		} else if !strings.Contains(out, expected) {

-			t.Fatal("attach failed with error %q: expected %q", out, expected)

+			t.Fatalf("attach failed with error %q: expected %q", out, expected)

 		}

 	}()

@@ -3799,7 +3799,7 @@ func TestBuildStderr(t *testing.T) {

 		t.Fatal(err)

 	}

 	if stderr != "" {

-		t.Fatal("Stderr should have been empty, instead its: %q", stderr)

+		t.Fatalf("Stderr should have been empty, instead its: %q", stderr)

 	}

 	logDone("build - testing stderr")

 }

@@ -339,7 +339,7 @@ func TestExecTtyWithoutStdin(t *testing.T) {

 		if out, _, err := runCommandWithOutput(cmd); err == nil {

 			t.Fatal("exec should have failed")

 		} else if !strings.Contains(out, expected) {

-			t.Fatal("exec failed with error %q: expected %q", out, expected)

+			t.Fatalf("exec failed with error %q: expected %q", out, expected)

 		}

 	}()

@@ -2759,7 +2759,7 @@ func TestRunTtyWithPipe(t *testing.T) {

 		if out, _, err := runCommandWithOutput(cmd); err == nil {

 			t.Fatal("run should have failed")

 		} else if !strings.Contains(out, expected) {

-			t.Fatal("run failed with error %q: expected %q", out, expected)

+			t.Fatalf("run failed with error %q: expected %q", out, expected)

 		}

 	}()

@@ -311,7 +311,7 @@ func TestFollowSymlinkEmpty(t *testing.T) {

 		t.Fatal(err)

 	}

 	if res != wd {

-		t.Fatal("expected %q got %q", wd, res)

+		t.Fatalf("expected %q got %q", wd, res)

 	}

 }