Fix a couple of issues reported by go-vet

config_test.go

@@ -62,7 +62,7 @@ var tests = []TestRunner{
 			t.Errorf("Got LookupBool error: '%v', expected none\n", err)
 		}
 		if !val {
-			t.Errorf("Got %b from LookupBool, expected 'false'\n", val)
+			t.Errorf("Got %t from LookupBool, expected 'false'\n", val)
 		}
 	},
 	// LookupInt32

object_test.go

@@ -108,7 +108,7 @@ func TestObjectOwner(t *testing.T) {
 
 func checkShortId(t *testing.T, Id, shortId string) {
 	if len(shortId) < 7 || len(shortId) >= len(Id) {
-		t.Fatal("bad shortId lenght %s", len(shortId))
+		t.Fatalf("bad shortId lenght %d", len(shortId))
 	}
 
 	if !strings.HasPrefix(Id, shortId) {