--- a/tests/test-mq-qrefresh-replace-log-message.t	Sun Feb 18 17:36:52 2018 +0530
+++ b/tests/test-mq-qrefresh-replace-log-message.t	Sun Feb 18 17:37:47 2018 +0530
@@ -119,7 +119,7 @@
   > def reposetup(ui, repo):
   >     class commitfailure(repo.__class__):
   >         def commit(self, *args, **kwargs):
-  >             raise error.Abort('emulating unexpected abort')
+  >             raise error.Abort(b'emulating unexpected abort')
   >     repo.__class__ = commitfailure
   > EOF