--- a/mercurial/patch.py Sat Sep 30 07:44:55 2017 -0400+++ b/mercurial/patch.py Sat Sep 30 07:45:07 2017 -0400@@ -442,7 +442,6 @@ which failed to apply and total the total number of hunks for this files. """- pass def exists(self, fname): raise NotImplementedError