mercurial/cmdutil.py

--- a/mercurial/cmdutil.py	Sun Oct 06 19:25:18 2019 -0400
+++ b/mercurial/cmdutil.py	Mon Oct 07 00:04:04 2019 -0400
@@ -582,7 +582,7 @@
             # 5. finally restore backed-up files
             try:
                 dirstate = repo.dirstate
-                for realname, tmpname in backups.iteritems():
+                for realname, tmpname in pycompat.iteritems(backups):
                     ui.debug(b'restoring %r to %r\n' % (tmpname, realname))
 
                     if dirstate[realname] == b'n':