diff -r 649d3ac37a12 -r d783f945a701 mercurial/archival.py
--- a/mercurial/archival.py	Sun Oct 06 19:25:18 2019 -0400
+++ b/mercurial/archival.py	Mon Oct 07 00:04:04 2019 -0400
@@ -74,7 +74,7 @@
 
 
 def guesskind(dest):
-    for kind, extensions in exts.iteritems():
+    for kind, extensions in pycompat.iteritems(exts):
         if any(dest.endswith(ext) for ext in extensions):
             return kind
     return None