--- a/mercurial/manifest.py	Wed Jul 11 11:41:14 2018 -0400
+++ b/mercurial/manifest.py	Wed Jul 11 11:43:22 2018 -0400
@@ -534,7 +534,8 @@
     def items(self):
         return (x[:2] for x in self._lm.iterentries())
 
-    iteritems = items
+    def iteritems(self):
+        return (x[:2] for x in self._lm.iterentries())
 
     def iterentries(self):
         return self._lm.iterentries()