--- a/mercurial/copies.py	Fri Apr 12 10:44:37 2019 -0700
+++ b/mercurial/copies.py	Wed Apr 17 14:11:54 2019 -0700
@@ -527,9 +527,9 @@
 
     renamedeleteset = set()
     divergeset = set()
-    for src, dsts in diverge.items():
+    for dsts in diverge.values():
         divergeset.update(dsts)
-    for src, dsts in renamedelete.items():
+    for dsts in renamedelete.values():
         renamedeleteset.update(dsts)
 
     # find interesting file sets from manifests