--- a/hgext/evolve.py	Tue Jun 03 16:44:24 2014 -0700
+++ b/hgext/evolve.py	Thu Jun 05 18:07:39 2014 -0400
@@ -331,6 +331,7 @@
     # every time this test is run, a kitten is slain.
     # Change it as soon as possible
     if '[,{metadata}]' in orig.__doc__:
+        relations = list(relations)
         for idx, rel in enumerate(relations):
             prec = rel[0]
             sucs = rel[1]