diff -r bf2bfc6f45fb -r ac4ed8d6ec50 mercurial/obsolete.py
--- a/mercurial/obsolete.py	Fri Sep 11 12:45:19 2015 -0700
+++ b/mercurial/obsolete.py	Tue Sep 15 13:10:25 2015 -0700
@@ -876,7 +876,6 @@
     dictionary is updated in place. The caller is responsible for its life
     span. Code that makes multiple calls to `successorssets` *must* use this
     cache mechanism or suffer terrible performance.
-
     """
 
     succmarkers = repo.obsstore.successors