diff -r c79503f7adac -r 3737e653dcbe mercurial/changegroup.py
--- a/mercurial/changegroup.py	Fri Mar 28 12:51:05 2014 -0500
+++ b/mercurial/changegroup.py	Fri Apr 04 14:01:25 2014 -0500
@@ -360,7 +360,7 @@
 
         def linknodes(filerevlog, fname):
             if fastpathlinkrev:
-                ln, llr = filerevlog.node, filerevlog.linkrev
+                llr = filerevlog.linkrev
                 def genfilenodes():
                     for r in filerevlog:
                         linkrev = llr(r)