--- a/mercurial/hbisect.py	Wed Aug 24 05:42:41 2011 -0400
+++ b/mercurial/hbisect.py	Thu Aug 25 20:21:04 2011 -0400
@@ -150,7 +150,7 @@
         for kind in state:
             for node in state[kind]:
                 f.write("%s %s\n" % (kind, hex(node)))
-        f.rename()
+        f.close()
     finally:
         wlock.release()