diff -r b2478a996a82 -r 12aca6770046 mercurial/util.py
--- a/mercurial/util.py	Thu Apr 06 11:28:25 2017 +0200
+++ b/mercurial/util.py	Thu Mar 09 21:35:21 2017 -0800
@@ -49,6 +49,7 @@
     pycompat,
 )
 
+cookielib = pycompat.cookielib
 empty = pycompat.empty
 httplib = pycompat.httplib
 httpserver = pycompat.httpserver