The repr test of userdict fails sometimes, too.

http://buildbot.python.org/all/builders/AMD64%20Ubuntu%20LTS%203.x/builds/3120/steps/test/logs/stdio

======================================================================
FAIL: test_all (test.test_userdict.UserDictTest)
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Traceback (most recent call last):
  File "/opt/python/3.x.langa-ubuntu/build/Lib/test/test_userdict.py", line 48, in test_all
    self.assertEqual(repr(u2), repr(d2))
AssertionError: "{'one': 1, 'two': 2}" != "{'two': 2, 'one': 1}"
- {'one': 1, 'two': 2}
+ {'two': 2, 'one': 1}