looks like re-running the tests in verbose mode using -w is affected by this issue.

the first cpickle subtest failing is:

======================================================================
ERROR: test_recursive_dict_subclass_and_inst (test.test_cpickle.cStringIOCPicklerFastTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/packages/python/2.7/python2.7-2.7.11~rc1/Lib/test/test_cpickle.py", line 175, in wrapper
    func(self)
  File "/home/packages/python/2.7/python2.7-2.7.11~rc1/Lib/test/pickletester.py", line 819, in test_recursive_dict_subclass_a
nd_inst
    self.check_recursive_collection_and_inst(MyDict.fromkeys)
  File "/home/packages/python/2.7/python2.7-2.7.11~rc1/Lib/test/pickletester.py", line 790, in check_recursive_collection_and
_inst
    s = self.dumps(y, proto)
  File "/home/packages/python/2.7/python2.7-2.7.11~rc1/Lib/test/test_cpickle.py", line 141, in dumps
    p.dump(arg)
AttributeError: 'module' object has no attribute '_reduce_ex'