Revision 68903 was merged in py3k in r68908. It looks like a similar issue shows up in test_random:
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ERROR: test_pickling (test.test_random.MersenneTwister_TestBasicOps)
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Traceback (most recent call last):
File "/home/buildbot/slave/py-build/3.1.norwitz-amd64/build/Lib/test/test_random.py", line 107, in test_pickling
state = pickle.dumps(self.gen)
File "/home/buildbot/slave/py-build/3.1.norwitz-amd64/build/Lib/pickle.py", line 1358, in dumps
Pickler(f, protocol, fix_imports=fix_imports).dump(obj)
_pickle.PicklingError: Can't pickle <class 'random.Random'>: it's not the same object as random.Random
See http://www.python.org/dev/buildbot/all/builders/amd64%20gentoo%203.1/builds/819/steps/test/logs/stdio