Specifically, test_strptime fails:

ss.............F.....................E...........
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ERROR: test_timezone (__main__.StrptimeTests)
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Traceback (most recent call last):
  File "E:\GitHub\cpython\lib\test\test_strptime.py", line 330, in test_timezone
    strp_output = _strptime._strptime_time(strf_output, "%Z")
  File "E:\GitHub\cpython\lib\_strptime.py", line 559, in _strptime_time
    tt = _strptime(data_string, format)[0]
  File "E:\GitHub\cpython\lib\_strptime.py", line 365, in _strptime
    data_string[found.end():])
ValueError: unconverted data remains:  (heure d?été)

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FAIL: test_timezone (__main__.LocaleTime_Tests)
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Traceback (most recent call last):
  File "E:\GitHub\cpython\lib\test\test_strptime.py", line 78, in test_timezone
    (timezone, self.LT_ins.timezone))
AssertionError: False is not true : timezone est (heure d?été) not found in (frozenset({'utc', 'est', 'gmt'}), frozenset({'est (heure d\x92été)'}))

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Ran 49 tests in 0.128s

FAILED (failures=1, errors=1, skipped=2)

Eryk Sun explains the cause in http://bugs.python.org/issue26226#msg269462