test_cmd_line_script.test_non_utf8() is failing on Mac OS X since the changeset 95d1adf144ee.

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FAIL: test_non_utf8 (test.test_cmd_line_script.CmdLineTest)
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Traceback (most recent call last):
  File "/Volumes/bay2/buildslave/cpython/3.x.snakebite-mountainlion-amd64/build/Lib/test/test_cmd_line_script.py", line 381, in test_non_utf8
    rc, out, _ = assert_python_ok(*run_args)
  File "/Volumes/bay2/buildslave/cpython/3.x.snakebite-mountainlion-amd64/build/Lib/test/script_helper.py", line 54, in assert_python_ok
    return _assert_python(True, *args, **env_vars)
  File "/Volumes/bay2/buildslave/cpython/3.x.snakebite-mountainlion-amd64/build/Lib/test/script_helper.py", line 46, in _assert_python
    "stderr follows:\n%s" % (rc, err.decode('ascii', 'ignore')))
AssertionError: Process return code is 2, stderr follows:
/Volumes/bay2/buildslave/cpython/3.x.snakebite-mountainlion-amd64/build/python.exe: can't open file '<unprintable file name>': [Errno 92] Illegal byte sequence

http://buildbot.python.org/all/builders/AMD64%20Mountain%20Lion%20%5BSB%5D%203.x/builds/404/steps/test/logs/stdio