Comment 1 for bug 1130146

Definitely confirmed with master, you'll see the following:

Exception in thread Thread-6:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 505, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/home/sdague/code/openstack/nova/.venv/local/lib/python2.7/site-packages/testtools/testsuite.py", line 102, in _run_test
    test.run(process_result)
  File "/home/sdague/code/openstack/nova/.venv/local/lib/python2.7/site-packages/subunit/__init__.py", line 1196, in run
    protocol.lineReceived(line)
  File "/home/sdague/code/openstack/nova/.venv/local/lib/python2.7/site-packages/subunit/__init__.py", line 573, in lineReceived
    self._state.lineReceived(line)
  File "/home/sdague/code/openstack/nova/.venv/local/lib/python2.7/site-packages/subunit/__init__.py", line 410, in lineReceived
    self.details_parser.lineReceived(line)
  File "/home/sdague/code/openstack/nova/.venv/local/lib/python2.7/site-packages/subunit/details.py", line 119, in lineReceived
    self._parse_state(line)
  File "/home/sdague/code/openstack/nova/.venv/local/lib/python2.7/site-packages/subunit/details.py", line 91, in _look_for_content
    raise ValueError("Invalid MIME type %r" % value)
ValueError: Invalid MIME type u'2013-02-19 15:46:03.877518Z'

And it looks like it drops a whole process full of tests (total count 4699 on master), but continutes to pass things