Comment 3 for bug 1475502

I hit this again in Py34 test.

http://logs.openstack.org/55/261155/1/check/gate-oslo.messaging-python34/bbb5dc7/testr_results.html.gz

ft20.183: oslo_messaging.tests.drivers.test_impl_rabbit.TestSendReceive.test_send_receive(single_sender,with_context,zero,reply_failure,expected_failure,no_timeout)_StringException: Empty attachments:
  stderr
  stdout

Traceback (most recent call last):
  File "/home/jenkins/workspace/gate-oslo.messaging-python34/oslo_messaging/tests/drivers/test_impl_rabbit.py", line 472, in test_send_receive
    self.assertTrue(timeout <= dt < (timeout + 0.100), dt)
  File "/home/jenkins/workspace/gate-oslo.messaging-python34/.tox/py34/lib/python3.4/site-packages/unittest2/case.py", line 702, in assertTrue
    raise self.failureException(msg)
AssertionError: False is not true : 0.716376781463623