(oslo.messaging) $ tox -e py27 -- --concurrency=1
GLOB sdist-make: /home/doug/programming/python/oslo.messaging/setup.py
py27 inst-nodeps: /home/doug/programming/python/oslo.messaging/.tox/dist/oslo.messaging-1.14.1.dev21.zip
py27 installed: aioeventlet==0.4,amqp==1.4.6,anyjson==0.3.3,appdirs==1.4.0,Babel==1.3,coverage==3.7.1,debtcollector==0.5.0,discover==0.4.0,docutils==0.12,eventlet==0.17.4,extras==0.0.3,fixtures==1.3.1,flake8==2.2.4,futures==3.0.3,greenlet==0.4.7,hacking==0.10.2,iso8601==0.1.10,Jinja2==2.7.3,kombu==3.0.26,linecache2==1.0.0,MarkupSafe==0.23,mccabe==0.2.1,mock==1.0.1,monotonic==0.2,mox3==0.8.0,msgpack-python==0.4.6,netaddr==0.7.15,netifaces==0.10.4,os-client-config==1.4.0,oslo.config==1.14.0,oslo.context==0.4.0,oslo.i18n==2.1.0,oslo.messaging==1.14.1.dev21,oslo.middleware==2.3.0,oslo.serialization==1.7.0,oslo.service==0.3.0,oslo.utils==1.8.0,oslosphinx==3.0.0,oslotest==1.8.0,pbr==1.2.0,pep8==1.5.7,pyflakes==0.8.1,Pygments==2.0.2,pyngus==1.3.1,python-mimeparse==0.1.4,python-qpid-proton==0.9.1.1,python-subunit==1.1.0,pytz==2015.4,PyYAML==3.11,pyzmq==14.7.0,qpid-python==0.26,redis==2.10.3,requests==2.7.0,six==1.9.0,Sphinx==1.2.3,stevedore==1.6.0,testrepository==0.0.20,testscenarios==0.5.0,testtools==1.8.0,traceback2==1.4.0,trollius==1.0.4,unittest2==1.1.0,WebOb==1.4.1,wheel==0.24.0,wrapt==1.10.5
py27 runtests: PYTHONHASHSEED='3871228037'
py27 runtests: commands[0] | python setup.py testr --slowest --testr-args=--concurrency=1
running testr
running=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-60} ${PYTHON:-python} -m subunit.run discover -t ./ .
Traceback (most recent call last):
  File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/home/doug/programming/python/oslo.messaging/.tox/py27/lib/python2.7/site-packages/subunit/run.py", line 149, in <module>
    main()
  File "/home/doug/programming/python/oslo.messaging/.tox/py27/lib/python2.7/site-packages/subunit/run.py", line 145, in main
    stdout=stdout, exit=False)
  File "/home/doug/programming/python/oslo.messaging/.tox/py27/local/lib/python2.7/site-packages/testtools/run.py", line 171, in __init__
    self.parseArgs(argv)
  File "/home/doug/programming/python/oslo.messaging/.tox/py27/local/lib/python2.7/site-packages/unittest2/main.py", line 113, in parseArgs
    self._do_discovery(argv[2:])
  File "/home/doug/programming/python/oslo.messaging/.tox/py27/local/lib/python2.7/site-packages/testtools/run.py", line 211, in _do_discovery
    super(TestProgram, self)._do_discovery(argv, Loader=Loader)
  File "/home/doug/programming/python/oslo.messaging/.tox/py27/local/lib/python2.7/site-packages/unittest2/main.py", line 223, in _do_discovery
    self.test = loader.discover(self.start, self.pattern, self.top)
  File "/home/doug/programming/python/oslo.messaging/.tox/py27/local/lib/python2.7/site-packages/unittest2/loader.py", line 367, in discover
    tests = list(self._find_tests(start_dir, pattern))
  File "/home/doug/programming/python/oslo.messaging/.tox/py27/local/lib/python2.7/site-packages/unittest2/loader.py", line 424, in _find_tests
    full_path, pattern, namespace)
TypeError: 'NoneType' object is not iterable
======================================================================
FAIL: process-returncode
tags: worker-0
----------------------------------------------------------------------
returncode 1
Ran 1 (-1964) tests
FAILED (id=5, failures=1 (+1))
error: testr failed (1)
ERROR: InvocationError: '/home/doug/programming/python/oslo.messaging/.tox/py27/bin/python setup.py testr --slowest --testr-args=--concurrency=1'
__________________________________________________________________________________________ summary ___________________________________________________________________________________________
ERROR:   py27: commands failed