Using the Trial test runner results in a spinning test

[Julian Edwards]

This really simple test case reproduces. Save this code as foo.py:

========
from testtools import TestCase
from testtools.deferredruntest import AsynchronousDeferredRunTest
from twisted.internet import defer

class TestMe(TestCase):
    run_tests_with = AsynchronousDeferredRunTest
    def test_reproduce_bug(self):
        return defer.succeed(None)
========

Then run with "trial foo"