StartUpFailure explodes when passed to unittest.TextTestRunner

zope.tal has a setup.py that uses zope.testrunner's test collection that is then passed (by setuptools) to the stock stdlib unittest test runner.

When an import error happens, this is what I get:

Traceback (most recent call last):
  File "setup.py", line 83, in <module>
    zip_safe = False,
  File "/usr/lib/python3.2/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/usr/lib/python3.2/distutils/dist.py", line 917, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python3.2/distutils/dist.py", line 936, in run_command
    cmd_obj.run()
  File "/home/mg/src/zope.tal/.tox/py32/lib/python3.2/site-packages/distribute-0.6.31-py3.2.egg/setuptools/command/test.py", line 138, in run
    self.with_project_on_sys_path(self.run_tests)
  File "/home/mg/src/zope.tal/.tox/py32/lib/python3.2/site-packages/distribute-0.6.31-py3.2.egg/setuptools/command/test.py", line 118, in with_project_on_sys_path
    func()
  File "/home/mg/src/zope.tal/.tox/py32/lib/python3.2/site-packages/distribute-0.6.31-py3.2.egg/setuptools/command/test.py", line 164, in run_tests
    testLoader = cks
  File "/usr/lib/python3.2/unittest/main.py", line 124, in __init__
    self.runTests()
  File "/usr/lib/python3.2/unittest/main.py", line 270, in runTests
    self.result = testRunner.run(self.test)
  File "/usr/lib/python3.2/unittest/runner.py", line 168, in run
    test(result)
  File "/usr/lib/python3.2/unittest/suite.py", line 67, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.2/unittest/suite.py", line 105, in run
    test(result)
  File "/usr/lib/python3.2/unittest/suite.py", line 67, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.2/unittest/suite.py", line 105, in run
    test(result)
  File "/usr/lib/python3.2/unittest/case.py", line 477, in __call__
    return self.run(*args, **kwds)
  File "/usr/lib/python3.2/unittest/case.py", line 408, in run
    testMethod = getattr(self, self._testMethodName)
AttributeError: 'StartUpFailure' object has no attribute '_testMethodName'

This error is very similar to bug 624084 and bug 221151, but it happens with latest zope.testrunner 4.0.4, which has both of those bugs fixed.