pytest-xdist not compatible with pytest 3.4.0

[samuelcolvin]

Running tests with pytest-3.4 both xdist-1.22.0 (most recent released version) and xdist-1.22.1.dev1+g3098f27 (current master). I'm getting the error below.

I thought this might be fixed by #266 but apparently not since I still get the error with master.

This was working fine with pytest-3.3.2.

I've looked and couldn't find a duplicate of this, sorry if I'm being blind. I'm aware this could be an error with another plugin, but xdist looked most likely so I started here.

(env) TutorCruncher2 0 123ms ➤  pytest TutorCruncher/accounting/tests/test_ahcs.py
Test session starts (platform: linux, Python 3.6.3, pytest 3.4.0, pytest-sugar 0.9.0)
Django settings: TutorCruncher.test_settings (from ini file)
rootdir: /home/samuel/TutorCruncher2, inifile: setup.cfg
plugins: xdist-1.22.1.dev1+g3098f27, timeout-1.2.1, sugar-0.9.0, forked-0.2, django-3.1.2, cov-2.5.1
timeout: 60.0s method: signal

 TutorCruncher/accounting/tests/test_ahcs.py ✓                                                                                                 4% ▌         
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/_pytest/main.py", line 100, in wrap_session
INTERNALERROR>     session.exitstatus = doit(config, session) or 0
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/_pytest/main.py", line 138, in _main
INTERNALERROR>     config.hook.pytest_runtestloop(session=session)
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/__init__.py", line 617, in __call__
INTERNALERROR>     return self._hookexec(self, self._nonwrappers + self._wrappers, kwargs)
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/__init__.py", line 222, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook, methods, kwargs)
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/__init__.py", line 216, in <lambda>
INTERNALERROR>     firstresult=hook.spec_opts.get('firstresult'),
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/callers.py", line 201, in _multicall
INTERNALERROR>     return outcome.get_result()
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/callers.py", line 76, in get_result
INTERNALERROR>     raise ex[1].with_traceback(ex[2])
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/callers.py", line 180, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/_pytest/main.py", line 161, in pytest_runtestloop
INTERNALERROR>     item.config.hook.pytest_runtest_protocol(item=item, nextitem=nextitem)
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/__init__.py", line 617, in __call__
INTERNALERROR>     return self._hookexec(self, self._nonwrappers + self._wrappers, kwargs)
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/__init__.py", line 222, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook, methods, kwargs)
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/__init__.py", line 216, in <lambda>
INTERNALERROR>     firstresult=hook.spec_opts.get('firstresult'),
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/callers.py", line 201, in _multicall
INTERNALERROR>     return outcome.get_result()
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/callers.py", line 76, in get_result
INTERNALERROR>     raise ex[1].with_traceback(ex[2])
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/callers.py", line 180, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/_pytest/runner.py", line 64, in pytest_runtest_protocol
INTERNALERROR>     nodeid=item.nodeid, location=item.location,
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/__init__.py", line 617, in __call__
INTERNALERROR>     return self._hookexec(self, self._nonwrappers + self._wrappers, kwargs)
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/__init__.py", line 222, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook, methods, kwargs)
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/__init__.py", line 216, in <lambda>
INTERNALERROR>     firstresult=hook.spec_opts.get('firstresult'),
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/callers.py", line 201, in _multicall
INTERNALERROR>     return outcome.get_result()
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/callers.py", line 76, in get_result
INTERNALERROR>     raise ex[1].with_traceback(ex[2])
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/pluggy/callers.py", line 180, in _multicall
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/home/samuel/TutorCruncher2/env/lib/python3.6/site-packages/_pytest/terminal.py", line 315, in pytest_runtest_logfinish
INTERNALERROR>     last_item = len(self._progress_nodeids_reported) == self._session.testscollected
INTERNALERROR> AttributeError: 'NoneType' object has no attribute 'testscollected'


Results (4.08s):
       1 passed
(env) TutorCruncher2 3 5.55s ➤  

I hope that includes all information need, if not, let me know and I'll provide what I can.

[nicoddemus]

Hi, are you using pytest sugar?

[samuelcolvin]

yes, see the output above.

[samuelcolvin]

ok, confirmed it doesn't happen when I uninstall pytest sugar. Will look further and perhaps report an error on that project.

[samuelcolvin]

Teemu/pytest-sugar#132