pytest >= 5.4.0 raises INTERNALERROR AttributeError with pytest-sugar installed #6951
Description
With both 5.4.0 and 5.4.1, running pytest in the following environment:
``` $ pip list Package Version ------------------ ------- apipkg 1.5 attrs 19.3.0 coverage 5.0.4 execnet 1.7.1 importlib-metadata 1.5.0 more-itertools 8.2.0 packaging 20.3 pip 20.0.2 pluggy 0.13.1 py 1.8.1 pyparsing 2.4.6 pytest 5.4.1 pytest-cov 2.8.1 pytest-forked 1.1.3 pytest-html 2.1.1 pytest-metadata 1.8.0 pytest-sugar 0.9.2 pytest-xdist 1.31.0 setuptools 46.0.0 six 1.14.0 termcolor 1.1.0 wcwidth 0.1.8 wheel 0.34.2 zipp 3.1.0 ```
Raises the following error:
INTERNALERROR> Traceback (most recent call last): INTERNALERROR> File "~/foo/.venv/lib/python3.6/site-packages/_pytest/main.py", line 187, in wrap_session INTERNALERROR> config._do_configure() :INTERNALERROR> File "~/foo/.venv/lib/python3.6/site-packages/_pytest/config/__init__.py", line 820, in _do_configure INTERNALERROR> self.hook.pytest_configure.call_historic(kwargs=dict(config=self)) INTERNALERROR> File "~/foo/.venv/lib/python3.6/site-packages/pluggy/hooks.py", line 308, in call_historic INTERNALERROR> res = self._hookexec(self, self.get_hookimpls(), kwargs) INTERNALERROR> File "~/foo/.venv/lib/python3.6/site-packages/pluggy/manager.py", line 93, in _hookexec INTERNALERROR> return self._inner_hookexec(hook, methods, kwargs) INTERNALERROR> File "~/foo/.venv/lib/python3.6/site-packages/pluggy/manager.py", line 87, in <lambda> INTERNALERROR> firstresult=hook.spec.opts.get("firstresult") if hook.spec else False, INTERNALERROR> File "/~foo/.venv/lib/python3.6/site-packages/pluggy/callers.py", line 208, in _multicall INTERNALERROR> return outcome.get_result() INTERNALERROR> File "~/foo/.venv/lib/python3.6/site-packages/pluggy/callers.py", line 80, in get_result INTERNALERROR> raise ex[1].with_traceback(ex[2]) INTERNALERROR> File "~/foo/.venv/lib/python3.6/site-packages/pluggy/callers.py", line 187, in _multicall INTERNALERROR> res = hook_impl.function(*args) INTERNALERROR> File "~/foo/.venv/lib/python3.6/site-packages/pytest_sugar.py", line 171, in pytest_configure INTERNALERROR> sugar_reporter = SugarTerminalReporter(standard_reporter) INTERNALERROR> File "~/foo/.venv/lib/python3.6/site-packages/pytest_sugar.py", line 209, in __init__ INTERNALERROR> self.writer = self._tw INTERNALERROR> AttributeError: can't set attribute Note that the above environment is the result of installing the following requirements into a clean virtualenv:
pytest pytest-cov pytest-forked pytest-html pytest-metadata pytest-sugar pytest-xdist Uninstalling pytest-sugar fixes the issue, as does downgrading pytest to 5.3.5.
I've experienced this error with python 3.6.8 on Ubuntu 18.04, and python 3.7.3 on macOS Catalina.