Not sure if tox got an update but recently our tox-conda builds output this:
...
File "/opt/hostedtoolcache/Python/3.7.0/x64/lib/python3.7/site-packages/pluggy/callers.py", line 208, in _multicall
return outcome.get_result()
File "/opt/hostedtoolcache/Python/3.7.0/x64/lib/python3.7/site-packages/pluggy/callers.py", line 80, in get_result
raise ex[1].with_traceback(ex[2])
File "/opt/hostedtoolcache/Python/3.7.0/x64/lib/python3.7/site-packages/pluggy/callers.py", line 187, in _multicall
res = hook_impl.function(*args)
File "/opt/hostedtoolcache/Python/3.7.0/x64/lib/python3.7/site-packages/tox_conda/plugin.py", line 100, in tox_testenv_create
venv.session.make_emptydir(venv.path)
AttributeError: 'VirtualEnv' object has no attribute 'session'
Not sure if tox got an update but recently our tox-conda builds output this:
An example of the full trackback is here: https://dev.azure.com/sunpy/sunpy/_build/results?buildId=1350&view=logs
I am not sure what to make of this error.