I am getting test failures when building in a chroot, full logs: https://paste.xinu.at/GrF/
I did not get it at the time when tox 2.0.1 was released, but as you can see in the logs, 2.0.1 fails now. I'm still trying to figure out what changed during the time (maybe due to a pip upgrade or something?).
I have also tried to specify HOME but that didn't help.