I noticed https://github.com/tox-dev/tox/issues/1183 and I suspect the
problem is in how `tox` and `trial` are using sub-processes for
parallel work. I know that Flake8 uses sub-processes as well (via
multiprocessing) so I'd be unsurprised if this eventually shows up in
Flake8's issue tracker. I don't recall how pylint does parallel
processing, but if it's anything like Flake8, I'm guessing they might
see it soon too for large enough code-bases.
I wanted to give y'all a heads up in case you notice or get reports about this.