Tests fail to run at maint/8.0.x

Check out the code at maint/8.0.x, and the tests fail to run:

cheroot maint/8.0.x $ tox -r                                                                                                                                              
python recreate: /Users/jaraco/code/public/cherrypy/cheroot/.tox/python
python installdeps: setuptools>=31.0.1
python develop-inst: /Users/jaraco/code/public/cherrypy/cheroot
python installed: apipkg==1.5,attrs==19.3.0,certifi==2020.4.5.1,cffi==1.14.0,chardet==3.0.4,-e git+gh://cherrypy/cheroot@679bc266717de634a4ca8877a70deff12920c57e#egg=cheroot,codecov==2.0.15,colorama==0.4.3,coverage==4.5.3,cryptography==2.9,docopt==0.6.2,execnet==1.7.1,idna==2.9,jaraco.functools==3.0.0,more-itertools==8.2.0,packaging==20.3,pathtools==0.1.2,pluggy==0.13.1,py==1.8.1,pycparser==2.20,pyOpenSSL==19.1.0,pyparsing==2.4.7,pytest==5.4.1,pytest-cov==2.7.1,pytest-forked==1.1.3,pytest-mock==1.10.4,pytest-sugar==0.9.2,pytest-testmon==1.0.2,pytest-watch==4.2.0,pytest-xdist==1.31.0,requests==2.23.0,requests-unixsocket==0.2.0,six==1.14.0,termcolor==1.1.0,trustme==0.6.0,urllib3==1.25.8,watchdog==0.10.2,wcwidth==0.1.9
python run-test-pre: PYTHONHASHSEED='1827473805'
python run-test: commands[0] | pytest --testmon-off
ERROR: usage: pytest [options] [file_or_dir] [file_or_dir] [...]
pytest: error: unrecognized arguments: --testmon-off
  inifile: /Users/jaraco/code/public/cherrypy/cheroot/pytest.ini
  rootdir: /Users/jaraco/code/public/cherrypy/cheroot

ERROR: InvocationError for command /Users/jaraco/code/public/cherrypy/cheroot/.tox/python/bin/pytest --testmon-off (exited with code 4)
________________________________________________________________________________ summary _________________________________________________________________________________
ERROR:   python: commands failed

I don’t know what --testmon-off is, but searching for that error, I found no results on a web search.

[jaraco]

Thanks, so awesome! This will really help in troubleshooting issues with #277.

[webknjaz]

Alright, it’s green now. I’ve also added a cron job for it.