This also breaks the Dockerfile build as it later fails with:
IOError: [Errno 2] No such file or directory: '/tmp/pip-install-Sleu1m/sioworkers/setup.py'
Failed building wheel for sioworkers

oioioi:

pip2 install -v -r requirements.txt --user
Running setup.py (path:/tmp/pip-build-gHTyzR/sioworkers-1.3/setup.py) egg_info for package sioworkers-1.3 produced metadata for project name sioworkers. Fix your #egg=sioworkers-1.3 fragments.

pip3 install -v -r requirements_py3.txt --user
Running setup.py (path:/tmp/pip-build-ejhda9zq/supervisor-4.0.0.dev0/setup.py) egg_info for package supervisor-4.0.0.dev0 produced metadata for project name supervisor. Fix your #egg=supervisor-4.0.0.dev0 fragments.
Running setup.py (path:/tmp/pip-build-or9bj9rm/djsupervisor-0.4.0/setup.py) egg_info for package djsupervisor-0.4.0 produced metadata for project name django-supervisor. Fix your #egg=djsupervisor-0.4.0 fragments.
Running setup.py (path:/tmp/pip-build-or9bj9rm/filetracker-1.1.0/setup.py) egg_info for package filetracker-1.1.0 produced metadata for project name filetracker. Fix your #egg=filetracker-1.1.0 fragments.
Running setup.py (path:/tmp/pip-build-or9bj9rm/sioworkers-1.3/setup.py) egg_info for package sioworkers-1.3 produced metadata for project name sioworkers. Fix your #egg=sioworkers-1.3 fragments.

sioworkers:

pip3 install -v -r requirements_py3.txt --user
Running setup.py (path:/tmp/pip-build-j089pd0e/poster-0.8.1/setup.py) egg_info for package poster-0.8.1 produced metadata for project name poster. Fix your #egg=poster-0.8.1 fragments.