An attempt to move the three remaining jobs to stretch was performed today, but I had to revert it later due to some venv issues.

I've created a virtualenv with:
*pip install irc
*git clone https://github.com/sixohsix/python-irclib.git (http://python-irclib.sourceforge.net/)
*pip install MySQL-python (https://pypi.org/project/MySQL-python/)
Now bots are running (via "source venv/bin/activate"+restart script) in the virtualenv but we need to update crontab (or bash scripts) to start using it

Note that you should issue those jobs and crontab via login-stretch.tools.wmflabs.org :)