Comment 82 for bug 2055114

These are warning and won't affect the functionality of fail2ban. They also appear in the version prior to proposed and are unrelated to the missing dependencies. Please run "$ systemctl status fail2ban" and confirm if fail2ban has an active status when installed from proposed if you would like to verify if the patch resolved the issue.

From the warning messages I can tell they originate from unit test files and are caused by the python interpreter failing to understand escape sequences for expressions that will be ran by the shell and not by python.

Hope this helps clarify things.