ubuntu 16.04 runner broken by software updates
automatic software updates are probably breaking the ubuntu 16.04 runner by locking out apt:
http://askubuntu.com/questions/855492/apt-get-could-not-open-lock-permanently
automatic software updates are probably breaking the ubuntu 16.04 runner by locking out apt:
http://askubuntu.com/questions/855492/apt-get-could-not-open-lock-permanently