Installing Tor 0.3.1.x from deb.torproject.org results in no logs in Ubuntu 17.04
Added these, update and upgrade,
deb tor+http://sdscoq7snqtznauu.onion/torproject.org tor-experimental-0.3.1.x-zesty main
deb-src tor+http://sdscoq7snqtznauu.onion/torproject.org tor-experimental-0.3.1.x-zesty main
After restarting my machine however and going to /var/log/tor
there were 0 logs in the log file.