===== Building live filesystems =====
Thu Jan  4 02:56:01 UTC 2018
ubuntu-mate-amd64 on Launchpad starting at 2018-01-04 02:56:01
ubuntu-mate-amd64: https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/xenial/ubuntu-mate/+build/120066
ubuntu-mate-i386 on Launchpad starting at 2018-01-04 02:56:03
ubuntu-mate-i386: https://launchpad.net/~ubuntu-cdimage/+livefs/ubuntu/xenial/ubuntu-mate/+build/120067
lockfile: Sorry, giving up on "/srv/cdimage.ubuntu.com/etc/.build-image-set-pids.lock"