Verification of xenial is positive as well:
2.1.3-4ubuntu0.6 $ grep -i cancel error_log I [13/Dec/2018:09:28:50 +0100] [Job 1] Canceling stuck job after 0 seconds.
2.1.3-4ubuntu0.7 $ grep -i -e cancel -e completed error_log I [13/Dec/2018:09:31:22 +0100] [Job 2] Job completed.
Verification of xenial is positive as well:
2.1.3-4ubuntu0.6 2018:09: 28:50 +0100] [Job 1] Canceling stuck job after 0 seconds.
$ grep -i cancel error_log
I [13/Dec/
2.1.3-4ubuntu0.7 2018:09: 31:22 +0100] [Job 2] Job completed.
$ grep -i -e cancel -e completed error_log
I [13/Dec/