A few entries per day are normal, a few dozens or hundreds probably not. Sat Dec 5 07:13:16 UTC 2015 - https://jenkins.debian.net/job/reproducible_builder_armhf_9/907/console got remote error with exit code 143 from odxu4-armhf-rb.debian.net for build #1 for ruby-mysql2 on unstable/armhf