A few entries per day are normal, a few dozens or hundreds probably not. Sun Dec 4 22:24:37 UTC 2016 - https://jenkins.debian.net/job/reproducible_builder_armhf_18/17334/console got remote error with exit code 255 from odxu4b-armhf-rb.debian.net for build #1 for neutron-lbaas on testing/armhf