A few entries per day are normal, a few dozens or hundreds probably not. Tue Dec 1 17:42:05 UTC 2015 - https://jenkins.debian.net/job/reproducible_builder_amd64_18/8667/console got remote error with exit code 143 from profitbricks-build2-amd64.debian.net for build #1 for woo on unstable/amd64