integration-slave-jessie CI instances use the Puppet package_builder which generates some base cow images.
I had a build targeting buster that fails with:
E: Failed to fetch http://mirrors.wikimedia.org/debian/pool/main/s/systemd/libsystemd-dev_241-5_amd64.deb: 404 Not Found [IP: 208.80.154.15 80]
Looking at the host integration-slave-jessie-1004.integration.eqiad.wmflabs and trying to run the update:
# crontab -l|grep buster # Puppet Name: cowbuilder_update_buster-amd64 34 7 * * * /usr/sbin/cowbuilder --update --basepath "/srv/pbuilder/base-buster-amd64.cow" >/dev/null 2>&1
# /usr/sbin/cowbuilder --update --basepath "/srv/pbuilder/base-buster-amd64.cow" -> Copying COW directory forking: rm -rf /var/cache/pbuilder/build//cow.28076 forking: cp -al /srv/pbuilder/base-buster-amd64.cow /var/cache/pbuilder/build//cow.28076 I: removed stale ilistfile /var/cache/pbuilder/build//cow.28076/.ilist -> Invoking pbuilder forking: pbuilder update --buildplace /var/cache/pbuilder/build//cow.28076 --no-targz --internal-chrootexec chroot /var/cache/pbuilder/build//cow.28076 cow-shell W: /root/.pbuilderrc does not exist I: Running in no-targz mode I: Current time: Tue Oct 29 14:24:27 UTC 2019 I: pbuilder-time-stamp: 1572359067 I: copying local configuration I: mounting /proc filesystem I: mounting /run/shm filesystem I: mounting /dev/pts filesystem I: policy-rc.d already exists I: Refreshing the base.tgz I: upgrading packages Get:1 http://mirrors.wikimedia.org/debian buster InRelease [122 kB] Reading package lists... E: Repository 'http://mirrors.wikimedia.org/debian buster InRelease' changed its 'Suite' value from 'testing' to 'stable' I: unmounting dev/pts filesystem I: unmounting run/shm filesystem I: unmounting proc filesystem pbuilder update failed E: could not update with cowdancer, try --no-cowdancer-update option forking: rm -rf /var/cache/pbuilder/build//cow.28076
E: Repository 'http://mirrors.wikimedia.org/debian buster InRelease' changed its 'Suite' value from 'testing' to 'stable'
I guess because the cowimage has been created before buster got cut as stable?