debci 3.14 broke autopkgtests jobs that were using *-backports as RELEASE, and this is fixed in 3.14.1 which is now in unstable. However to fix the pipelines, you need to update the pipeline/autopkgtest* images, which in turn also requires to update the patches in https://salsa.debian.org/salsa-ci-team/pipeline/-/tree/master/images/patches/autopkgtest. It would be very nice if someone could handle that. Thank you in advance. PS: Did you submit the above patches to the Debian CI team? It would be nice if that fork could be avoided in particular since you are running packages out of unstable anyway...