The point is that the faster migration is only applied if the package
has an autopkgtest and it runs successfully on all architectures where
binaries are available. In this case, you only disabled the
autopkgtest on 32 bit archs, but the binaries are still successfully
build.
I know it is only 1 days but it was the same with the previous
migration
https://tracker.debian.org/pkg/cctbx
thanks for the explainations and even better a way to fix this :)
Make sure that there are non-trivial passing tests those archs :)
(please don't cheat [1]). The alternative (if the binaries don't work
on these architectures) is to stop building there and ask the
ftpmasters to remove the old ones.