Version 3.3.7-1 of shairport-sync is marked for autoremoval from testing on Sat 29 May 2021. It depends (transitively) on mosquitto, affected by #983429, #986701. You should try to prevent the removal by fixing these RC bugs.
This package will soon be part of the auto-openssl transition. You might want to ensure that your package is ready for it.
You can probably find supplementary information in the
debian-release
archives or in the corresponding
release.debian.org
bug.
![[bug history graph]](https://qa.debian.org/data/bts/graphs/s/shairport-sync.png){kind=link}