why is marked for autoremoval from testing

[Debian testing autoremoval watch]

why 2.40-3 is marked for autoremoval from testing on 2019-03-07

It (build-)depends on packages with these RC bugs:
916369: libcoq-ocaml: libcoq-ocaml depends and build-depends on cruft packages.
918633: why3-coq: package should Depend on a specific Coq version