[DRE-maint] ruby-librarian is marked for autoremoval from testing

[Debian testing autoremoval watch]

ruby-librarian 0.6.4-3 is marked for autoremoval from testing on 2021-11-25

It is affected by these RC bugs:
996312: ruby-librarian: FTBFS with ruby3.0: ERROR: Test "ruby3.0" failed:       ArgumentError: tried to create Proc object without a block
 https://bugs.debian.org/996312



This mail is generated by:
https://salsa.debian.org/release-team/release-tools/-/blob/master/mailer/mail_autoremovals.pl

Autoremoval data is generated by:
https://salsa.debian.org/qa/udd/-/blob/master/udd/testing_autoremovals_gatherer.pl