Version 0.2.6-1 of ruby-diaspora-federation-rails is marked for autoremoval from testing on Sun 22 Mar 2020. It depends (transitively) on ruby-libxml, affected by #949493. You should try to prevent the removal by fixing these RC bugs.
Last update: 2020-02-26
Standards version of the package is outdated.
The package should be updated to follow the last version of Debian Policy
(Standards-Version 4.5.0 instead of