Hi,
I have orphaned rubygem-erubis. It is dead upstream for almost 10 years and it is FTBFS with every major version of Ruby. There is available rubygem-erubi, which is properly maintained and most of the projects already switched. The only remaining dependency in Fedora is rubygem-asciidoctor, where there is upstream fix available and I have prepared PR backporting the fix into Fedora [1]. It is time to let this package go.
Vít
[1] https://src.fedoraproject.org/rpms/rubygem-asciidoctor/pull-request/4