MarsSeed [1] filed a deletion request for ruby-mini_magick-4 [2]: Orphaned legacy version of ruby-mini_magick; not needed by any dependents. AUR has a ruby-mini_magick package for the current version. So safe to delete this old one.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ruby-mini_magick-4/
