orphan mcollective [1] ruby-stomp [2]. The maintainer for these has not updated them despite having been 1) notified by email years ago by out-of-date flags 2) my having personally emailed him over a month ago 3) provided with suitabled updated pkgbuilds.
[1] https://aur.archlinux.org/packages/mcollective/ [2] https://aur.archlinux.org/packages/ruby-stomp/