a821 [1] filed a deletion request for mcabber-crew-hg-extended [2]: Package was last updated 7 years ago, never modernized. No votes. The sources are missing; bitbucket deprecated mercurial repositories long ago and the URL of the repo gives 404.
[1] https://aur.archlinux.org/account/a821/ [2] https://aur.archlinux.org/pkgbase/mcabber-crew-hg-extended/