bastelfreak [1] filed a orphan request for corosync [2]:
the PKGBUILD is broken since a few months and no response from the maintainer
[1] https://aur.archlinux.org/account/bastelfreak/ [2] https://aur.archlinux.org/pkgbase/corosync/
Request #5524 has been rejected by Kyrias [1]:
Fixed the same day
aur-requests@lists.archlinux.org