ewangreen4 [1] filed a deletion request for ptcollab-git [2]:

The submission of this package to the AUR has caused unforeseen crashes related to std::vector that can only be fixed upstream. The errors are not exhibited when built locally, so I don't think it's appropriate for this package to remain on the AUR for the time being.

[1] https://aur.archlinux.org/account/ewangreen4/ [2] https://aur.archlinux.org/pkgbase/ptcollab-git/