int  filed a orphan request for perl-sereal-decoder :
The packages (perl-sereal, -encoder and -decoder) were flagged out-of- date a while ago. I tried to contact the package maintainer about two month ago and a week ago again. No reaction. So I think I take the packages.
 https://aur.archlinux.org/account/int/  https://aur.archlinux.org/pkgbase/perl-sereal-decoder/