MarsSeed [1] filed a deletion request for rsb-spread-cpp-stable-git [2]: Orphaned VCS package, last updated in 2017. The https://projects.cor-lab.org website's SSL certificate has expired; shows empty page with loginwall. (cor-lab.org redirects to new "Cor-Lab" site of Universität Bielefeld) The source is also not available, the university's git server cannot connect. No public alternatives or mirrors can be found via quick Google search. Safe to delete this package; nothing depends on it. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/rsb-spread-cpp-stable-git/