a821 [1] filed a deletion request for stress++ [2]: Gihub repository is 404. Maintainer/developer wrote in 2022: I have stopped maintaining this package. I seriously doubt anyone was using it, but if so, I suggest having a look at the mprime package in the official repos. [1] https://aur.archlinux.org/account/a821/ [2] https://aur.archlinux.org/pkgbase/stress++/