grassyloki [1] filed an orphan request for gpu-burn-git [2]: The pkgbuild is old and does not build properly, its running a version 3 years old. commit 671f4be is the latest and fixes compilation issues.
[1] https://aur.archlinux.org/account/grassyloki/ [2] https://aur.archlinux.org/pkgbase/gpu-burn-git/
