haruue [1] filed a deletion request for linux-mainline-usermode [2]: linux-usermode is update to date now, and can be changed version to build the mainline kernel, this package will be no longer needed anymore.
[1] https://aur.archlinux.org/account/haruue/ [2] https://aur.archlinux.org/pkgbase/linux-mainline-usermode/
