You can drop the prerelease tarball. https://www.kernel.org/pub/linux/kernel/people/mason/btrfs-progs/ Reproducible: Always
Thanks for the report. +*btrfs-progs-3.14.1 (29 Apr 2014) + + 29 Apr 2014; Mike Gilbert <floppym@gentoo.org> +btrfs-progs-3.14.1.ebuild: + Version bump, bug 509022 by Fabian Henze.