Please bump feh to 2.13 Renameing feh-2.12.1.ebuild to feh-2.13.ebuild works for me.. Reproducible: Always
2.13.1 is the latest release (from May 24).
+*feh-2.13.1 (05 Jun 2015) + + 05 Jun 2015; Markos Chandras <hwoarang@gentoo.org> +feh-2.13.1.ebuild: + Version bump. Bug #550494