Hello, After adding sys-fs/loop-aes-3.1c the util-linux should also be updated. There is no change to util-linux since loop-aes-3.1b, but it would cleaner to update the util-linux so it will be depended on loop-aes-3.1c. The ebuild reversion may be left 2... Since there is no change.
Created attachment 77739 [details, diff] util-linux.diff
2.12r-r3 now in portage with new loop-aes, thanks for the bug