alpine-devel archive is not updated
it seems like http://lists.alpinelinux.org/alpine-devel/ has not been updated since around Nov 7, 2013 (today its Dec 2)
(from redmine: issue id 2449, created on 2013-12-02, closed on 2013-12-09)
To upload designs, you'll need to enable LFS and have admin enable hashed storage. More information