libuser fails to compile with compiler flags which elevate common string formatting issues into an error (-Wformat -Wformat-security -Werror=format-security).
At, http://lists.openembedded.org/pipermail/openembedded-core/2016-May/121478.html
Merge at, http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?h=master-next&id=65238546b7c069540b64903d5c3afbaa332bfbff