/dev messed up in rawhide

[Bruno Wolff III]

I hadn't rebooted in a few days, so I am not sure where this got broken.
A number of /dev entries are group owner by lego that shouldn't be.
Also a number have the wrong mode. For example /dev/null isn't accessible
by everyone, /dev/randon and /dev/urandom are not readable by everyone.

The X startup is hanging, probably because of this.

Anyone got any ideas which component is responsible for this?