After a day's worth of playing with a working rawhide the other day, yesterday's rawhide reverted to locking up.
The anaconda in today's rsync'd rawhide abended during the install, which I reported to bugzilla. I then installed today's rawhide with a fedora 20 anaconda. The last rawhide boot message before the keyboard locked up announced the start of the gnome manager.
This is on real hardware, an asus p8z77-v le plus, 3770K 32GB and gtx 670.