How to install Rawhide?

[Michael Schwendt]

fedup --network rawhide --nogpgcheck

 - a bit of progress
 - it downloads ~1500 packages
 - it lists a screen full of packages without update
 - I reboot with the added boot menu entry

upgrade prep complete, switching root
failed to log coredump - connection refused

An early end. Nothing happens. Can't even enter anything on any
virtual console. Same for "fedup --network 22 --nogpgcheck".