Cant boot appears to be effecting all devices according to CM IRC right now.

Edit:
[21:29] <angelsl> i just looked through the build logs for the 6/9 nightlies
[21:29] <angelsl> seems like they failed to sync the proprietary blobs repositories from GH
..
[21:32] <angelsl> this line: cp: cannot stat ‘/opt/jenkins/android/workspace/android/build_env/cm-10.2.xml’: No such file or directory

This is why the download is over 10mb lighter than normal