panic: Unrecoverable machine check exception

I'm trying to get my server to a stable build of current so I can run a
current poudriere jail alongside my 9.1 and 8.4 environments for testing
package building. This server runs several other jails that host all the
other services on my server. Coredump, etc can be found here:
http://feld.me/freebsd/r251046/

Any suggestions on how to work around this so I can stabilize my build
server would be appreciated.