[head tinderbox] failure on powerpc/powerpc

[FreeBSD Tinderbox]

TB --- 2008-08-17 17:21:01 - tinderbox 2.4 running on ref7-amd64.freebsd.org
TB --- 2008-08-17 17:21:01 - starting HEAD tinderbox run for powerpc/powerpc
TB --- 2008-08-17 17:21:01 - WARNING: /scratch/tmp/des/HEAD/powerpc/powerpc/lock: flock(): Resource temporarily unavailable
TB --- 2008-08-17 17:21:01 - ERROR: unable to lock sandbox
TB --- 2008-08-17 17:21:01 - tinderbox aborted
TB --- 0.03 user 0.02 system 0.04 real


http://tinderbox.des.no/tinderbox-vimage-HEAD-powerpc-powerpc.full