[head tinderbox] failure on sparc64/sparc64

[FreeBSD Tinderbox]

TB --- 2008-08-16 22:59:40 - tinderbox 2.4 running on ref7-amd64.freebsd.org
TB --- 2008-08-16 22:59:40 - starting HEAD tinderbox run for sparc64/sparc64
TB --- 2008-08-16 22:59:40 - cleaning the object tree
TB --- 2008-08-16 22:59:43 - WARNING: /obj/sparc64/src/usr.sbin: Directory not empty
TB --- 2008-08-16 22:59:43 - ERROR: unable to remove old object directory
TB --- 2008-08-16 22:59:43 - tinderbox aborted
TB --- 0.15 user 1.02 system 3.48 real


http://tinderbox.des.no/tinderbox-vimage-HEAD-sparc64-sparc64.full