[head tinderbox] failure on amd64/amd64

[FreeBSD Tinderbox]

TB --- 2013-05-16 21:20:13 - tinderbox 2.10 running on freebsd-current.sentex.ca
TB --- 2013-05-16 21:20:13 - FreeBSD freebsd-current.sentex.ca 8.3-PRERELEASE FreeBSD 8.3-PRERELEASE #0: Mon Mar 26 13:54:12 EDT 2012     des at freebsd-current.sentex.ca:/usr/obj/usr/src/sys/GENERIC  amd64
TB --- 2013-05-16 21:20:13 - starting HEAD tinderbox run for amd64/amd64
TB --- 2013-05-16 21:20:13 - cleaning the object tree
TB --- 2013-05-16 21:20:13 - /usr/local/bin/svn stat /src
TB --- 2013-05-16 21:20:17 - At svn revision 250718
TB --- 2013-05-16 21:20:18 - building world
TB --- 2013-05-16 21:20:18 - CROSS_BUILD_TESTING=YES
TB --- 2013-05-16 21:20:18 - MAKEOBJDIRPREFIX=/obj
TB --- 2013-05-16 21:20:18 - PATH=/usr/bin:/usr/sbin:/bin:/sbin
TB --- 2013-05-16 21:20:18 - SRCCONF=/dev/null
TB --- 2013-05-16 21:20:18 - TARGET=amd64
TB --- 2013-05-16 21:20:18 - TARGET_ARCH=amd64
TB --- 2013-05-16 21:20:18 - TZ=UTC
TB --- 2013-05-16 21:20:18 - __MAKE_CONF=/dev/null
TB --- 2013-05-16 21:20:18 - cd /src
TB --- 2013-05-16 21:20:18 - /usr/bin/make -B buildworld
>>> Building an up-to-date make(1)
--------------------------------------------------------------
"Makefile", line 114: Malformed conditional (${MK_BMAKE} != "no")
"Makefile", line 119: if-less endif
make: fatal errors encountered -- cannot continue
*** Error code 1

Stop in /src.
*** Error code 1

Stop in /src.
TB --- 2013-05-16 21:20:19 - WARNING: /usr/bin/make returned exit code  1 
TB --- 2013-05-16 21:20:19 - ERROR: failed to build world
TB --- 2013-05-16 21:20:19 - 1.68 user 2.73 system 5.52 real


http://tinderbox.freebsd.org/tinderbox-head-build-HEAD-amd64-amd64.full