[head tinderbox] failure on amd64/amd64

[FreeBSD Tinderbox]

TB --- 2013-11-14 14:40:18 - tinderbox 2.20 running on freebsd-current.sentex.ca
TB --- 2013-11-14 14:40:18 - 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 --- 2013-11-14 14:40:18 - starting HEAD tinderbox run for amd64/amd64
TB --- 2013-11-14 14:40:18 - cleaning the object tree
TB --- 2013-11-14 14:45:35 - /usr/local/bin/svn stat /src
TB --- 2013-11-14 14:45:38 - At svn revision 258133
TB --- 2013-11-14 14:45:39 - building world
TB --- 2013-11-14 14:45:39 - CROSS_BUILD_TESTING=YES
TB --- 2013-11-14 14:45:39 - MAKEOBJDIRPREFIX=/obj
TB --- 2013-11-14 14:45:39 - PATH=/usr/bin:/usr/sbin:/bin:/sbin
TB --- 2013-11-14 14:45:39 - SRCCONF=/dev/null
TB --- 2013-11-14 14:45:39 - TARGET=amd64
TB --- 2013-11-14 14:45:39 - TARGET_ARCH=amd64
TB --- 2013-11-14 14:45:39 - TZ=UTC
TB --- 2013-11-14 14:45:39 - __MAKE_CONF=/dev/null
TB --- 2013-11-14 14:45:39 - cd /src
TB --- 2013-11-14 14:45:39 - /usr/bin/make -B buildworld
>>> Building an up-to-date make(1)
>>> World build started on Thu Nov 14 14:45:46 UTC 2013
>>> Rebuilding the temporary build tree
>>> stage 1.1: legacy release compatibility shims
>>> stage 1.2: bootstrap tools
>>> stage 2.1: cleaning up the object tree
>>> stage 2.2: rebuilding the object tree
>>> stage 2.3: build tools
>>> stage 3: cross tools
>>> stage 4.1: building includes
>>> stage 4.2: building libraries
>>> stage 4.3: make dependencies
>>> stage 4.4: building everything
[...]
c++  -O2 -pipe -Qunused-arguments -fstack-protector -Wsystem-headers -Werror -Wno-empty-body -Wno-string-plus-int -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-conversion -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter -Wno-parentheses -Wno-c++11-extensions -I/src/gnu/usr.bin/gperf/../../../contrib/gperf/lib -I/src/gnu/usr.bin/gperf -c /src/gnu/usr.bin/gperf/../../../contrib/gperf/src/output.cc
/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/output.cc:782:11: error: format string is empty [-Werror,-Wformat-zero-length]
          "", option.get_size_type());
          ^~
/src/gnu/usr.bin/gperf/../../../contrib/gperf/src/output.cc:1910:11: error: format string is empty [-Werror,-Wformat-zero-length]
          "", option.get_size_type());
          ^~
2 errors generated.
*** Error code 1

Stop.
bmake[4]: stopped in /src/gnu/usr.bin/gperf
*** Error code 1

Stop.
bmake[3]: stopped in /src/gnu/usr.bin
*** Error code 1

Stop.
bmake[2]: stopped in /src/gnu
*** Error code 1

Stop.
bmake[1]: stopped in /src
*** Error code 1

Stop.
bmake: stopped in /src
*** Error code 1

Stop in /src.
TB --- 2013-11-14 17:32:28 - WARNING: /usr/bin/make returned exit code  1 
TB --- 2013-11-14 17:32:28 - ERROR: failed to build world
TB --- 2013-11-14 17:32:28 - 8312.62 user 1328.08 system 10329.94 real


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