[head tinderbox] failure on amd64/amd64

[FreeBSD Tinderbox]

TB --- 2006-01-28 12:38:01 - tinderbox 2.3 running on freebsd-current.sentex.ca
TB --- 2006-01-28 12:38:01 - starting HEAD tinderbox run for amd64/amd64
TB --- 2006-01-28 12:38:01 - cleaning the object tree
TB --- 2006-01-28 12:38:38 - checking out the source tree
TB --- 2006-01-28 12:38:38 - cd /tinderbox/HEAD/amd64/amd64
TB --- 2006-01-28 12:38:38 - /usr/bin/cvs -f -R -q -d/home/ncvs update -Pd -A src
TB --- 2006-01-28 12:45:33 - building world (CFLAGS=-O2 -pipe)
TB --- 2006-01-28 12:45:33 - cd /src
TB --- 2006-01-28 12:45:33 - /usr/bin/make -B buildworld
>>> 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
>>> stage 5.1: building 32 bit shim libraries
TB --- 2006-01-28 14:18:01 - generating LINT kernel config
TB --- 2006-01-28 14:18:01 - cd /src/sys/amd64/conf
TB --- 2006-01-28 14:18:01 - /usr/bin/make -B LINT
TB --- 2006-01-28 14:18:01 - building LINT kernel (COPTFLAGS=-O2 -pipe)
TB --- 2006-01-28 14:18:01 - cd /src
TB --- 2006-01-28 14:18:01 - /usr/bin/make buildkernel KERNCONF=LINT
>>> Kernel build for LINT started on Sat Jan 28 14:18:01 UTC 2006
>>> stage 1: configuring the kernel
>>> stage 2.1: cleaning up the object tree
>>> stage 2.2: rebuilding the object tree
>>> stage 2.3: build tools
>>> stage 3.1: making dependencies
[...]
awk -f /src/sys/tools/makeobjops.awk /src/sys/libkern/iconv_converter_if.m -h
awk -f /src/sys/tools/makeobjops.awk /src/sys/pci/agp_if.m -h
awk -f /src/sys/tools/makeobjops.awk /src/sys/dev/acpica/acpi_if.m -h
rm -f .newdep
/usr/bin/make -V CFILES -V SYSTEM_CFILES -V GEN_CFILES |  MKDEP_CPP="cc -E" CC="cc" xargs mkdep -a -f .newdep -O2 -pipe -fno-strict-aliasing  -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual  -fformat-extensions -std=c99  -nostdinc -I-  -I. -I/src/sys -I/src/sys/contrib/altq -I/src/sys/contrib/ipfilter -I/src/sys/contrib/pf -I/src/sys/contrib/dev/ath/freebsd -I/src/sys/contrib/ngatm -I/src/sys/dev/twa -I/src/sys/gnu/fs/xfs/FreeBSD -I/src/sys/gnu/fs/xfs/FreeBSD/support -I/src/sys/gnu/fs/xfs -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -fno-common -finline-limit=8000 --param inline-unit-growth=100 --param large-function-growth=1000 -DGPROF -falign-functions=16 -DGPROF4 -DGUPROF -fno-builtin -fno-omit-frame-pointer -mcmodel=kernel -mno-red-zone  -mfpmath=387 -mno-sse -mno-sse2 -mno-mmx -mno-3dnow  -msoft-float -fno-asynchronous-unwind-tables -ffreestanding
In file included from /src/sys/kern/kern_rwlock.c:44:
/src/sys/sys/rwlock.h:36:25: sys/_rwlock.h: No such file or directory
mkdep: compile failed
*** Error code 1

Stop in /obj/amd64/src/sys/LINT.
*** Error code 1

Stop in /src.
*** Error code 1

Stop in /src.
TB --- 2006-01-28 14:20:02 - WARNING: /usr/bin/make returned exit code  1 
TB --- 2006-01-28 14:20:02 - ERROR: failed to build lint kernel
TB --- 2006-01-28 14:20:02 - tinderbox aborted
TB --- 1.24 user 6.79 system 6121.16 real