Can no longer build clean jail using make world

I just updated my tinderbox machine to 6.0-CURRENT, and I'm trying to
build a clean 6.0-CURRENT jail.  I'm using the new make(1), and I do not
have MAKEOBJDIRPREFIX set anywhere.  The script I'm using basically
does:

rm -rf /space/jails/6-CURRENT/tmp
mkdir -p /space/jails/6-CURRENT/tmp
cd /space/jails/6-CURRENT/src
make world DESTDIR=/space/jails/6-CURRENT/tmp

(Basically taken right out of the jail(8) man page.)

This is the error I get:

--------------------------------------------------------------
>>> stage 1.2: bootstrap tools
--------------------------------------------------------------
cd /space/jails/6-CURRENT/src;
MAKEOBJDIRPREFIX=/usr/obj/space/jails/6-CURRENT/src/i386  DESTDIR= 
INSTALL="sh /space/jails/6-CURRENT/src/tools/install.sh" 
PATH=/usr/obj/space/jails/6-CURRENT/src/i386/legacy/usr/sbin:/usr/obj/space/jails/6-CURRENT/src/i386/legacy/usr/bin:/usr/obj/space/jails/6-CURRENT/src/i386/legacy/usr/games:/sbin:/bin:/usr/sbin:/usr/bin  WORLDTMP=/usr/obj/space/jails/6-CURRENT/src/i386  MAKEFLAGS="-m /space/jails/6-CURRENT/src/tools/build/mk  DESTDIR=/space/jails/6-CURRENT/tmp -m /space/jails/6-CURRENT/src/share/mk" make -f Makefile.inc1  BOOTSTRAPPING=600000  -DNOHTML -DNOINFO -DNOLINT -DNOMAN -DNOPIC -DNOPROFILE  -DNOSHARED -DNO_CPU_CFLAGS -DNO_WARNS bootstrap-tools
===> games/fortune/strfile
/usr/obj/space/jails/6-CURRENT/src/i386/space/jails/6-CURRENT/src/games/fortune/strfile created for /space/jails/6-CURRENT/src/games/fortune/strfile
rm -f .depend
mkdep -f .depend -a   
-I/usr/obj/space/jails/6-CURRENT/src/i386/legacy/usr/include
/space/jails/6-CURRENT/src/games/fortune/strfile/strfile.c
echo strfile: /space/jails/6-CURRENT/tmp/usr/lib/libc.a
/usr/obj/space/jails/6-CURRENT/src/i386/legacy/usr/lib/libegacy.a >>
.depend
cc -O -pipe 
-I/usr/obj/space/jails/6-CURRENT/src/i386/legacy/usr/include -c
/space/jails/6-CURRENT/src/games/fortune/strfile/strfile.c
make: don't know how to make /space/jails/6-CURRENT/tmp/usr/lib/libc.a.
Stop
*** Error code 2

What am I missing?  Thanks.

Joe

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