make world problem

[John Lee]

Dear All,

I installed a clean 4.10-RC2 and CVSUP to the latest,
while makeing world, I encountered this error
and tried a few times but same error. Please advise.
I'm using a P4 2.8Ghz 1U server system.

>>> stage 1: bootstrap tools
--------------------------------------------------------------
cd /usr/src; MAKEOBJDIRPREFIX=/usr/obj/usr/src/i386  DESTDIR=  INSTALL="sh
/usr/src/tools/install.sh" make -f
Makefile.inc1 -DBOOTSTRAPPING  -DNOHTML -DNOINFO -DNOMAN -DNOPIC -DNOPROFILE
 -DNOSHARED  -DNO_WERROR bootstrap-tools
echo "===> usr.bin/yacc";  cd /usr/src/usr.bin/yacc;  make
DIRPRFX=usr.bin/yacc/ obj;  make DIRPRFX=usr.bin/yacc/ depend;  make
DIRPRFX=usr.bin/yacc/ all;  make DIRPRFX=usr.bin/yacc/
DESTDIR=/usr/obj/usr/src/i386 install
===> usr.bin/yacc
cd: can't cd to /usr/src/usr.bin/yacc
*** Error code 2

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.
*** Error code 1

Stop in /usr/src.