Bug#493065: same story here.
Hello. I confirm that this bug is still there today.
I can reproduce it by running this command on an amd64 system.
fakeroot -s fakechroot.save fakechroot /usr/sbin/debootstrap --arch i386
--variant=fakechroot lenny 32bit-chroot http://ftp.fr.debian.org/debian/
the debootstrap.log file contains :
chroot: failed to run command `dpkg': No such file or directory
that makes me suspect something has changed from parent ... but
nonetheless this problem still stands.