Systrace on chroot, Segmentation fault

[Joost Tr]

Is it possible to run systrace on chroot? I get a segmentation fault.
On OpenBSD 3.8-current (GENERIC), Sep 23 2005, i386.

$ su
# chroot -u root /  /bin/sh
# exit
This works.

# systrace -a chroot -u root /  /bin/sh
Segmentation fault (core dumped)
This does not.