:dustin was surprised this doesn't work. I suspect(ed) it is bad password. But :dustin promised he would take a look. sudo su - fails as well, but is a seperate issue.
The password is correct - it works for SSH - so this must be a configuration of su. I'm not sure how to fix that. We should be using SSH key auth to get to root, anyway, so I'm not terribly concerned about this - but happy to see it fixed if someone knows how.
Also, 'sudo su -' is the better method for getting root access from a username, and that *should* be working, but I haven't verified that it does.
Hm, 'sudo su -' actually shouldn't be working; I'm not sure why I said that. We could change that policy, essentially giving cltbld unlimited sudo access -- but is that a good idea?
Relops/releng discussed cltbld's privs before we rolled out 10.8 and decided that we really didn't WANT it to be an admin user and be able to escalate privs, so this is as expected. Since OS X based on freebsd, cltbld can't su because it's not an administrative user (see http://www.themacosxserveradmin.com/2011/10/getting-root-on-os-x.html for a more in depth explanation). The ALL priv for sudo only applies to root and the administrative user, so it also doesn't apply to cltbld. If you want root access, ssh in as root with key auth.