Checking buildworld success from ssh

Hi all,

I started a buildworld on current sources this morning, but,
foolishly, didn't redirect the output to a file. Now I have some
free time at work and would like to ssh in and do the kernel and
mergemaster. Of course, I don't want to do these things if
buildworld failed. Is there any way I can tell in the absence of
saved output?

Thanks.

Greg