old-run-webkit-tests doesn't save crash logs on Mac when the web process crashes. For example: http://build.webkit.org/results/SnowLeopard%20Intel%20Release%20(WebKit2%20Tests)/r80001%20(9140)/results.html
<rdar://problem/9068625>
I think this will be fixed by the fix for bug 44121. *** This bug has been marked as a duplicate of bug 44121 ***