fast/js/exec-state-marking.html crashed once while handling Messages::WebIconDatabase::RetainIconForPageURL in the UI process on SnowLeopard Intel Release (WebKit2 Tests). See the backtrace here: http://build.webkit.org/results/SnowLeopard%20Intel%20Release%20(WebKit2%20Tests)/r82571%20(10236)/fast/js/exec-state-marking-crash-log.txt
<rdar://problem/9214550>