<http://buildbot.mongodb.org/builders/OS%20X%2010.4%2032-bit/builds/459/steps/test_3/logs/stdio>
<http://buildbot.mongodb.org/builders/OS%20X%2010.5%2064-bit/builds/646/steps/test_3/logs/stdio>

probably trying to use a freed object, not sure which one

let me know if you want me to work on it