See

https://mci.10gen.com/ui/task/mongodb_mongo_master_osx_108_cxx11_debug_95586f19acca1258a819930e206100efb1ce4000_13_11_25_01_14_06_parallel_osx_108

The logs don't show up in MCI because the task timed out, but they can be accessed at

http://buildlogs.mongodb.org/mci_0.9_osx_108_cxx11_debug/builds/11077/test/parallel_0/basic.js

My guess is this is intermittent, since there's nothing in the change in question or the one before it that should have broken basic.js