The "start_mongo_orchestration" Evergreen script on OS X fails to run the mongo-orchestration daemon. The mongo-orchestration logs need to be examined to determine why the daemon failed to start.

Link to example failure: https://evergreen.mongodb.com/task/cxx_driver_legacy_os_x_107_client_test_latest_a26e0869efe88787f41a0c96befbbf3fef67eda6_17_01_30_22_16_25

Relevant excerpt from task logs:

 [2017/01/30 17:49:19.769] Preparing to start mongo-orchestration daemon
 [2017/01/30 17:49:19.769] Daemon process started with pid: 75085
 [2017/01/30 17:49:19.769] Could not connect to daemon running on localhost:8889 (pid: 75085) within 5 attempts.