Example: https://evergreen.mongodb.com/task_log_raw/mongo_ruby_driver_enterprise_auth_tests_debian__auth_and_ssl~auth_and_ssl_ruby~ruby_2.5_enterprise_auth_tests_patch_0cd8f37fe9f96ce4399ca53e1795a557f056dd5c_5bd239360305b92f925dcae3_18_10_25_21_44_23/0?type=T

Looks like the first test is succeeding, the second one is failing.

Need to check authenticating twice on the same client and authenticating once per client with two clients to hopefully narrow this down.