This build shows as green:

https://evergreen.mongodb.com/task/mongodb_cpp_driver_dev_ubuntu1404_debug_compile_and_test_a0df86e99acab1479650149f8cff9b0a97189ecc_16_01_12_18_22_53

But it didn't actually pass:

https://evergreen.mongodb.com/task_log_raw/mongodb_cpp_driver_dev_ubuntu1404_debug_compile_and_test_a0df86e99acab1479650149f8cff9b0a97189ecc_16_01_12_18_22_53/0?type=T#L1110

Note that this also shows that we need to support GCC 4.8. I will file a a separate ticket for that.

Please note also what happens when CMake fails after the compiler minima change went in:

https://evergreen.mongodb.com/task/mongodb_cpp_driver_dev_ubuntu1404_debug_compile_and_test_e23f9ea61828872a129c89fc8deeaa2647dfd699_16_01_12_18_40_16

Even though the CMake step failed, it still tried to run the tests. We are ignoring failed exit statuses somehow.