Move back to 2.7 #4305

Job	Run time
pytorch_tutorial_build_worker (1, 15, linux.g5.12xlarge.nvidia.gpu)	15m 23s
pytorch_tutorial_build_worker (3, 15, linux.g5.4xlarge.nvidia.gpu)	22m 20s
pytorch_tutorial_build_worker (5, 15, linux.g5.4xlarge.nvidia.gpu)	20m 58s
pytorch_tutorial_build_worker (9, 15, linux.g5.4xlarge.nvidia.gpu)	18m 22s
pytorch_tutorial_build_worker (8, 15, linux.g5.4xlarge.nvidia.gpu)	15m 15s
pytorch_tutorial_build_worker (4, 15, linux.g5.4xlarge.nvidia.gpu)	32m 59s
pytorch_tutorial_build_worker (2, 15, linux.g5.4xlarge.nvidia.gpu)	34m 43s
pytorch_tutorial_build_worker (15, 15, linux.g5.4xlarge.nvidia.gpu)	29m 11s
pytorch_tutorial_build_worker (14, 15, linux.g5.4xlarge.nvidia.gpu)	26m 59s
pytorch_tutorial_build_worker (6, 15, linux.g5.4xlarge.nvidia.gpu)	23m 32s
pytorch_tutorial_build_worker (7, 15, linux.g5.4xlarge.nvidia.gpu)	18m 4s
pytorch_tutorial_build_worker (13, 15, linux.g5.4xlarge.nvidia.gpu)	28m 24s
pytorch_tutorial_build_worker (11, 15, linux.g5.4xlarge.nvidia.gpu)	15m 55s
pytorch_tutorial_build_worker (10, 15, linux.g5.4xlarge.nvidia.gpu)	17m 1s
pytorch_tutorial_build_worker (12, 15, linux.g5.4xlarge.nvidia.gpu)	18m 59s
pytorch_tutorial_build_manager	0s
	5h 38m 5s

Provide feedback