Move prototype to unstable #4988

Job	Run time
pytorch_tutorial_build_worker (1, 15, linux.g5.12xlarge.nvidia.gpu)	14m 24s
pytorch_tutorial_build_worker (3, 15, linux.g5.4xlarge.nvidia.gpu)	24m 30s
pytorch_tutorial_build_worker (5, 15, linux.g5.4xlarge.nvidia.gpu)	22m 23s
pytorch_tutorial_build_worker (4, 15, linux.g5.4xlarge.nvidia.gpu)	34m 34s
pytorch_tutorial_build_worker (7, 15, linux.g5.4xlarge.nvidia.gpu)	32m 41s
pytorch_tutorial_build_worker (6, 15, linux.g5.4xlarge.nvidia.gpu)	24m 22s
pytorch_tutorial_build_worker (9, 15, linux.g5.4xlarge.nvidia.gpu)	18m 9s
pytorch_tutorial_build_worker (10, 15, linux.g5.4xlarge.nvidia.gpu)	30m 10s
pytorch_tutorial_build_worker (12, 15, linux.g5.4xlarge.nvidia.gpu)	15m 42s
pytorch_tutorial_build_worker (8, 15, linux.g5.4xlarge.nvidia.gpu)	24m 14s
pytorch_tutorial_build_worker (11, 15, linux.g5.4xlarge.nvidia.gpu)	14m 25s
pytorch_tutorial_build_worker (15, 15, linux.g5.4xlarge.nvidia.gpu)	19m 15s
pytorch_tutorial_build_worker (14, 15, linux.g5.4xlarge.nvidia.gpu)	27m 6s
pytorch_tutorial_build_worker (13, 15, linux.g5.4xlarge.nvidia.gpu)	15m 0s
pytorch_tutorial_build_worker (2, 15, linux.g5.4xlarge.nvidia.gpu)	23m 57s
pytorch_tutorial_build_manager	-1s
	5h 40m 51s

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