fairseq requires PyTorch >= 1.4 (#1844)
fairseq requires PyTorch >= 1.4 (#1844)

Summary:
Fixes https://github.com/pytorch/fairseq/issues/1843
Pull Request resolved: https://github.com/pytorch/fairseq/pull/1844

Differential Revision: D20468391

Pulled By: myleott

fbshipit-source-id: 0b2e2ba35c94eeb49d0e6bb05a8fefa4b847f46d

pytorch/fairseq,pytorch/fairseq,pytorch/fairseq