Re-add used-but-removed futures dep, which (due to a PR race) had a new usage added in 01c807ef, but its declaration removed in faeaf078. (#6680)
Re-add used-but-removed futures dep, which (due to a PR race) had a new usage added in 01c807ef, but its declaration removed in faeaf078. (#6680)

Re-add used-but-removed futures dep, which (due to a PR race) had a new usage added in 01c807ef, but its declaration removed in faeaf078.
tdyas/pants,pantsbuild/pants,wisechengyi/pants,tdyas/pants,jsirois/pants,wisechengyi/pants,wisechengyi/pants,pantsbuild/pants,twitter/pants,pantsbuild/pants,wisechengyi/pants,wisechengyi/pants,benjyw/pants,benjyw/pants,benjyw/pants,wisechengyi/pants,twitter/pants,wisechengyi/pants,benjyw/pants,pantsbuild/pants,benjyw/pants,tdyas/pants,wisechengyi/pants,benjyw/pants,jsirois/pants,tdyas/pants,jsirois/pants,tdyas/pants,tdyas/pants,twitter/pants,pantsbuild/pants,twitter/pants,tdyas/pants,benjyw/pants,tdyas/pants,pantsbuild/pants,twitter/pants,twitter/pants,twitter/pants,pantsbuild/pants,twitter/pants,wisechengyi/pants,tdyas/pants,twitter/pants