Fix oom in CircleCI
Fix oom in CircleCI

Summary: CircleCI build fails with OOM, hoping this will fix it

Reviewed By: passy

Differential Revision: D6772978

fbshipit-source-id: a1ce5ccddd507a2ec92233653c70927a06eb6fa8

facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho