Summary:
This should fix the Travis CI builds. It adds rust toolchain support inside docker and sets the required THRIFT env variable.
Pull Request resolved: https://github.com/facebookexperimental/rust-shed/pull/3
Reviewed By: krallin
Differential Revision: D18905608
Pulled By: lukaspiatkowski
fbshipit-source-id: 5db1eff6f215a6617d8acaa0c99a62d45225956b