message: Check formatting in CI
diff: language: rust
  +sudo: false
  rust:
  - 1.15.0
  - - 1.22.0
  - - 1.26.0
  + - 1.22.0 # rand
  + - 1.26.0 # has_i128
  + - 1.31.0 # 2018!
  - stable
  - beta
  - nightly
  -sudo: false
  script:
  - cargo build --verbose
  - ./ci/test_full.sh
  +matrix:
  + include:
  + - name: "rustfmt"
  + rust: 1.31.0
  + before_script:
  + - rustup component add rustfmt
  + script:
  + - cargo fmt --all -- --check
  notifications:
  email:
  on_success: never
  