language: rust
env:
  - RUSTFLAGS="-D warnings"
before_script:
  rustup component add rustfmt-preview
matrix:
  include:
    - rust: stable
      script:
        - cargo fmt --all -- --check
        - cargo test --all --verbose
    - rust: beta
      script: cargo test --all --verbose
    - rust: nightly 
      script: cargo test --all --verbose --features compiletest_rs
  allow_failures:
    - rust: nightly