language: rust
rust:
    - stable
cache:
  cargo: true
  timeout: 1200
addons:
  apt:
    packages:
      - unzip
before_install:
  # The Rust stable toolchain is already installed, ${RUST_NEXT} is added to
  # provide `cargo clippy` and `cargo fmt`.
  - rustup toolchain install ${RUST_NEXT}
  - rustup component add --toolchain=${RUST_NEXT} rustfmt-preview clippy-preview
  # Some symlinking is still necessary for clippy to function properly.
  - ln -sf ${HOME}/.rustup/toolchains/${RUST_NEXT}-x86_64-unknown-linux-gnu/bin/clippy-driver ${HOME}/.rustup/toolchains/${RUST_NEXT}-x86_64-unknown-linux-gnu/bin/cargo-clippy $HOME/.cargo/bin/
env:
  global:
    - RUST_BACKTRACE=1
    - RUSTFLAGS="-D warnings"
    # Note: Currently (as of 2018-07-13), `clippy-preview` is only in the nightly
    #       release. A version of `rustfmt` that supports the `--check` option
    #       is also not in stable yet.
    #
    #       A Clear migration path is swapping out `nightly-2018-07-13` with
    #       `beta` after the stable release of Rust 1.28; and finally migrating
    #       everything to `stable` at Rust 1.29.
    - RUST_NEXT=nightly-2018-07-13
script:
  - cargo +${RUST_NEXT} clippy -- --deny clippy
  - cargo +${RUST_NEXT} clippy --tests --examples -- --deny clippy
  - cargo +${RUST_NEXT} clippy --all-features -- --deny clippy
  - cargo +${RUST_NEXT} clippy --all-features --tests -- --deny clippy
  - cargo +${RUST_NEXT} fmt -- --check
  - cargo test --all-features --release