.travis.yml

sudo: false
language: rust
cache: cargo

# run builds if:
#  - the commit is a push to master (maintainers only)
#  - the commit is a PR on master
if: type = push AND branch = master OR type = pull_request AND branch = master

addons:
  apt:
    packages:
      - libssl-dev

rust:
  - stable
  - 1.31.0 # bump as minimum supported Rust version changes
  - beta
  - nightly

before_script:
  - export PATH=$HOME/.cargo/bin:$PATH # for cargo subcommands
  - rustup component add rustfmt-preview

script:
  - cargo fmt -- --check
  - cargo build
  - cargo test
  # - cargo bench
  - cargo doc

before_cache: |
  if [[ "$TRAVIS_RUST_VERSION" == "stable" ]]; then
    rustup toolchain install nightly
    RUSTFLAGS="--cfg procmacro2_semver_exempt" cargo +nightly install cargo-tarpaulin || true
  fi

after_success: |
  if [[ "$TRAVIS_RUST_VERSION" == "stable" ]]; then
    cargo +nightly tarpaulin --ciserver travis-ci --coveralls $TRAVIS_JOB_ID
  fi

matrix:
  allow_failures:
    - rust: nightly
  fast_finish: true