language: rust

# Need to cache the whole `.cargo` directory to keep .crates.toml for
# cargo-update to work
cache:
  directories:
    - $HOME/protobuf
    - $HOME/.cargo

# But don't cache the cargo registry
before_cache:
  - rm -rf $HOME/.cargo/registry

rust:
  - stable
  - beta

matrix:
  # Since this item is allowed to fail, don't wait for it's result to mark the
  # build complete.
  fast_finish: true
  allow_failures:
    - env: NAME='nightly'
    - env: NAME='kcov'

  include:
    - env: NAME='nightly'
      rust: nightly

    - env: NAME='clippy'
      rust: stable
      before_script:
        - rustup component add clippy
      script:
        - cargo clippy --all-targets --all-features -- -D warnings

    - env: NAME='kcov'
      sudo: required # travis-ci/travis-ci#9061
      before_script:
        - cargo install cargo-update || echo "cargo-update already installed"
        - cargo install cargo-kcov || echo "cargo-kcov already installed"
        - cargo install-update -a
      script:
        - cargo kcov --print-install-kcov-sh | sh
        - cargo update # Creates `Cargo.lock` needed by next command
        - cargo kcov --verbose --coveralls -- --verify --exclude-pattern=/.cargo,/usr/lib,src/proto
      addons:
        apt:
          packages:
            - libcurl4-openssl-dev
            - libdw-dev
            - binutils-dev
            - libiberty-dev
            - zlib1g-dev

env:
  global:
  - RUSTFLAGS="-C link-dead-code"

script:
  - cargo update
  - cargo build --verbose --all-features
  - cargo test --verbose --all-features
  - cargo doc --verbose --all-features --no-deps

before_install:
  - export PATH=$PATH:$HOME/protobuf/bin
  - export PROTOC_VERSION=$(cat PROTOC_VERSION)
  - bash ci/install_protobuf.sh