name: Rust

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

env:
  CARGO_TERM_COLOR: always

jobs:
  build:
    strategy:
      matrix:
        rust: [1.40.0, stable, beta, nightly]
    env:
      CARGO_INCREMENTAL: 0 # Incremental compilation is slower and bloats the cache
      RUST_BACKTRACE: 1

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2

    - uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: ${{ matrix.rust }}
        override: true

    - name: Build
      run: cargo build

    - name: Check 1.40
      if: ${{ matrix.rust == '1.40.0' }}
      run: |
        cargo "$@" check
        cargo "$@" check --no-default-features

    - name: Run tests
      if: ${{ matrix.rust != '1.40.0' }}
      run: ./ci.sh

    - name: Check docs
      if: ${{ matrix.rust == 'stable' }}
      run: cargo doc