name: Cross-platform build verification
on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - "*"

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        toolchain:
          - stable
          - 1.48.0
          - beta
        pinning: [true, false]
        exclude:
          - toolchain: 1.48.0
            pinning: false
    runs-on: ubuntu-latest
    steps:
      - name: Checkout source code
        uses: actions/checkout@v3
      - name: Install Rust ${{ matrix.toolchain }} toolchain
        uses: actions-rs/toolchain@v1
        with:
          toolchain: ${{ matrix.toolchain }}
          override: true
          profile: minimal
      - name: Pin dependencies
        if: ${{ matrix.pinning }}
        run: |
          cargo update -p tokio-postgres --precise "0.7.5" --verbose
          cargo update -p postgres-types --precise "0.2.3" --verbose
          cargo update -p tokio --precise "1.14.1" --verbose
          cargo update -p once_cell --precise "1.14.0" --verbose
      - name: Build on Rust ${{ matrix.toolchain }}
        run: |
          cargo build --verbose --color always