ci: automate MSRV test

.github/workflows/build.yml

@@ -57,11 +57,25 @@ jobs:
  strategy:
  fail-fast: false
  matrix:
- toolchain: [ nightly, beta, stable, 1.75.0 ]
+ toolchain: [ nightly, beta, stable ]
  steps:
  - uses: actions/checkout@v4
  - uses: dtolnay/rust-toolchain@master
  with:
  toolchain: ${{matrix.toolchain}}
  - name: Toolchain ${{matrix.toolchain}}
  run: cargo +${{matrix.toolchain}} check --workspace --all-targets --all-features
+ msrv:
+ runs-on: ubuntu-latest
+ steps:
+ - uses: SebRollen/[email protected]
+ id: msrv
+ with:
+ file: 'Cargo.toml'
+ field: 'workspace.rust-version'
+ - uses: actions/checkout@v4
+ - uses: dtolnay/rust-toolchain@master
+ with:
+ toolchain: ${{steps.msrv.outputs.value}}
+ - name: Toolchain ${{msrv}}
+ run: cargo +${{steps.msrv.outputs.value}} check --workspace --all-targets --all-features