run tests on MSRV, for all macOS versions

Author: micolous

.github/workflows/rust.yml

@@ -27,24 +27,19 @@ jobs:
     - uses: actions/checkout@v2
     - name: Check semver
       uses: obi1kenobi/cargo-semver-checks-action@v2
-  msrv:
-    runs-on: macos-11.0
-    steps:
-    - uses: actions/checkout@v2
-    - name: Install toolchain
-      uses: actions-rs/toolchain@v1
-      with:
-        toolchain: 1.56.1
-        override: true
-    - name: Build
-      run: cargo build --verbose
   build:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         os: [macos-11.0, macos-12, macos-13]
+        toolchain: [stable, 1.56.1]
     steps:
     - uses: actions/checkout@v2
+    - name: Install toolchain
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: ${{ matrix.toolchain }}
+        override: true
     - name: Build
       run: cargo build --verbose
     - name: Run tests