parallelize CI, check on MSRV and test on stable

.github/workflows/rust.yml

@@ -9,39 +9,67 @@ on:
       - master
 
 jobs:
-  test:
+  check:
+    name: Check
     runs-on: ubuntu-latest
     timeout-minutes: 5
     strategy:
       fail-fast: true
       matrix:
-        rustup:
-          - toolchain: stable
-            components: "clippy, rustfmt"
-          - toolchain: nightly
-            components: ""
-          - toolchain: 1.40.0
-            components: ""
+        rustc: [1.40.0, stable] # MSVR and current stable rustc
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rustc }}
+          override: true
+      - uses: actions-rs/cargo@v1
+        with:
+          command: check
+
+  test:
+    name: Test Suite
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1
-        name: Install Rust
         with:
-          toolchain: ${{ matrix.rustup.toolchain }}
           profile: minimal
-          components: ${{ matrix.rustup.components }}
-          default: true
-      - name: Clippy
-        run: cargo clippy
-        if: contains(matrix.rustup.components, 'clippy')
-      - name: Format
-        run: cargo fmt -- --check
-        if: contains(matrix.rustup.components, 'rustfmt')
-      - name: Test
-        run: cargo test
-      - name: Test (No features)
-        run: cargo test --no-default-features
-        if: matrix.rustup.toolchain == 'nightly'
-      - name: Benchmark
-        run: cargo bench
-        if: matrix.rustup.toolchain == 'nightly'
+          toolchain: stable
+          override: true
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+
+  fmt:
+    name: Rustfmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          components: rustfmt
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          components: clippy
+      - name: Run cargo clippy
+        uses: actions-rs/clippy-check@v1
+        with:
+          args: --all-features