combine CI workflows

.github/workflows/rust.yml

@@ -20,3 +20,23 @@ jobs:
       run: cargo build --workspace --verbose
     - name: Run tests
       run: cargo test --workspace --verbose
+  lint:
+    name: rustfmt
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v2
+
+    - name: Install stable toolchain
+      uses: actions-rs/toolchain@v1
+      with:
+        profile: minimal
+        toolchain: stable
+        override: true
+        components: rustfmt
+
+    - name: Run cargo fmt
+      uses: actions-rs/cargo@v1
+      with:
+        command: fmt
+        args: --all -- --check

.github/workflows/rustfmt.yml

@@ -1,25 +0,0 @@
-on: [push, pull_request]
-
-name: rustfmt
-
-jobs:
-  rustfmt:
-    name: rustfmt
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout sources
-        uses: actions/checkout@v2
-
-      - name: Install stable toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-          components: rustfmt
-
-      - name: Run cargo fmt
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --all -- --check