Split linting and formatting jobs

.github/workflows/formatting.yml

@@ -0,0 +1,24 @@
+---
+name: Rust formatting
+on:
+  pull_request:
+    paths:
+      - .github/workflows/*.yml
+      - '**/*.rs'
+  workflow_dispatch:
+jobs:
+  check-formatting:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions-rs/toolchain@v1.0.6
+        with:
+          toolchain: stable
+          components: rustfmt
+          override: true
+
+      - name: Check formatting
+        run: |
+          rustfmt --version
+          cargo fmt -- --check

.github/workflows/style-sanity.yml → .github/workflows/linting.yml

@@ -1,4 +1,5 @@
-name: Rust linting and formatting
+---
+name: Rust linting
 on:
   pull_request:
     paths:
@@ -24,19 +25,3 @@ jobs:
         run: |
           time cargo clippy --locked --all-targets --no-default-features
           time cargo clippy --locked --all-targets --all-features
-
-  check-formatting:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: actions-rs/toolchain@v1.0.6
-        with:
-          toolchain: stable
-          components: rustfmt
-          override: true
-
-      - name: Check formatting
-        run: |
-          rustfmt --version
-          cargo fmt -- --check