Separate msrv job

Author: udoprog

.github/workflows/ci.yml

@@ -13,23 +13,21 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  msrv:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: dtolnay/rust-toolchain@1.72
+    - run: cargo build --workspace --lib
+    - run: cargo build --workspace --no-default-features --lib
+
   test:
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        rust: ["1.72", stable]
     steps:
     - uses: actions/checkout@v4
-    - uses: dtolnay/rust-toolchain@master
-      with:
-        toolchain: ${{matrix.rust}}
-    - run: cargo build --workspace
-    - run: cargo build --workspace --no-default-features
+    - uses: dtolnay/rust-toolchain@stable
     - run: cargo test --workspace --all-targets --all-features
-      if: matrix.rust == 'stable'
     - run: cargo test --workspace --doc --all-features
-      if: matrix.rust == 'stable'
 
   clippy:
     runs-on: ubuntu-latest