chore: add msrv

.github/workflows/ci.yml

@@ -12,24 +12,33 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
-
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
 
-      - name: Generate cargo lockfile
-        run: cargo generate-lockfile
-
-      - name: Cargo cache
-        uses: actions/cache@v3
+      - name: Setup Rust
+        uses: dtolnay/rust-toolchain@stable
         with:
-          path: |
-            ~/.cargo/bin/
-            ~/.cargo/registry/index/
-            ~/.cargo/registry/cache/
-            ~/.cargo/git/db/
-            target/
-          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          toolchain: stable
 
       - name: Test
         run: cargo test
+
+  verify-msrv:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Setup Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+
+      - name: Install cargo-msrv
+        uses: taiki-e/install-action@v2
+        with:
+          tool: cargo-msrv
+
+      - name: Verify msrv
+        run: cargo msrv verify --all-features