chore Cargo - Set rust-version & add matrix for building and testing …

…in MSRV

Signed-off-by: Lachezar Lechev <[email protected]>

.github/workflows/rust.yml

@@ -6,17 +6,25 @@ jobs:
   formatting:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v4
+    - uses: dtolnay/rust-toolchain@stable
+      with:
+        components: rustfmt
     - name: Check formatting
       run: cargo fmt -- --check
 
   build-test:
     runs-on: ubuntu-latest
     strategy:
       matrix:
+        # Always run MSRV too!
+        rust: ["stable", "1.76"]
         features: ['log', 'defmt-log', '""']
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v4
+    - uses: dtolnay/rust-toolchain@master
+      with:
+        toolchain: ${{ matrix.rust }}
     - name: Build
       run: cargo build --no-default-features --features ${{matrix.features}} --verbose
     - name: Run Tests

Cargo.toml

@@ -10,6 +10,9 @@ readme = "README.md"
 repository = "https://github.com/rust-embedded-community/embedded-sdmmc-rs"
 version = "0.8.0"
 
+# Make sure to update the CI too!
+rust-version = "1.76"
+
 [dependencies]
 byteorder = {version = "1", default-features = false}
 defmt = {version = "0.3", optional = true}