Fix CI running wrong cargo version (#333)

.github/workflows/ci.yaml

@@ -47,32 +47,24 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y libprotobuf-dev libprotobuf-c-dev protobuf-compiler protobuf-c-compiler
 
-      - uses: dtolnay/rust-toolchain@stable
+      - id: rustc
+        uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.toolchain }}
 
       - name: Configure CI cache
         uses: Swatinem/rust-cache@v2
 
+      - name: Build
+        run: cargo +${{ steps.rustc.outputs.name }} build --all-targets
+
       - name: Run tests
-        uses: actions-rs/cargo@v1
         if: matrix.toolchain != 'nightly'
-        with:
-          command: test
-          args: --all-targets --no-fail-fast 
-
-      - name: Build
-        uses: actions-rs/cargo@v1
-        with:
-          command: build
-          args: --all-targets
+        run: cargo +${{ steps.rustc.outputs.name }} test --all-targets --no-fail-fast
 
       - name: Run tests with code coverage
-        uses: actions-rs/cargo@v1
         if: matrix.toolchain == 'nightly'
-        with:
-          command: test
-          args: --all-targets --no-fail-fast 
+        run: cargo +${{ steps.rustc.outputs.name }} test --all-targets --no-fail-fast
         env:
           CARGO_INCREMENTAL: '0'
           RUSTFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests'