Update ci.yml

.github/workflows/ci.yml

@@ -31,6 +31,8 @@ jobs:
         run: cargo build --all --verbose
       - name: Run tests
         run: cargo test --all --all-features
+      - name: Clean
+        run: cargo clean
 
       # examples
       - name: Check examples format
@@ -42,6 +44,9 @@ jobs:
       - name: Build examples
         run: cargo build --all --verbose
         working-directory: ./examples
+      - name: Clean examples
+        run: cargo clean
+        working-directory: ./examples
 
       # build on nightly
       - uses: actions-rs/toolchain@v1