ci: uncomment clippy GH action

.github/workflows/ci.yaml

@@ -93,21 +93,43 @@ jobs:
           command: fmt
           args: --all -- --check
 
-#  clippy:
-#    name: Clippy
-#    runs-on: ubuntu-latest
-#    steps:
-#      - uses: actions/checkout@v3
-#      - uses: actions-rs/toolchain@v1
-#        with:
-#          profile: minimal
-#          toolchain: stable
-#          override: true
-#      - run: rustup component add clippy
-#      - uses: actions-rs/cargo@v1
-#        with:
-#          command: clippy
-#          args: -- -D warnings
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: set up cargo cache
+        uses: actions/cache@v3
+        continue-on-error: false
+        with:
+          path: |
+            .cache/cargo/registry/index/
+            .cache/cargo/registry/cache/
+            .cache/cargo/git/db/
+          key: ${{ runner.os }}-cargo
+          restore-keys: ${{ runner.os }}-cargo
+      - name: set up nginx source binary cache
+        uses: actions/cache@v3
+        continue-on-error: false
+        with:
+          path: |
+            .cache/.gnupg
+            .cache/*.tar.gz
+            .cache/*.tar.asc
+            .cache/*.tar.sig
+          key: nginx-${{ hashFiles('**/nginx-sys/build.rs') }}
+          restore-keys: nginx-
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - run: rustup component add clippy
+      - uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: -- -D warnings
 
 #  docs:
 #    name: Docs