Use nightly for clippy and remove conflict mistake

.github/workflows/rust.yml

@@ -56,25 +56,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
-          override: true
-          components: clippy
-      - name: Cache dependencies
-        uses: Swatinem/rust-cache@v2.0.0
-      - name: Run cargo clippy
-        uses: actions-rs/cargo@v1
-        with:
-          command: clippy
-
-  clippy:
-    name: Run Clippy
-    runs-on: ubuntu-20.04
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
+          toolchain: nightly
           override: true
           components: clippy
       - name: Cache dependencies