Update ci.yaml

Author: jonasbb

.github/workflows/ci.yaml

@@ -13,10 +13,9 @@ jobs:
         with:
           toolchain: nightly
           components: rustfmt
-      - run: cargo +nightly fmt --all -- --check
+      - run: cargo +nightly --version
       - uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
           toolchain: stable
           components: clippy
-      - uses: Swatinem/rust-cache@v2
-      - run: cargo clippy --all-targets --all-features --locked -- -D
+      - run: cargo +stable --version