fixed: added uses command

.github/workflows/ci.yml

@@ -7,6 +7,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: nightly
+          override: true
+          components: rustfmt, clippy
       - name: Cargo fmt
         run: cargo +nightly fmt --all -- --check
       - name: Cargo clippy