ci: fix broken linter (#109)

Author: sheepduke

.github/workflows/rust.yml

@@ -45,6 +45,7 @@ jobs:
       - uses: actions-rust-lang/setup-rust-toolchain@v1
         with:
           toolchain: stable
+          components: rustfmt, clippy
 
       - name: Check formats
         run: cargo fmt --check --all