ci: Make clippy less strict (#29)

Summary:
The clippy errors with `clippy::all` aren't too helpful. Plus, with building on nightly, new lints often break CI.

Pull Request resolved: #29

Reviewed By: asm89

Differential Revision: D53796464

Pulled By: jasonwhite

fbshipit-source-id: d90323da824a97976c62f46c72aa7c611d31e359

.github/workflows/ci.yml

@@ -66,4 +66,4 @@ jobs:
         with:
             components: clippy
       - name: Run cargo clippy
-        run: cargo clippy --all-features -- -Dclippy::all
+        run: cargo clippy --all-features