fix(ci): fix benchmarks in ci

.github/workflows/bench.yml

@@ -14,16 +14,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - run: rustup toolchain update nightly && rustup default nightly
+      - uses: dtolnay/rust-toolchain@stable
       - name: Run benchmark
-        run: cd examples/rust && cargo +nightly bench | tee output.txt
+        run: cargo bench | tee output.txt
 
       - name: Store benchmark result
         uses: benchmark-action/github-action-benchmark@v1
         with:
           name: Rust Benchmark
           tool: "cargo"
-          output-file-path: examples/rust/output.txt
+          output-file-path: output.txt
           github-token: ${{ secrets.GITHUB_TOKEN }}
           auto-push: true
           # Show alert with commit comment on detecting possible performance regression