Merge pull request #151 from arkedge/check-rust-with-locked

[CI] cargo clippy & test with --locked

.github/workflows/rust.yml

@@ -57,11 +57,12 @@ jobs:
         uses: sksat/action-clippy@v0.7.1
         with:
           reporter: github-pr-review
+          clippy_flags: --locked
 
       - name: format
         run: |
           cargo fmt --all -- --check
 
       - name: unit test
         run: |
-          cargo test
+          cargo test --locked