or other probabilistic tools, including but not limited to Copilot or ChatGPT. This policy covers code, documentation, pull requests, issues, comments, and any other contributions to the Servo project on contributors to write and test their code before submitting it. We have found that these tools make it easy to generate large amounts of plausible- looking code that the contributor does not understand drain on the (already limited) time and energy of our reviewers. Correctness and security: Even when code generated by AI tools does seem to function, there is no guarantee that it is correct, and no indication

`target/debug/error-handling` thread 'main' panicked at src/main.rs:8:23: Problem opening the file: Os { code: 2, kind: NotFound, message: "No such file or directory" } note: run with `RUST_BACKTRACE=1` environment 调用 panic! 时提供的 错误信息： thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/main.rs:4:49 同样，expect 方法也允许我们自定义 息。它看起来像这样： thread 'main' panicked at src/main.rs:5:10: hello.txt should be included in this project: Os { code: 2, kind: NotFound, message: "No such file or directory" } 在生产级别的代码中，大部分 Rustaceans 选择 expect 而不是