warning: question mark operator is useless here --> bluez-async/src/serde_path.rs:14:5 | 14 | Ok(Path::new(string).map_err(|e| D::Error::custom(format!("Invalid D-Bus path: {:?}", e)))?) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing question mark and `Ok()`: `Path::new(string).map_err(|e| D::Error::custom(format!("Invalid D-Bus path: {:?}", e)))` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_question_mark = note: `#[warn(clippy::needless_question_mark)]` on by default