error: useless conversion to the same type: `u32` --> src/data.rs:117:24 | 117 | birthday: Some(u32::from(birthday)), | ^^^^^^^^^^^^^^^^^^^ help: consider removing `u32::from()`: `birthday` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion = note: `-D clippy::useless-conversion` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::useless_conversion)]`