error: useless use of `format!` --> src/clients/beacon/types.rs:115:31 | 115 | Err(_) => Err(format!( | _______________________________^ 116 | | "Invalid block ID. Expected 'head', 'finalized' or a number." 117 | | )), | |_________________^ help: consider using `.to_string()`: `"Invalid block ID. Expected 'head', 'finalized' or a number.".to_string()` | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format = note: `-D clippy::useless-format` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::useless_format)]`