warning: variables can be used directly in the `format!` string --> src/builder.rs:150:38 | 150 | Proof(e) => f.write_str(&format!("Could not create proof: {}", e)), | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args = note: `#[warn(clippy::uninlined_format_args)]` on by default help: change this to | 150 - Proof(e) => f.write_str(&format!("Could not create proof: {}", e)), 150 + Proof(e) => f.write_str(&format!("Could not create proof: {e}")), |