error: variables can be used directly in the `format!` string --> src/errors.rs:41:17 | 41 | write!(f, "{} must be {} bytes in length", n, l) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#uninlined_format_args = note: `-D clippy::uninlined-format-args` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::uninlined_format_args)]` help: change this to | 41 - write!(f, "{} must be {} bytes in length", n, l) 41 + write!(f, "{n} must be {l} bytes in length") |