error: variables can be used directly in the `format!` string --> src/pebble.rs:105:21 | 105 | writeln!(self.guard, "{}", pid).unwrap(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = 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 | 105 - writeln!(self.guard, "{}", pid).unwrap(); 105 + writeln!(self.guard, "{pid}").unwrap(); |