error: redundant reference in `format!` argument --> src/build_targets.rs:70:50 | 70 | let pc = targetdir.join(format!("{}.pc", &capi_config.pkg_config.filename)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the redundant `&`: `capi_config.pkg_config.filename` | = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.97.0/index.html#useless_borrows_in_formatting = note: `-D clippy::useless-borrows-in-formatting` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(clippy::useless_borrows_in_formatting)]`