warning: the borrowed expression implements the required traits
   --> cli/src/main.rs:999:59
    |
999 |     let file_path = std::path::Path::new(target_dir).join(&req.file_name());
    |                                                           ^^^^^^^^^^^^^^^^ help: change this to: `req.file_name()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args
    = note: `#[warn(clippy::needless_borrows_for_generic_args)]` on by default