warning: returning the result of a `let` binding from a block
   --> src/proxy.rs:693:5
    |
683 |     let proxies = get_from_environment();
    |     ------------------------------------- unnecessary `let` binding
...
693 |     proxies
    |     ^^^^^^^
    |
    = note: `#[warn(clippy::let_and_return)]` on by default
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
help: return the expression directly
    |
683 |     
684 | 
685 |     // TODO: move the following #[cfg] to `if expression` when attributes on `if` expressions allowed
686 |     #[cfg(target_os = "windows")]
687 |     {
688 |         if proxies.is_empty() {
  ...

warning: 1 warning emitted