error: boxed return of the sized type `usize`
  --> $DIR/unnecessary_box_returns.rs:5:22
   |
LL |     fn baz(&self) -> Box<usize>;
   |                      ^^^^^^^^^^ help: try: `usize`
   |
   = help: changing this also requires a change to the return expressions in this function
   = note: `-D clippy::unnecessary-box-returns` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::unnecessary_box_returns)]`

error: boxed return of the sized type `usize`
  --> $DIR/unnecessary_box_returns.rs:19:22
   |
LL |     fn baz(&self) -> Box<usize> {
   |                      ^^^^^^^^^^ help: try: `usize`
   |
   = help: changing this also requires a change to the return expressions in this function

error: boxed return of the sized type `usize`
  --> $DIR/unnecessary_box_returns.rs:27:20
   |
LL | fn bxed_usize() -> Box<usize> {
   |                    ^^^^^^^^^^ help: try: `usize`
   |
   = help: changing this also requires a change to the return expressions in this function

error: boxed return of the sized type `Foo`
  --> $DIR/unnecessary_box_returns.rs:33:19
   |
LL | fn _bxed_foo() -> Box<Foo> {
   |                   ^^^^^^^^ help: try: `Foo`
   |
   = help: changing this also requires a change to the return expressions in this function

error: aborting due to 4 previous errors