error[E0277]: the trait bound `dyn Send: Trait` is not satisfied
  --> $DIR/unsized_coercion3.rs:14:17
   |
LL |         let x = hello();
   |                 ^^^^^^^ the trait `Trait` is not implemented for `dyn Send`
   |
   = help: the trait `Trait` is implemented for `u32`

error[E0308]: mismatched types
  --> $DIR/unsized_coercion3.rs:19:5
   |
LL | fn hello() -> Box<impl Trait + ?Sized> {
   |               ------------------------
   |               |   |
   |               |   the expected opaque type
   |               expected `Box<impl Trait + ?Sized>` because of return type
...
LL |     Box::new(1u32)
   |     ^^^^^^^^^^^^^^ types differ
   |
   = note: expected struct `Box<impl Trait + ?Sized>`
              found struct `Box<u32>`

error[E0277]: the trait bound `dyn Send: Trait` is not satisfied
  --> $DIR/unsized_coercion3.rs:11:1
   |
LL | fn hello() -> Box<impl Trait + ?Sized> {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Trait` is not implemented for `dyn Send`
   |
   = help: the trait `Trait` is implemented for `u32`

error: aborting due to 3 previous errors

Some errors have detailed explanations: E0277, E0308.
For more information about an error, try `rustc --explain E0277`.