| error[E0277]: the size for values of type `impl Trait + ?Sized` cannot be known at compilation time |
| --> $DIR/unsized_coercion5.rs:15:32 |
| | |
| LL | let y: Box<dyn Send> = x as Box<dyn Trait + Send>; |
| | ^ doesn't have a size known at compile-time |
| | |
| = help: the trait `Sized` is not implemented for `impl Trait + ?Sized` |
| = note: required for the cast from `Box<impl Trait + ?Sized>` to `Box<dyn Trait + Send>` |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0277`. |
