| error[E0277]: the size for values of type `impl ?Sized` cannot be known at compilation time | |
| --> $DIR/rpit-not-sized.rs:1:13 | |
| | | |
| LL | fn foo() -> impl ?Sized { | |
| | ^^^^^^^^^^^ doesn't have a size known at compile-time | |
| | | |
| = help: the trait `Sized` is not implemented for `impl ?Sized` | |
| = note: the return type of a function must have a statically known size | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0277`. |