| error[E0277]: the trait bound `T: Unsize<U>` is not satisfied |
| --> $DIR/validate-unsize-cast.rs:10:42 |
| | |
| LL | impl<T: ?Sized, U: ?Sized> CastTo<U> for T {} |
| | ^ the trait `Unsize<U>` is not implemented for `T` |
| | |
| = note: all implementations of `Unsize` are provided automatically by the compiler, see <https://doc.rust-lang.org/stable/std/marker/trait.Unsize.html> for more information |
| note: required by a bound in `CastTo` |
| --> $DIR/validate-unsize-cast.rs:7:30 |
| | |
| LL | pub trait CastTo<U: ?Sized>: Unsize<U> {} |
| | ^^^^^^^^^ required by this bound in `CastTo` |
| help: consider further restricting type parameter `T` with unstable trait `Unsize` |
| | |
| LL | impl<T: ?Sized + std::marker::Unsize<U>, U: ?Sized> CastTo<U> for T {} |
| | ++++++++++++++++++++++++ |
| |
| error: aborting due to 1 previous error |
| |
| For more information about this error, try `rustc --explain E0277`. |
