| error[E0376]: the trait `CoerceUnsized` may only be implemented for a coercion between structures | |
| --> $DIR/E0376.rs:8:1 | |
| | | |
| LL | impl<T, U> CoerceUnsized<U> for Foo<T> {} | |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0376`. |