1 error[E0277]: the trait bound `dyn Foo: CastTo<[i32]>` is not satisfied
2 --> $DIR/issue-71659.rs:30:13
4 LL | let x = x.cast::<[i32]>();
5 | ^ ---- required by a bound introduced by this call
7 | the trait `CastTo<[i32]>` is not implemented for `dyn Foo`
9 note: required by a bound in `Cast::cast`
10 --> $DIR/issue-71659.rs:19:15
12 LL | fn cast<T: ?Sized>(&self) -> &T
13 | ---- required by a bound in this
16 | ^^^^^^^^^ required by this bound in `Cast::cast`
18 error: aborting due to previous error
20 For more information about this error, try `rustc --explain E0277`.