1 error[E0277]: the size for values of type `Self` cannot be known at compilation time
2 --> $DIR/issue-63593.rs:9:5
5 | ------------- required by `MyTrait`
7 | ^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
9 = help: the trait `std::marker::Sized` is not implemented for `Self`
10 = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
11 = help: consider adding a `where Self: std::marker::Sized` bound
13 error: aborting due to previous error
15 For more information about this error, try `rustc --explain E0277`.