1 error[E0038]: the trait `X` cannot be made into an object
2 --> $DIR/object-safety-bounds.rs:7:11
4 LL | fn f() -> Box<dyn X<U = u32>> {
5 | ^^^^^^^^^^^^^^^^^^^ `X` cannot be made into an object
7 note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
8 --> $DIR/object-safety-bounds.rs:4:13
11 | - this trait cannot be made into an object...
12 LL | type U: PartialEq<Self>;
13 | ^^^^^^^^^^^^^^^ ...because it uses `Self` as a type parameter
15 error: aborting due to previous error
17 For more information about this error, try `rustc --explain E0038`.