1error[E0038]: the trait `X` cannot be made into an object 2 --> $DIR/issue-67510-pass.rs:7:23 3 | 4LL | fn _func1<'a>(_x: Box<dyn X<Y<'a>=&'a ()>>) {} 5 | ^^^^^^^^^^^^^^^^^^^ `X` cannot be made into an object 6 | 7note: 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/issue-67510-pass.rs:4:10 9 | 10LL | trait X { 11 | - this trait cannot be made into an object... 12LL | type Y<'a>; 13 | ^ ...because it contains the generic associated type `Y` 14 = help: consider moving `Y` to another trait 15 16error: aborting due to previous error 17 18For more information about this error, try `rustc --explain E0038`. 19