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error[E0038]: the trait `Foo` cannot be made into an object
--> $DIR/gat-in-trait-path.rs:26:17
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LL | fn f(_arg : Box<dyn for<'a> Foo<A<'a> = &'a ()>>) {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `Foo` cannot be made into an object
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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>
--> $DIR/gat-in-trait-path.rs:10:10
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LL | trait Foo {
| --- this trait cannot be made into an object...
LL | type A<'a> where Self: 'a;
| ^ ...because it contains the generic associated type `A`
= help: consider moving `A` to another trait
error: aborting due to previous error
For more information about this error, try `rustc --explain E0038`.
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