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+error[E0038]: the trait `Bar` cannot be made into an object
+ --> $DIR/issue-28576.rs:7:12
+ |
+LL | / dyn Bar
+LL | | <Assoc=()>
+ | |________________________^ `Bar` cannot be made into an object
+ |
+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/issue-28576.rs:5:16
+ |
+LL | pub trait Bar: Foo<Assoc=()> {
+ | --- ^^^^^^^^^^^^^
+ | | | |
+ | | | ...because it uses `Self` as a type parameter
+ | | ...because it uses `Self` as a type parameter
+ | this trait cannot be made into an object...
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0038`.