1 warning: opaque type `impl Trait<Assoc = impl Send>` does not satisfy its associated type bounds
2 --> $DIR/nested-return-type2.rs:25:24
5 | --- this associated type bound is unsatisfied for `impl Send`
7 LL | fn foo() -> impl Trait<Assoc = impl Send> {
10 = note: `#[warn(opaque_hidden_inferred_bound)]` on by default
13 LL | fn foo() -> impl Trait<Assoc = impl Send + Duh> {
16 warning: 1 warning emitted