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warning: opaque type `impl Trait<Assoc = impl Send>` does not satisfy its associated type bounds
--> $DIR/nested-return-type2.rs:28:24
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LL | type Assoc: Duh;
| --- this associated type bound is unsatisfied for `impl Send`
...
LL | fn foo() -> impl Trait<Assoc = impl Send> {
| ^^^^^^^^^^^^^^^^^
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= note: `#[warn(opaque_hidden_inferred_bound)]` on by default
help: add this bound
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LL | fn foo() -> impl Trait<Assoc = impl Send + Duh> {
| +++++
warning: 1 warning emitted
|
