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error[E0277]: the trait bound `B: Bar` is not satisfied
--> $DIR/issue-90400-1.rs:22:9
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LL | move || bar.bar()
| ^^^^^^^^^^^^^^^^^ the trait `Bar` is not implemented for `B`
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note: required by a bound in `<MyFoo as Foo>::foo`
--> $DIR/issue-90400-1.rs:21:15
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LL | fn foo<B: Bar>(&self, bar: B) -> Self::FooFn<B> {
| ^^^ required by this bound in `<MyFoo as Foo>::foo`
help: consider restricting type parameter `B`
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LL | type FooFn<B: Bar> = impl FnOnce();
| +++++
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0277`.
|