1 error[E0277]: the trait bound `impl Send: Duh` is not satisfied
2 --> $DIR/nested-return-type2-tait3.rs:25:13
4 LL | fn foo() -> Traitable {
5 | ^^^^^^^^^ the trait `Duh` is not implemented for `impl Send`
7 = help: the trait `Duh` is implemented for `i32`
8 note: required because of the requirements on the impl of `Trait` for `[closure@$DIR/nested-return-type2-tait3.rs:27:5: 27:10]`
9 --> $DIR/nested-return-type2-tait3.rs:14:31
11 LL | impl<R: Duh, F: FnMut() -> R> Trait for F {
14 error: aborting due to previous error
16 For more information about this error, try `rustc --explain E0277`.