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error[E0277]: the trait bound `dyn Foo<(isize,), isize, Output = ()>: Eq<dyn Foo<(isize,), Output = ()>>` is not satisfied
--> $DIR/unboxed-closure-sugar-default.rs:21:10
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LL | eq::<dyn Foo<(isize,), isize, Output=()>, dyn Foo(isize)>();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Eq<dyn Foo<(isize,), Output = ()>>` is not implemented for `dyn Foo<(isize,), isize, Output = ()>`
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note: required by a bound in `eq`
--> $DIR/unboxed-closure-sugar-default.rs:14:40
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LL | fn eq<A: ?Sized,B: ?Sized>() where A : Eq<B> { }
| ^^^^^ required by this bound in `eq`
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.
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