1 error[E0277]: the trait bound `dyn Foo<(char,), Output = ()>: Eq<dyn Foo<(), Output = ()>>` is not satisfied
2 --> $DIR/unboxed-closure-sugar-equiv.rs:44:11
4 LL | dyn Foo(char) >();
5 | ^^^^^^^^^^^^^ the trait `Eq<dyn Foo<(), Output = ()>>` is not implemented for `dyn Foo<(char,), Output = ()>`
7 note: required by a bound in `eq`
8 --> $DIR/unboxed-closure-sugar-equiv.rs:16:28
10 LL | fn eq<A: ?Sized,B: ?Sized +Eq<A>>() { }
11 | ^^^^^ required by this bound in `eq`
13 error: aborting due to previous error
15 For more information about this error, try `rustc --explain E0277`.