1 error[E0393]: the type parameter `RHS` must be explicitly specified
2 --> $DIR/issue-21950.rs:17:14
5 | ^^^ missing reference to `RHS`
7 = note: because of the default `Self` reference, type parameters must be specified on object types
9 error[E0191]: the value of the associated type `Output` (from the trait `std::ops::Add`) must be specified
10 --> $DIR/issue-21950.rs:17:14
13 | ^^^ missing associated type `Output` value
15 error: aborting due to 2 previous errors
17 Some errors occurred: E0191, E0393.
18 For more information about an error, try `rustc --explain E0191`.