1 error[E0393]: the type parameter `T` must be explicitly specified
2 --> $DIR/issue-22370.rs:15:10
5 | ^ missing reference to `T`
7 = note: because of the default `Self` reference, type parameters must be specified on object types
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0393`.