error[E0282]: type annotations needed
  --> $DIR/expr-struct-type-relative-gat.rs:17:9
   |
LL |         Self::Output::Simple {};
   |         ^^^^^^^^^^^^ cannot infer type for type parameter `T` declared on the associated type `Output`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0282`.