|  | error[E0277]: the `?` operator can only be applied to values that implement `Try` | 
|  | --> $DIR/issue-72766.rs:14:5 | 
|  | | | 
|  | LL |     SadGirl {}.call()?; | 
|  | |     ^^^^^^^^^^^^^^^^^^ the `?` operator cannot be applied to type `impl Future<Output = Result<(), ()>>` | 
|  | | | 
|  | = help: the trait `Try` is not implemented for `impl Future<Output = Result<(), ()>>` | 
|  | help: consider `await`ing on the `Future` | 
|  | | | 
|  | LL |     SadGirl {}.call().await?; | 
|  | |                      ++++++ | 
|  |  | 
|  | error: aborting due to 1 previous error | 
|  |  | 
|  | For more information about this error, try `rustc --explain E0277`. |