| error[E0412]: cannot find type `T` in this scope | 
 |   --> $DIR/transmute-to-tail-with-err.rs:3:26 | 
 |    | | 
 | LL | struct Bar(Box<dyn Trait<T>>); | 
 |    |                          ^ not found in this scope | 
 |    | | 
 | help: you might be missing a type parameter | 
 |    | | 
 | LL | struct Bar<T>(Box<dyn Trait<T>>); | 
 |    |           +++ | 
 |  | 
 | error[E0512]: cannot transmute between types of different sizes, or dependently-sized types | 
 |   --> $DIR/transmute-to-tail-with-err.rs:7:27 | 
 |    | | 
 | LL |     let x: Bar = unsafe { std::mem::transmute(()) }; | 
 |    |                           ^^^^^^^^^^^^^^^^^^^ | 
 |    | | 
 |    = note: source type: `()` (0 bits) | 
 |    = note: target type: `Bar` (the type has an unknown layout) | 
 |  | 
 | error: aborting due to 2 previous errors | 
 |  | 
 | Some errors have detailed explanations: E0412, E0512. | 
 | For more information about an error, try `rustc --explain E0412`. |