| error[E0277]: the size for values of type `str` cannot be known at compilation time | 
 |   --> $DIR/unsized-binding.rs:2:9 | 
 |    | | 
 | LL |     let x = *""; | 
 |    |         ^ doesn't have a size known at compile-time | 
 |    | | 
 |    = help: the trait `Sized` is not implemented for `str` | 
 |    = note: all local variables must have a statically known size | 
 | help: references are always `Sized`, even if they point to unsized data; consider not dereferencing the expression | 
 |    | | 
 | LL -     let x = *""; | 
 | LL +     let x = ""; | 
 |    | | 
 |  | 
 | error: aborting due to 1 previous error | 
 |  | 
 | For more information about this error, try `rustc --explain E0277`. |