error[E0308]: mismatched types
  --> $DIR/coerce-box-new-to-unboxed.rs:2:21
   |
LL |     let _: String = Box::new(String::new());
   |            ------   ^^^^^^^^^^^^^^^^^^^^^^^ expected `String`, found `Box<String>`
   |            |
   |            expected due to this
   |
   = note: expected struct `String`
              found struct `Box<String>`
help: consider removing the Box
   |
LL -     let _: String = Box::new(String::new());
LL +     let _: String = String::new();
   |

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0308`.