error: mix of deref patterns and normal constructors
  --> $DIR/box-pattern-constructor-mismatch.rs:8:9
   |
LL |         box _ => {}
   |         ^^^^^ matches on the result of dereferencing `Box<i32>`
LL |         Box { .. } => {}
   |         ^^^^^^^^^^ matches directly on `Box<i32>`

error: aborting due to 1 previous error