1 error[E0507]: cannot move out of `*y` which is behind a shared reference
2 --> $DIR/borrowck-issue-2657-2.rs:7:18
7 | move occurs because `*y` has type `Box<i32>`, which does not implement the `Copy` trait
8 | help: consider borrowing here: `&*y`
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0507`.