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