error[E0382]: use of moved value: `x` --> $DIR/borrowck-reinit.rs:6:16 | LL | let mut x = Box::new(0); | ----- move occurs because `x` has type `Box`, which does not implement the `Copy` trait ... LL | drop(x); | - value moved here LL | let _ = (1,x); | ^ value used here after move | help: consider cloning the value if the performance cost is acceptable | LL | drop(x.clone()); | ++++++++ error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0382`.