error[E0382]: borrow of moved value: `x`
  --> $DIR/liveness-use-after-move.rs:6:20
   |
LL |     let x: Box<_> = 5.into();
   |         - move occurs because `x` has type `Box<i32>`, which does not implement the `Copy` trait
LL |     let y = x;
   |             - value moved here
LL |
LL |     println!("{}", *x);
   |                    ^^ value borrowed here after move
   |
   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider cloning the value if the performance cost is acceptable
   |
LL |     let y = x.clone();
   |              ++++++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0382`.