error[E0382]: use of moved value: `x`
  --> $DIR/liveness-move-call-arg-2.rs:9:18
   |
LL |         let x: Box<isize> = Box::new(25);
   |             - move occurs because `x` has type `Box<isize>`, which does not implement the `Copy` trait
LL |
LL |         loop {
   |         ---- inside of this loop
LL |             take(x);
   |                  ^ value moved here, in previous iteration of loop
   |
note: consider changing this parameter type in function `take` to borrow instead if owning the value isn't necessary
  --> $DIR/liveness-move-call-arg-2.rs:1:13
   |
LL | fn take(_x: Box<isize>) {}
   |    ----     ^^^^^^^^^^ this parameter takes ownership of the value
   |    |
   |    in this function
help: consider cloning the value if the performance cost is acceptable
   |
LL |             take(x.clone());
   |                   ++++++++

error: aborting due to 1 previous error

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