warning: denote infinite loops with `loop { ... }`
  --> $DIR/liveness-move-in-while.rs:8:9
   |
LL |         while true { while true { while true { x = y; x.clone(); } } }
   |         ^^^^^^^^^^ help: use `loop`
   |
   = note: `#[warn(while_true)]` on by default

warning: denote infinite loops with `loop { ... }`
  --> $DIR/liveness-move-in-while.rs:8:22
   |
LL |         while true { while true { while true { x = y; x.clone(); } } }
   |                      ^^^^^^^^^^ help: use `loop`

warning: denote infinite loops with `loop { ... }`
  --> $DIR/liveness-move-in-while.rs:8:35
   |
LL |         while true { while true { while true { x = y; x.clone(); } } }
   |                                   ^^^^^^^^^^ help: use `loop`

error[E0382]: borrow of moved value: `y`
  --> $DIR/liveness-move-in-while.rs:7:24
   |
LL |     let y: Box<isize> = 42.into();
   |         - move occurs because `y` has type `Box<isize>`, which does not implement the `Copy` trait
...
LL |     loop {
   |     ---- inside of this loop
LL |         println!("{}", y);
   |                        ^ value borrowed here after move
LL |         while true { while true { while true { x = y; x.clone(); } } }
   |         ----------   ----------   ----------       - value moved here, in previous iteration of loop
   |         |            |            |
   |         |            |            inside of this loop
   |         |            inside of this loop
   |         inside of this loop
   |
   = note: this error originates in the macro `$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 |         while true { while true { while true { x = y.clone(); x.clone(); } } }
   |                                                     ++++++++

error: aborting due to previous error; 3 warnings emitted

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