warning: this suppresses the borrow checker in an unsafe, unsound, and unstable way that produces undefined behaviour. this is not suitable for any purpose beyond educational experimentation.
 --> $DIR/on_block.rs:6:5
  |
6 |     #[you_can::turn_off_the_borrow_checker]
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: the borrow checker is suppressed for these references.
  --> $DIR/on_block.rs:9:21
   |
9  |         let mut_1 = &mut owned[0];
   |                     ^^^^^^^^^^^^^
10 |         let mut_2 = &mut owned[1];
   |                     ^^^^^^^^^^^^^

warning: 2 warnings emitted