| $ cargo run |
| Compiling unsafe-example v0.1.0 (file:///projects/unsafe-example) |
| error[E0499]: cannot borrow `*slice` as mutable more than once at a time |
| --> src/main.rs:6:30 |
| | |
| 1 | fn split_at_mut(slice: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) { |
| | - let's call the lifetime of this reference `'1` |
| ... |
| 6 | (&mut slice[..mid], &mut slice[mid..]) |
| | -------------------------^^^^^-------- |
| | | | | |
| | | | second mutable borrow occurs here |
| | | first mutable borrow occurs here |
| | returning this value requires that `*slice` is borrowed for `'1` |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0499`. |
| error: could not compile `unsafe-example`. |
| |
| To learn more, run the command again with --verbose. |