| error[E0596]: cannot borrow `*buf` as mutable, as it is behind a `&` reference | |
| --> $DIR/issue-40823.rs:3:5 | |
| | | |
| LL | let mut buf = &[1, 2, 3, 4]; | |
| | ------------- help: consider changing this to be a mutable reference: `&mut [1, 2, 3, 4]` | |
| LL | buf.iter_mut(); | |
| | ^^^ `buf` is a `&` reference, so the data it refers to cannot be borrowed as mutable | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0596`. |