1error[E0506]: cannot assign to `p` because it is borrowed 2 --> $DIR/mut_while_borrow.rs:9:5 3 | 4LL | let r = foo(&p); 5 | -- borrow of `p` occurs here 6LL | p += 1; 7 | ^^^^^^ assignment to borrowed `p` occurs here 8LL | println!("{}", r); 9 | - borrow later used here 10 11error: aborting due to previous error 12 13For more information about this error, try `rustc --explain E0506`. 14