| error[E0596]: cannot borrow `v` as mutable, as it is not declared as mutable | |
| --> $DIR/writing-to-immutable-vec.rs:3:5 | |
| | | |
| LL | v[1] = 4; | |
| | ^ cannot borrow as mutable | |
| | | |
| help: consider changing this to be mutable | |
| | | |
| LL | let mut v: Vec<isize> = vec![1, 2, 3]; | |
| | +++ | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0596`. |