| error[E0596]: cannot borrow `v` as mutable, as it is not declared as mutable | |
| --> $DIR/writing-to-immutable-vec.rs:14:5 | |
| | | |
| LL | let v: Vec<isize> = vec![1, 2, 3]; | |
| | - help: consider changing this to be mutable: `mut v` | |
| LL | v[1] = 4; //~ ERROR cannot borrow immutable local variable `v` as mutable | |
| | ^ cannot borrow as mutable | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0596`. |