1 error[E0596]: cannot borrow `x` as mutable, as it is not declared as mutable
2 --> $DIR/borrowck-mut-addr-of-imm-var.rs:3:25
4 LL | let y: &mut isize = &mut x;
5 | ^^^^^^ cannot borrow as mutable
7 help: consider changing this to be mutable
9 LL | let mut x: isize = 3;
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0596`.