1 error[E0596]: cannot borrow `*x` as mutable, as it is behind a `&` reference
2 --> $DIR/borrowck-call-method-from-mut-aliasable.rs:17:5
5 | ^^^^^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable
7 help: consider changing this to be a mutable reference
9 LL | fn b(x: &mut Foo) {
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0596`.