error[E0594]: cannot assign to `*s.pointer`, which is behind a `&` reference --> $DIR/borrowck-assign-to-andmut-in-aliasable-loc.rs:9:5 | LL | *s.pointer += 1; | ^^^^^^^^^^^^^^^ `s` is a `&` reference, so the data it refers to cannot be written | help: consider changing this to be a mutable reference | LL | fn a(s: &mut S) { | +++ error[E0594]: cannot assign to `*s.pointer`, which is behind a `&` reference --> $DIR/borrowck-assign-to-andmut-in-aliasable-loc.rs:17:5 | LL | *s.pointer += 1; | ^^^^^^^^^^^^^^^ `s` is a `&` reference, so the data it refers to cannot be written | help: consider changing this to be a mutable reference | LL | fn c(s: &mut &mut S) { | +++ error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0594`.