error[E0596]: cannot borrow data in an `Rc` as mutable --> $DIR/borrowck-borrow-overloaded-deref.rs:12:19 | LL | let __isize = &mut *x; | ^^^^^^^ cannot borrow as mutable | = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `Rc` error[E0596]: cannot borrow data in an `Rc` as mutable --> $DIR/borrowck-borrow-overloaded-deref.rs:16:19 | LL | let __isize = &mut *x; | ^^^^^^^ cannot borrow as mutable | = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `Rc` error[E0596]: cannot borrow data in an `Rc` as mutable --> $DIR/borrowck-borrow-overloaded-deref.rs:24:5 | LL | &mut **x | ^^^^^^^^ cannot borrow as mutable | = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `Rc` error[E0596]: cannot borrow data in an `Rc` as mutable --> $DIR/borrowck-borrow-overloaded-deref.rs:28:5 | LL | &mut **x | ^^^^^^^^ cannot borrow as mutable | = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `Rc` error[E0594]: cannot assign to data in an `Rc` --> $DIR/borrowck-borrow-overloaded-deref.rs:32:5 | LL | *x = 3; | ^^^^^^ cannot assign | = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `Rc` error[E0594]: cannot assign to data in an `Rc` --> $DIR/borrowck-borrow-overloaded-deref.rs:36:5 | LL | **x = 3; | ^^^^^^^ cannot assign | = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `Rc` error[E0594]: cannot assign to data in an `Rc` --> $DIR/borrowck-borrow-overloaded-deref.rs:40:5 | LL | **x = 3; | ^^^^^^^ cannot assign | = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `Rc` error: aborting due to 7 previous errors Some errors have detailed explanations: E0594, E0596. For more information about an error, try `rustc --explain E0594`.