error[E0502]: cannot borrow `*x` as mutable because it is also borrowed as immutable --> $DIR/borrowck-object-lifetime.rs:20:13 | LL | let y = x.borrowed(); | - immutable borrow occurs here LL | let z = x.mut_borrowed(); | ^^^^^^^^^^^^^^^^ mutable borrow occurs here LL | y.use_ref(); | - immutable borrow later used here error[E0502]: cannot borrow `x` as mutable because it is also borrowed as immutable --> $DIR/borrowck-object-lifetime.rs:26:13 | LL | let y = x.borrowed(); | - immutable borrow occurs here LL | let z = &mut x; | ^^^^^^ mutable borrow occurs here LL | y.use_ref(); | - immutable borrow later used here error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0502`.