error[E0505]: cannot move out of `x` because it is borrowed --> $DIR/borrowck-no-cycle-in-exchange-heap.rs:16:15 | LL | Cycle::Node(ref mut y) => { | --------- borrow of `x.0` occurs here LL | y.a = x; | --- ^ move out of `x` occurs here | | | borrow later used here error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0505`.