error[E0515]: cannot return value referencing local variable `z` --> $DIR/promoted-closure-pair.rs:7:5 | LL | p.1(&z) | ^^^^--^ | | | | | `z` is borrowed here | returns a value referencing data owned by the current function error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0515`.