error[E0515]: cannot return value referencing local variable `z` --> $DIR/issue-48697.rs:7:5 | LL | let k = f(&z); | -- `z` is borrowed here LL | f(x) | ^^^^ 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`.