| error[E0499]: cannot borrow `thing` as mutable more than once at a time | |
| --> $DIR/retain-resume-ref.rs:24:25 | |
| | | |
| LL | gen.as_mut().resume(&mut thing); | |
| | ---------- first mutable borrow occurs here | |
| LL | gen.as_mut().resume(&mut thing); | |
| | ------ ^^^^^^^^^^ second mutable borrow occurs here | |
| | | | |
| | first borrow later used by call | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0499`. |