| warning: unused generator that must be used | |
| --> $DIR/yield-in-box.rs:9:5 | |
| | | |
| LL | / || { | |
| LL | | let y = 2u32; | |
| LL | | { | |
| LL | | let _t = box (&x, yield 0, &y); | |
| ... | | |
| LL | | } | |
| LL | | }; | |
| | |______^ | |
| | | |
| = note: `#[warn(unused_must_use)]` on by default | |
| = note: generators are lazy and do nothing unless resumed | |
| warning: 1 warning emitted | |