Video: https://www.youtube.com/watch?v=DGAuLWdCCAI <!-- TRIAGEBOT_START --> <!-- TRIAGEBOT_ASSIGN_START --> This issue has been assigned to @GeertVL via [this comment](https://github.com/rust-lang/rustc-guide/issues/360#issuecomment-515055619). <!-- TRIAGEBOT_ASSIGN_DATA_START$${"user":"GeertVL"}$$TRIAGEBOT_ASSIGN_DATA_END --> <!-- TRIAGEBOT_ASSIGN_END --> <!-- TRIAGEBOT_END -->