{"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"Err(hir::LoopIdError::OutsideLoopScope)"}]}
                    Err(hir::LoopIdError::OutsideLoopScope) => None,
                    Ok(loop_id) => Some(loop_id),
                    Err(hir::LoopIdError::UnlabeledCfInWhileCondition) => {