{"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"ty::Coroutine(..)"}]}
                        ty::Coroutine(..) => PathElem::CoroutineTag,
                        ty::Adt(def, ..) if def.is_enum() => PathElem::EnumTag,
                        _ => bug!("non-variant type {:?}", layout.ty),