{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"sym::unreachable"}]}
        sym::unreachable => (0, 0, vec![], tcx.types.never),
        sym::abort => (0, 0, vec![], tcx.types.never),
        sym::breakpoint => (0, 0, vec![], tcx.types.unit),