{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"//"}]}
        // and is only the fallback when the nice error fails. Consider improving this some more.
        // FIXME: This error message isn't great, but it doesn't show up in the existing UI tests,
        tcx.dcx().create_err(HigherRankedLifetimeError { cause: None, span })