{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"err_inval!(Layout(LayoutError::ReferencesError(guar)))"}]}
        err_inval!(Layout(LayoutError::ReferencesError(guar))) => {
        }
            // This can occur in infallible promoteds e.g. when a non-existent type or field is