{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"self.tainted_by_errors.set(Some(guar));"}]}
                self.tainted_by_errors.set(Some(guar));
            ty::ReError(guar) => {
                // We use the `'static` `RegionVid` because `ReError` doesn't actually exist in the