{"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"self.infcx.next_region_var(RegionVariableOrigin::Misc(self.body.span),"}]}
                self.infcx.next_region_var(RegionVariableOrigin::Misc(self.body.span), || {
                args.coroutine_captures_by_ref_ty(),
                    RegionCtxt::Unknown