{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"self.tcx.ensure_ok().coerce_unsized_info(impl_source.impl_def_id)"}]}
                            self.tcx.ensure_ok().coerce_unsized_info(impl_source.impl_def_id)
                        && let Err(guar) =
                    {