{"ast_node_type":"struct","tokens":[{"end":79,"kind":"keyword","start":0,"text":"//"}]}
            // FIXME(#80564): We permit struct fields and match arms to have an
                if self.tcx.is_const_fn(hir_id.expect_owner().to_def_id()) => {}
            // `#[allow_internal_unstable]` attribute with just a lint, because we previously