{"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"///"}]}
    /// Allows unsized rvalues at arguments and parameters.
    (removed, unsafe_no_drop_flag, "1.0.0", None, None),
    (removed, unsized_locals, "1.89.0", Some(48055), Some("removed due to implementation concerns; see https://github.com/rust-lang/rust/issues/111942")),