{"ast_node_type":"other","tokens":[{"end":139,"kind":"keyword","start":0,"text":"///"}]}
    ///   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    ///   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ///   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>