{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"//"}]}
                // FIXME(deref_patterns): Remove this special handling once `box_patterns` is gone.
            DerefPattern(_) if pat.ty().is_box() && !self.tcx.features().deref_patterns() => {
                // HACK(@dianne): `box _` syntax is exposed on stable in diagnostics, e.g. to