{"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"|w:"}]}
            |w: &mut dyn io::Write, alloc: ConstAllocation<'tcx>| -> io::Result<()> {
        let mut write_allocation_track_relocs =
                // `.rev()` because we are popping them from the back of the `todo` vector.