Data trait not implemented for u128

[koutoftimer]

#[derive(Clone, Data, Default, Lens)]
struct State {
    count: u128,
}

gives compilation error

   Compiling druit-test v0.1.0 (E:\Projects\rust\druit-test)
error[E0277]: the trait bound `u128: druid::Data` is not satisfied
  --> src\main.rs:10:17
   |
10 | #[derive(Clone, Data, Default, Lens)]
   |                 ^^^^ the trait `druid::Data` is not implemented for `u128`
   |
   = note: required by `druid::Data::same`
   = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
error: could not compile `druit-test`.

To learn more, run the command again with --verbose.