Missing sum() and product() for u128/i128

[leonardo-m]

#![feature(i128_type)]
#![allow(unused_variables)]
fn main() {
    let r1: u128 = [10, 20].iter().sum();
    let r2: i128 = [10, 20].iter().sum();
    let r3: u128 = [10, 20].iter().product();
    let r4: i128 = [10, 20].iter().product();
}


error[E0277]: the trait bound `u128: std::iter::Sum<&{integer}>` is not satisfied
 --> ...\test.rs:4:36
  |
4 |     let r1: u128 = [10, 20].iter().sum();
  |                                    ^^^ the trait `std::iter::Sum<&{integer}>` is not implemented for `u128`

error[E0277]: the trait bound `i128: std::iter::Sum<&{integer}>` is not satisfied
 --> ...\test.rs:5:36
  |
5 |     let r2: i128 = [10, 20].iter().sum();
  |                                    ^^^ the trait `std::iter::Sum<&{integer}>` is not implemented for `i128`

error[E0277]: the trait bound `u128: std::iter::Product<&{integer}>` is not satisfied
 --> ...\test.rs:6:36
  |
6 |     let r3: u128 = [10, 20].iter().product();
  |                                    ^^^^^^^ the trait `std::iter::Product<&{integer}>` is not implemented for `u128`

error[E0277]: the trait bound `i128: std::iter::Product<&{integer}>` is not satisfied
 --> ...\test.rs:7:36
  |
7 |     let r4: i128 = [10, 20].iter().product();
  |                                    ^^^^^^^ the trait `std::iter::Product<&{integer}>` is not implemented for `i128`

[zackmdavis]

Looks to be as simple as adding arguments to the invocation of the implementing macro. PR forthcoming.