Alternative help for missing min/max function

[leonardo-m]

fn main() {
    let x = 5;
    let y = 9;
    println!("{}", max(x, y));
}

With rustc (1.48.0-nightly 0d0f6b1 2020-09-03) gives:

error[E0425]: cannot find function `max` in this scope
 --> ...\test.rs:4:20
  |
4 |     println!("{}", max(x, y));
  |                    ^^^ not found in this scope
  |
help: consider importing one of these items
  |
1 | use core::cmp::max;
  |
1 | use std::cmp::max;
  |

But it could suggest instead to use:

x.max(y)

[Noratrieb]

We chose to not do this, see #147102