No `traits` in `num`

I'm working seriously with generics for the first time, numerical generics to be precise.
I'm trying to import std::num::traits as the documentation instructs, but when I simply add a use statement for it in a default cargo project's i get this error:

error[E0432]: unresolved import `std::num::traits`
 --> src/
1 | use std::num::traits;
  |     ^^^^^^^^^^^^^^^^ no `traits` in `num`

For more information about this error, try `rustc --explain E0432`.

What could be causing this problem?
Thanks for the attention

Which documentation, since there indeed is no std::num::traits (check here)?
On the other hand, there is a num_traits crate with all the numeric traits you want.


Since is currently offline, I accidentally treated this page as part of the official docs. Thanks for spotting the error

This is a documentation for the num crate (and it's not clear for which version, exactly), not for the standard library.