Couldn't compare float number in Rust Lang

float_compair.rs

fn main() {
    let val = vec![1.3, 1.2, 3.0];

    val.sort();
    for v in val { println!("{}", v); }
}
/*
   Compiling sort v0.1.0 (file:///ome/katsu/Prohgram/Rust/zatsu/rust/nlp100/sort)
error[E0277]: the trait bound `{float}: std::cmp::Ord` is not satisfied
 --> main.rs:4:10
  |
4 |     &val.sort();
  |          ^^^^ the trait `std::cmp::Ord` is not implemented for `{float}`
  |
  = help: the following implementations were found:
            <&'a A as std::cmp::Ord>
            <&'a mut A as std::cmp::Ord>
            <str as std::cmp::Ord>
            <(A, B, C, D, E, F) as std::cmp::Ord>
          and 190 others

error: aborting due to previous error

error: Could not compile `sort`.

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