Assert two expressions are Ready(_) and their values are not equal.
Pseudocode:
(a ⇒ Ready(a̅) ⇒ a̅) ≠ (b ⇒ Ready(b̅) ⇒ b̅)
§Example
use std::task::Poll;
use std::task::Poll::*;
let a: Poll<i8> = Ready(1);
let b: Poll<i8> = Ready(2);
assert_ready_ne!(a, b);
§Module macros