Macro assert_ne_hex 

macro_rules! assert_ne_hex {
    ($left:expr, $right:expr $(,)?) => { ... };
    ($left:expr, $right:expr, $($arg:tt)+) => { ... };
}

Asserts that two expressions are not equal to each other

On panic, this macro will print values of the expressions in their {:#x?} (hexadecimal) representation