Thanks. Sorry, I think this one was just my inattentiveness.

Rust: Clarify Output Type of Function

The Rust version of this kata does not specify that the output should be an Option<(u64, u32)>, and this causes a few cryptic error messages from the compiler in random testing depending on the output variant. When an Option<(u64, u64)> is used, there is an error regarding the use of .pow() on a u64, but no indication that this is related to the kata.

Almost did the same thing...but I changed the trait bounds on array_diff to also require that T implement the Copy trait.
Then I used iter and copied instead of just using into_iter like I should have...because I initially misspelled into_iter while trying this exact thing :P