`move` not needed?

I believe that there is no need to use move here:

https://github.com/mainmatter/100-exercises-to-learn-rust/blob/d347d1f72ee77b96b2d51f0405292fd0590e8162/exercises/07_threads/02_static/src/lib.rs#L10-L11

What do you think?

Thank you for the tutorial!