This is a library used in Rust for Arduboy to program Arduboy games in Rust.
https://github.com/ZennDev1337/Rust-for-Arduboy
You can license it under either one of those licenses:
Whichever you may prefer.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.