Question: Is this crate official?

[ghost]

I want to know if this is maintained by the rust team

[cuviper]

No, it's not "official". I do happen to be a member of several Rust teams, including the library team, and this code originally came from the standard library before it was extracted in the stabilization for Rust 1.0. However, the ongoing maintenance of all of the rust-num crates is separate from the official rust-lang project.

[ghost]

Thank you for the fast response. Would I be able to use this crate while having in mind that it won't suddenly disappear one day?

[cuviper]

Yes, it should remain available, even as maintenance efforts may wax or wane.

In general, crates.io never removes packages. Even if a developer were to yank all past versions, you could still use them if they're already in your Cargo.lock.