[pavon]

And an even smaller caveat: If you use older (distro provided) Rust versions note that it may look like there is some partial implementation of allowing mixing with NoneError, etc. Ignore this. It doesn't work, and was removed in later versions.

[nicoburns]

But also: don't use your distro provided version of Rust. It's intended for compiling distro packages that depend on Rust, not for developing with Rust. Get Rust from https://rustup.rs

[pavon]

And hence for writing rust code you would like to package for your distro of choice. I publish my software because I want others to use it, and including it in distro repos is the most friendly way to do that.