rust trivial

Update

rustup update

rust Bible

https://doc.rust-lang.org/book/

A Chinese manual, forget intents and go

https://kaisery.gitbooks.io/rust-book-chinese/content/content/Getting%20Started%20%E5%87%86%E5%A4%87.html

rust change source

Open the $ HOME / .cargo / config

[source.crates-io]
registry = "https://github.com/rust-lang/crates.io-index"
replace-with = 'ustc'
[source.ustc]
registry = "git://mirrors.ustc.edu.cn/crates.io-index"