mac下安装rust

export RUSTUP_DIST_SERVER=https://mirrors.ustc.edu.cn/rust-static
export RUSTUP_UPDATE_ROOT=https://mirrors.ustc.edu.cn/rust-static/rustup

curl https://sh.rustup.rs -sSf | sh

source $HOME/.cargo/env

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