rust配置国内的镜像源

第一步 找到用户目录下的.cargo目录

创建​​config​​文件

[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"

[http]
check-revoke = false