Rust.md

1. rustup

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rustup default nightly # use nightly version
rustup default stable # use stable version
rustup update # update rust version

2. cargo build 时 Blocking waiting for file lock on build directory

1 2	pkill rls rm -rf ~/.cargo/registry/index/*

https://stackoverflow.com/questions/47565203/cargo-build-hangs-with-blocking-waiting-for-file-lock-on-the-registry-index-a?rq=1

3. vs code debug rust

安装CodeLLDB、Rust(rls)插件，然后配置launch.json。

{
  "type": "lldb",
  "request": "launch",
  "name": "Debug executable 'sslocal'",
  "cargo": {
    "args": ["build", "--bin=sslocal", "--package=shadowsocks-rust"],
    "filter": {
      "name": "sslocal",
      "kind": "bin"
    }
  },
  "args": ["-c", "${workspaceFolder}/config.json"],
  "cwd": "${workspaceFolder}",
  "env": { "RUST_BACKTRACE": "full" },
  "stopOnEntry": false,
  "sourceLanguages": ["rust"],
  "sourceMap": {
    // 这个配置可以debug std lib
    "/rustc/8d69840ab92ea7f4d323420088dd8c9775f180cd": "${env:HOME}/.rustup/toolchains/stable-x86_64-apple-darwin/lib/rustlib/src/rust"
  }
},

https://jason-williams.co.uk/debugging-rust-in-vscode