Cargo 子命令，用于下载crate源代码

Cargo subcommand for downloading crate sources

Usage: cargo dl [OPTIONS] <CRATE[@VERSION_REQ]>...

Arguments:
  <CRATE[@VERSION_REQ]>...
          The crate(s) to download.

          Optionally including which version of the crate to download after `@`,
          in the standard semver constraint format used in Cargo.toml. If
          unspecified the newest non-prerelease, non-yanked version will be
          fetched.

Options:
  -x, --extract
          Specify this flag to have the crate extracted automatically.

          Note that unless changed via the --output flag, this will extract the
          files to a new subdirectory bearing the name of the downloaded crate
          archive.

  -o, --output <OUTPUT>
          Normally, the compressed crate is written to a file (or directory if
          --extract is used) based on its name and version.  This flag allows to
          change that by providing an explicit file or directory path. (Only
          when downloading a single crate)

      --allow-yanked
          Allow yanked versions to be chosen

      --no-cache
          Disable checking cargo cache for the crate file

      --no-index-update
          Disable updating the cargo index before downloading (if out of date
          you may not download the latest matching version)

  -h, --help
          Print help (see a summary with '-h')

  -V, --version
          Print version

Rust 版本策略

此crate仅支持当前稳定版本的Rust，补丁版本可能随时使用新功能。

许可证

根据您的选择，许可协议为以下之一：

• Apache 许可协议 2.0 (LICENSE-APACHE 或 https://apache.ac.cn/licenses/LICENSE-2.0)
• MIT 许可协议 (LICENSE-MIT 或 http://opensource.org/licenses/MIT)

由您选择。

贡献

除非您明确表示，否则您提交的任何有意包含在作品中的贡献将按照上述方式双许可，不附加任何其他条款或条件。