Working on an Existing Cargo Package
If you download an existing package that uses Cargo, it’s really easy to get going.
First, get the package from somewhere. In this example, we’ll use
cloned from its repository on GitHub:
$ git clone https://github.com/rust-lang/regex.git $ cd regex
To build, use
$ cargo build Compiling regex v1.5.0 (file:///path/to/package/regex)
This will fetch all of the dependencies and then build them, along with the package.