"Getting started" page in the book mentions "crates" before explaining what a crate is

[K900]

https://doc.rust-lang.org/nightly/book/getting-started.html

With simple projects, Cargo doesn't bring a whole lot over just using rustc, but it will become useful in future. With complex projects composed of multiple crates, it’s much easier to let Cargo coordinate the build. With Cargo, you can just run cargo build, and it should work the right way.

The concept of crates is only (properly) introduced in the next chapter.

[flukejones]

Created pull request which hopefully addresses the issue.

[steveklabnik]

This was fixed!