Ch. 7 needs an update regarding rust 1.25

[ghost]

https://doc.rust-lang.org/book/second-edition/ch07-01-mod-and-the-filesystem.html:

We’ll create a skeleton of a library that provides some general networking functionality; we’ll concentrate on the organization of the modules and functions but we won’t worry about what code goes in the function bodies. We’ll call our library communicator. By default, Cargo will create a library unless another type of project is specified: if we omit the --bin option that we’ve been using in all of the chapters preceding this one, our project will be a library:

$ cargo new communicator
$ cd communicator

Rust 1.25 has changed this: rust-lang/cargo#5029

[steveklabnik]

This has already been fixed, it just needs to ride the trains: https://doc.rust-lang.org/nightly/book/second-edition/ch07-01-mod-and-the-filesystem.html

Thank you!