Rust 1.18.0-nightly
94e884b63

# The Rust Programming Language Has Moved

When The Rust Programming Language only had one edition, it was all hosted at `book/`. Now that it has two, they are properly namespaced under `first-edition/` and `second-edition/`.

You've found this page because you have a link to the older URL structure; you probably want to visit first-edition/ if you need the exact older page; if you're trying to learn Rust, checking out the second edition might be a better choice.