These links point to an outdated version of the Rust book, please remove/fix them:

We’ll only talk about the borrow checker in this article, but you can also read about the three main pillars of Rust’s memory management, which are Ownership, Reference & Borrowing, and Lifetimes.

This is the current version of the Rust book: https://doc.rust-lang.org/stable/book/ch04-01-what-is-ownership.html