At the time of writing, rust-lang.org has its Tutorial links pointing to http://doc.rust-lang.org/doc/master/tutorial.html and http://doc.rust-lang.org/doc/0.10/tutorial.html for Trunk and 0.10 respectivly.

Unfortunately, neither of these links load.