An update of Lindsey Kuper's excellent Rust FizzBuzz using Rust 1.x, as a way of taking some tentative first steps towards learning the language.
The by_reference branch contains a variant which passes the results of the division operations to int_to_rem by reference, where they're destructured. Note that this isn't necessarily more efficient or flexible, however, since i32 is a primitive type, and thus implements the Copy trait.
This approach to solving FizzBuzz using Rust is by no means the fastest way to do it (see Chris Morgan's explorations for more), but I find this implementation particularly intuitive, and well-suited to the language.