Rusticks is a barebones kernel written in Rust as an excercise in learning low level programming with Rust. It is more or less a Rust rewrite of Sticks.
On booting, it shows a blank screen with some text on it. It has basic keyboard support and echos typed characters on to the screen.
Building Rusticks requires NASM, a Rust cross compiler and GNU ld. On a new Vagrant Ubuntu 14.04 VM, install the dependencies the following way:
curl https://sh.rustup.rs -sSf | sh
rustup target add i686-unknown-linux-gnu
sudo apt-get install nasm
sudo apt-get install qemu-system-x86
Use make to build and make run to run in QEMU.
Building on OS X should also work as long as GNU ld is available.
Since Rusticks is based on Sticks, the information provided in the Sticks readme also applies here.
In addition, rustboot and puddle were useful references, despite being written before Rust 1.0. If starting from scratch, Philipp Oppermann's guide looks like an excellent resource.
Rusticks is available in the public domain. See COPYING.