* Linebreaking with xi-unicode: {{bug|1290022}}
* Optimizing WebVM compiler backend: [https://github.com/stoklund/cretonne/ cretonne]
** '''Why Rust?''' WellNew, well-separated component with a clear interface.
* Share [https://github.com/servo/gecko-media media playback stack] with Servo.
** '''Why Rust?''' We're not rewriting this in Rust because the current code is well-tested and performant. The plan is to first port the C++ module from Firefox into Servo.