[phloxicon]

Maybe Servo will be their clean slate. I know it's an experimental browser created to help test a language and parallelism in web APIs, but if it does well, it could come to replace Firefox. This is unlikely and years away at best but it's possible.

[metajack]

You have the dependency graph wrong. Servo was not created to help test Rust. Rust was created to help build Servo.

[vsviridov]

Servo is not even a browser. It's a layout/rendering engine. It has nothing else beyond that.

[valarauca1]

Gecko is not even a browser, its a layout/render engine.

Its currently a research project, but the hope is the project will mature to the point that it can be incorporated. It also allows for Rust Developers to see immediate uses and usability issues with changes to the Rust language.