Firefox 48 Will Take The First Rust Code Into Production

[plonoma]

Switching the Firefox extensions API to one compatible with Chrome gives three advantages over the current Firefox add-ons API:
2. This API works better with multi-process, which is something Firefox needs to compete with Chrome in performance.

Async is about responsiveness, not performance.
Although superficially they can be made to look similar they are very different.

[Awesomeness]

Building Firefox from source has just gotten more complicated. Rust is forcing itself on unsuspecting virgin distros.

Unsuspecting? If they don't expect what Mozilla is announcing since years, they need to die.