** '''Why Rust?''' Code taken from Servo, uses parallel algorithms.
* U2F HID backend: {{bug|1388843}} (shipped in Firefox 57)
* XPIDL binding generator ({{bug|1293362}}) (landed in 60)
=== In progress ===
* Bindings/interop
** Immature rust-bindgen and cbindgen tools for general cross-language support.
** No XPIDL binding generator ({{bug|1293362}})
** No IPDL binding generator ({{bug|1379739}})
** No WebIDL binding generator for DOM components (Servo must have something here?)