[jruderman]

The last question was about using Rust for Servo, and in particular whether there had been any major pain points. Patrick Walton helped to answer (45:48):

~ The overall discipline hasn't been too difficult to been follow.

~ Most of the issues we hit are issues in the implementation. (e.g. the precise way the borrow-checker checks inveriants, reasons about lifetimes and whatnot.) These kinds of issues are fixable, and we continue to improve them all the time.

~ I don't speak for the entire Servo team, but I feel like the discipline, the overall type-system strategy that Rust enforces, has been pretty friendly.

~ We still have a lot of unsafe code, but a lot of it is unavoidable, for calling C libraries. And also we're doing things like: we have Rust objects which are managed by the SpiderMonkey [JavaScript] garbage collector. Which is really cool that we can do that, but the interface has to be written in the unsafe dialect [of Rust].