Rust's not there yet and I wonder if it can compete. The thing is it is too specialized and low level (not that it is a bad thing for what it is intended for). The problem with all of the low-level things is that they are seriously undervalued.

I am glad that there is servo but we need something like an operating system (IoT might work for the start). I hope Samsung changes its plans with Tizen and eventually will develop something with Rust in mind.

Every big data platform I know of is or already has implemented manual memory management (they all run on the JVM). I can see Rust doing well in this world. It's hard to say things like Spark are undervalued. (Two data points: ~$50M investment in Databricks, the company commercialising Spark. IBM just committed ~3.5K developers to working on Spark projects.)

Big data could be huge for Rust. I have a friend who works in the Hadoop ecosystem who's about to take a 90% pay cut to leave his current job in favor of using Rust at a startup. If I had gratuitous amounts of money, this is the field that I'd be investing in.

https://github.com/frankmcsherry/timely-dataflow

https://github.com/frankmcsherry/differential-dataflow

Nothing much useful to contribute, except that they mostly work, are largely unsafe-free (unsafe in some sorting, and a Drain replacement), and build on 1.0 stable.