It's more than a decade old, and I have learned Rust on 3 occasions - first when I worked at Mozilla and heard about Rust as a project Graydon was working on at either a lunch and learn, or just chit chat around the Mozilla Vancouver office. Later I learned how to write some tools in Rust after not touching it in a few years when I changed companies. Finally, a year and half ago I had to actually start working in Rust on the regular as a dev and security engineer at Fastly.

There were substantial changes in work flow and tooling each time I dove in and learned the correct way to do things.