Tokio and Futures have existed since 2016. I worked on the initial loqui implementation that powers rpc at Discord in raw Futures/Tokio in late 2018. async/await was also on nightly back then. Jesse finished it and migrated it to async/await and later used that as the basis for Read States. The timelines make perfect sense.

Alright. I stand corrected. I used Go back when it was beta, but it never stuck with me. I still like it for small script like tasks. I also happen to think Rust is amazing. The learning curve kept me away for a while.

It would still be interesting to see them post how go > 1.12 would do since it no longer has stop the world garbage collection.