thank you very much guys
I have looked into RFCs, but it seems to me as it requires that I am fully fledged Rust Developer. And I still consider me as a newbie.
Usually at our university we create something. But the mainly research-based thesis sounds also great, I have to ask my professor if this one possible.
And thanks for FFI idea, this one I consider as doable and interesting. Because I am fully fledged Java Developer and so I could combine both worlds.
Another idea, which came across my mind , is to help Project Gotham. It's async web framework which leverages Tokio and Hyper. And they like to integrate Diesel into Gotham.