I don't think you'd want to write an operating system in Rue. I may not include an "unsafe" concept, and will probably require a runtime. So that's some areas where Rust will make more sense.
As for Go... I dunno. Go has a strong vision around concurrency, and I just don't have one yet. We'll see.
FWIW, I really like the way C# has approached this need... most usage is exposed via attribute declaration/declaration DllImport for P/Invoke. Contrasted with say JNI in Java or even the Go syntax. The only thing that might be a significant improvement would be an array/vector of lookup names for the library on the system given how specific versions are often tagged in Linux vs Windows.
As for Go... I dunno. Go has a strong vision around concurrency, and I just don't have one yet. We'll see.