All rust process in `top` are called `<main>`

[alexcrichton]

I think this is fallout of #21678, and it's somewhat unfortunate :(

cc @vojtechkral

[vojtechkral]

Yup. Didn't think of that. So don't set the name of the main thread I suppose?

[alexcrichton]

Yeah that may be the best option after all (sorry for recommending the opposite!)

[vojtechkral]

Okay, no problem, I'll send PR...

[alexcrichton]

Thanks!