Well this one specifically is listed under a fake company name which raises further questions. Is this just another attempt to conceal chinese spyware? See the discussion at https://news.ycombinator.com/item?id=40756408
Their code base is also weirdly convoluted, with many crates and files just proxying over to others. I've read and written a lot rust, and haven't seen this style really. Could be nothing but its odd.