Hi!

I'm trying to use echodoc with Rust/deoplete/racer, and it's very buggy. Whenever I try to use it, it does nothing until I type the first character of the arguments, at which point it displays function_name(x where x is the first character of the arguments. Typing anything else doesn't do anything; it just stays there until I exit insert mode.

Here are some images of this happening:

I also tried with let g:echodoc#type = "signature", which had interesting though also invalid results that I cannot reproduce for some reason. I was seeing type signatures like () -> -> bool, which I believe is nonsense for Rust (though the function did return bool). When I try to reproduce, I get the same issue as above.

Here's my neovim version information (literally just reinstalled to make sure):

Deoplete is version 4.0 (also just :PlugUpdated)

echodoc is version 1.0

Thanks for a(nother) really cool plugin!