racerd completion failure: CouldNotOpenTerminal

[c4rlo]

Trying to use the Rust completion, I get the following error:

HTTPError: 500 Server Error: Internal Server Error for url: http://127.0.0.1:55381/list_completions

Debug info:

Printing YouCompleteMe debug information...
-- Server has Clang support compiled in: True
-- Clang version: clang version 3.8.0 (tags/RELEASE_380/final)
-- racerd
--   listening at: http://127.0.0.1:55381
--   racerd path: /home/carlo/.vim/plugged/YouCompleteMe/third_party/ycmd/ycmd/completers/rust/../../../t
hird_party/racerd/target/release/racerd
--   stdout log: /tmp/ycm_temp/racerd_55381_stdout.log
--   stderr log: /tmp/ycm_temp/racerd_55381_stderr.log
-- Server running at: http://127.0.0.1:48275
-- Server process ID: 13709
-- Server logfiles:
--   /tmp/ycm_temp/server_48275_stdout.log
--   /tmp/ycm_temp/server_48275_stderr.log

Looking at the racerd stderr logfile, I see:

ERROR:iron::iron: Error handling:
Request {
    url: Url { scheme: "http", host: Ipv4(127.0.0.1), port: 55381, path: ["list_completions"], username: None, password: None, query: None, fragment: None }
    method: Post
    remote_addr: V4(127.0.0.1:37504)
    local_addr: V4(127.0.0.1:55381)
}
Error was: CouldNotOpenTerminal

This is on Arch Linux.

Looks like this this comes out of the iron framework's logger component. And looks like they've recently merged a related-looking PR.

[Valloric]

@jwilm

[Ravenow]

As temp workaround u could use vim from any terminal emulator. I have subj problem only in gVim

[andoriyu]

I have the same problem in NeoVim.

[jwilm]

racerd is updated with the latest logger. ycmd still needs to be updated with the latest racerd submodule, but I've run out of time this morning.

[puremourning]

@jwilm if it is just updating the submodule to master, I can do it this evening?

[puremourning]

@andoriyu could you post a reliable test case I can use to confirm it is resolved?

[jwilm]

@puremourning In theory, it's just updating the submodule, but I wanted to test in an editor that everything is working ok. There's also a change appveyor won't be happy with the latest racerd (would probably just need to update rust compiler version).

[andoriyu]

@puremourning no idea how to test it, but I know that test suit you have now is failing when you run in it inside neovim (it has terminal emulator within)

[puremourning]

We don't support neovim, sorry and i'm not sure what you mean by the test suite failing. That could be for any number of reasons.

In any case, @jwilm after updating the submodule and running the tests, i get successful completions in Vim for the rust test files in ycmd/tests/rust/testdata, so it seems good to me. I'll push the branch and see what appveyor makes of it. If it works, bonza. If not, then meh.

@andoriyu if you want to try out the fix, you can just check out my branch of ycmd (in third_party/ycmd) or manually pull the third_party/ycmd/third_party/racerd submodule in your YCM installation.

[andoriyu]

@puremourning I mean test suit was failing when it was run inside of neovim because of "CouldNotOpenTerminal".

It's all working now in NeoVim.