rust_analyzer error: unknown request:...

[Kannen]

• Did you upgrade to latest plugin version?
• Did you upgrade to/compile latest binary? Run shell command
  bin/languageclient --version to get its version number.
• (Neovim users only) Did you check output of :checkhealth LanguageClient?
• Did you check troubleshooting?

Describe the bug

On rust file, while executing the rust-analyzer extension action "run Debug", nothing happen. The following error message is sent by rust-analyzer of stdErr:

[ERROR rust_analyzer::dispatch] unknown request: Request { id: RequestId(U64(17)), method: "workspace/executeCommand", params: Object({"arguments": Array([Object({"args": Object({"cargoArgs": Array([String("test"), String("--package"), String("vashy"), String("--lib")]), "executableArgs": Array([String("values::test::int"), String("--exact"), String("--nocapture")]), "workspaceRoot": String("/home/olivier/rust_src/vashy")}), "kind": String("cargo"), "label": String("test values::test::int"), "location": Object({"targetRange": Object({"end": Object({"character": Number(5), "line": Number(1080)}), "start": Object({"character": Number(4), "line": Number(1071)})}), "targetSelectionRange": Object({"end": Object({"character": Number(10), "line": Number(1072)}), "start": Object({"character": Number(7), "line": Number(1072)})}), "targetUri": String("file:///home/olivier/rust_src/vashy/src/values.rs")})})]), "command": String("rust-analyzer.debugSingle")}) }

Environment

• neovim/vim version

NVIM v0.4.4
Build type: Gentoo
Lua 5.1
Compilation: /usr/bin/x86_64-pc-linux-gnu-gcc -O2 -pipe -march=haswell -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1 -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wshadow -Wconversion -Wmissing-prototypes -Wimplicit-fallthrough -Wvla -fstack-protector-strong -fno-common -fdiagnostics-color=always -DINCLUDE_GENERATED_DECLARATIONS -D_GNU_SOURCE -DNVIM_MSGPACK_HAS_FLOAT32 -DNVIM_UNIBI_HAS_VAR_FROM -I/var/tmp/portage/app-editors/neovim-0.4.4-r100/work/neovim-0.4.4_build/config -I/var/tmp/portage/app-editors/neovim-0.4.4-r100/work/neovim-0.4.4/src -I/usr/include -I/var/tmp/portage/app-editors/neovim-0.4.4-r100/work/neovim-0.4.4_build/src/nvim/auto -I/var/tmp/portage/app-editors/neovim-0.4.4-r100/work/neovim-0.4.4_build/include
Compiled by portage@localhost

Features: +acl +iconv +tui

• This plugin version (git rev-parse --short HEAD):
  a42594c

• This plugin's binary version (bin/languageclient --version):
  languageclient 0.1.161

• Minimal vimrc content (A minimal vimrc is the smallest vimrc that could
  reproduce the issue.
  call plug#begin('~/.vim/plugged')

  Plug 'autozimu/LanguageClient-neovim', {
  \ 'branch': 'next',
  \ 'do': 'bash install.sh',
  \ }

  Plug 'junegunn/fzf'

  call plug#end()

  let g:LanguageClient_serverCommands = {
  \ 'rust': ['rust-analyzer'],
  \ }

  nmap <F4> <Plug>(lcn-code-lens-action)
  

• Language server link and version:

  rust-analyzer 0d03fe6

To Reproduce

Steps to reproduce the behavior:

• cargo new --lib project
• nvim -u min-vimrc.vim project/src/lib.rs ...
• Press F4
• select "rust-analyzer.debugSingle: Debug"
• Press Return
• Nothing happen

Current behavior

Nothing happen

Expected behavior

I suppose that a debugger should run.

[martskins]

Yes, this has been an issue ever since we added support for those code lenses. I'm not sure how we would go about implementing this to be honest. The Run lens itself is a little hacky. I think those were thought mainly for VSCode, and we just do what we can with them. Having said that, I would be happy to see this implemented.