Code actions broken on newest rust-analyzer

[YaLTeR]

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

Describe the bug

Starting from 2020-05-25, rust-analyzer returns no code actions to LanguageClient-neovim.

Environment

• neovim/vim version (nvim --version or vim --version): v0.4.3
• This plugin version (git rev-parse --short HEAD): 7c741d0
• This plugin's binary version (bin/languageclient --version): 0.1.156
• Minimal vimrc content (A minimal vimrc is the smallest vimrc that could
  reproduce the issue. Refer to an example here):

call plug#begin('~/.config/nvim/plugged')

Plug 'autozimu/LanguageClient-neovim', {
    \ 'branch': 'next',
    \ 'do': 'bash install.sh',
    \ }
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }

call plug#end()

augroup filetype_rust
    autocmd!
    autocmd BufReadPost *.rs setlocal filetype=rust
augroup END

" Always draw sign column. Prevent buffer moving when adding/deleting sign.
set signcolumn=yes

let g:LanguageClient_serverCommands = {
    \ 'rust': ['rust-analyzer'],
    \ }
let $RUST_BACKTRACE = 1
let g:LanguageClient_loggingLevel = 'INFO'
let g:LanguageClient_virtualTextPrefix = ''
let g:LanguageClient_loggingFile =  expand('~/.local/share/nvim/LanguageClient.log')
let g:LanguageClient_serverStderr = expand('~/.local/share/nvim/LanguageServer.log')

• Language server link and version: https://github.com/rust-analyzer/rust-analyzer/releases/download/2020-05-25/rust-analyzer-linux

To Reproduce

Steps to reproduce the behavior:

• cargo new temp
• nvim -u min-vimrc.vim temp/src/main.rs
• :call LanguageClient_textDocument_codeAction()

Current behavior

Code actions shown on 2020-05-18 but not on 2020-05-25 or nightly.

Expected behavior

Code actions shown.

Screenshots

Additional context

Log files for calling code action on 2020-05-18 and 2020-05-25:
LanguageClient-old.log
LanguageClient-new.log

[martskins]

Possibly related to the changes introduced here: rust-lang/rust-analyzer#4494

[YaLTeR]

I'm looking into this, I think it's just that LanguageClient-neovim doesn't advertise code action support.

[TheZoq2]

I think I tested this fix by switching my branch in vim-plug to dev and rerunning plugin update. I sitll experience the same issue (0/0) actions supported. Checking out R-A 2020-05-18 works fine

[martskins]

@TheZoq2 I assume you have "bash ./install.sh" as a post install step there? Try changing "bash ./install.sh" to "make release", so it rebuilds from source instead of downloading the latest released binary (which is behind dev).

[TheZoq2]

Thanks. Adding make release to the vimrc didn't work, but going into the plugin folder and manually running it seems to have done the trick :)

[martskins]

@YaLTeR I think your fix for this is already in next, so I'll close this one, but feel free to re-open if this is still an issue.