v0.2.207 not working in VSCode 1.46.0

[krooq]

I've installed the latest rust-analyzer release (v0.2.207) in VSCode (1.46.0) and it doesn't seem to work at all.
VSCode says its installed and enabled via the extensions tab but no commands are appear when I search with ctrl+shift+P, no analysis is performed, no option for rust analyzer in the output tab, no prompt to install language server, it's just as if it isn't there.

I tried

• switching workspaces/projects
• restarting VSCode
• reinstalling rust-analyzer
• uninstalling all other extensions

I reinstalled the previous rust analyzer version v0.2.199 and it works fine.

My VSCode installation and OS version

Version: 1.46.0
Commit: a5d1cc28bb5da32ec67e86cc50f84c67cc690321
Date: 2020-06-10T09:03:20.462Z
Electron: 7.3.1
Chrome: 78.0.3904.130
Node.js: 12.8.1
V8: 7.8.279.23-electron.0
OS: Windows_NT x64 10.0.19041

[Veetaha]

Could you please share us the log output of the extension? It is under Help -> Toggle Developer Tools -> Console?

[notheotherben]

I'm seeing the following error in the VSCode Console under similar conditions.

Activating extension 'matklad.rust-analyzer' failed: EBUSY: resource busy or locked, open '%AppData%\Code\User\globalStorage\matklad.rust-analyzer\rust-analyzer-windows.exe'.

Note that %AppData% is expanded in the log entry, but I've redacted it here.

For what it's worth, it seems this was caused by having multiple VSCode instances running simultaneously and shutting down all other instances resolved my problem. Might be worth handling this EBUSY and warning users about it?

[bjorn3]

@spartan563 Try closing all vscode windows and ensuring that rust-analyzer-windows.exe is no longer running. Then you can open vscode again and the download should succeed.

[Veetaha]

Yeah, probably we should fix this issue or at least throw a proper error indication (this should have been done quite much earlier than right now I guess). I'll try to tackle this...

[krooq]

@Veetaha, this is the error I'm getting in the console

Activating extension 'matklad.rust-analyzer' failed: Cannot find module '<my-user-dir>\.vscode\extensions\matklad.rust-analyzer-0.2.207\out\src\main'
Require stack:
- <my-vscode-install>\resources\app\out\vs\loader.js
- <my-vscode-install>\resources\app\out\bootstrap-amd.js
- <my-vscode-install>\resources\app\out\bootstrap-fork.js.

VSCode 1.46.1 is out now, I'll try that version and report back.

EDIT: 1.46.1 produces the same error

It does appear that there is no \out\src\main directory in the extension install folder

[Veetaha]

@krooq that's very weird, try the following strictly in order:

• Click Uninstall rust-analyzer extension in vscode
• Close vscode
• Remove <my-user-dir>\.vscode\extensions\matklad.rust-analyzer-0.2.207
• Install rust-analyzer once again

[krooq]

Ok that worked! cool!
Must have been a messed up install of the RLS which windows/vscode cached somewhere.
Thanks a bunch!

I'll close this ticket as I think this is just an odd case and probably a dodgy Australian internet connection thing.