Vscode-rust: Unknown RLS configuration: `mode` ,`rustup`

Created on 12 Apr 2019 · 4Comments · Source: rust-lang/vscode-rust

Observed behavior:

Popup of "Unknown RLS configuration: mode ,rustup"
Screen Shot 2019-04-12 at 8 53 20 AM

Build indicator keeps spinning:
Screen Shot 2019-04-12 at 8 53 29 AM

vscode.log

Steps to reproduce

open non-empty rust project in vs code with rls-vscode installed.

Environment

VS Code Version 1.33.1 (1.33.1)
macOS 10.14.4 (18E226)
rustc
- stable-x86_64-apple-darwin (default)
- rustc 1.34.0 (91856ed52 2019-04-10)

$ rustup component list --toolchain stable --installed
cargo-x86_64-apple-darwin
rls-x86_64-apple-darwin
rust-analysis-x86_64-apple-darwin
rust-docs-x86_64-apple-darwin
rust-src
rust-std-x86_64-apple-darwin
rustc-x86_64-apple-darwin

Expected behavior:

rls-vscode extension shows no error
rls-vscode finishes build

Source

japert

👍12

Most helpful comment

I believe these options are for another extension - https://github.com/editor-rs/vscode-rust. I wouldn't recommend running both as they may spawn two instances of RLS or do overwrite each other tasks or similar. I believe that extension is quasi-deprecated at this point and this should be used instead, so in this case it's safe to remove rust.mode and rust.rustup entries from settings.json.

Xanewok on 12 Apr 2019

👍14

All 4 comments

I had this as well and had to remove "rust.mode": "legacy" from my user settings (editing the json by hand, as opposed to using the GUI). It appears they've disabled legacy mode. I can't remember why I turned it on in the first place, so that's all right.

dusty-phillips on 12 Apr 2019

👍5

Xanewok on 12 Apr 2019

👍14

You are right I had these orphan settings my user settings!
However the build indicator keeps spinning.
Might be related to https://github.com/rust-lang/rls-vscode/issues/492

japert on 12 Apr 2019

you need to delete the rust.mode and rust.rustup in the setting.json