Unknown RLS configuration: mode ,rustup

[japert]

Observed behavior:

Popup of "Unknown RLS configuration: mode ,rustup"

Build indicator keeps spinning:

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

[dusty-phillips]

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.

[Xanewok]

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.

[japert]

You are right I had these orphan settings my user settings!
However the build indicator keeps spinning.
Might be related to #492

[w614561012]

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