Couldn't start client Rust Language Server

[byteshiva]

I'm using rust 1.39.0 and installed it using rust version manager.

Now in vscode, I see the below error. Do I need to specific the rust path since the rust compiler or binary localtion would be different when installed using rust version manager.

Error
Couldn't start client Rust Language Server

[lihz6]

This is somethong to with /bin/sh and the rustup can't be found in the $PATH.

[lihz6]

Command failed: rustup toolchain list /bin/sh: rustup: command not found

[eratio08]

I got the same problem on macOS. I checked which rustup using $ sh, $ bash and $ zsh. Rustup is always found under /Users/user/.cargo/bin/rustup. So it does not seem to be a $PATH problem. rls is also found /Users/user/.cargo/bin/rls.

UPDATE:
I solved this problem by explicitly setting "rust-client.rustupPath": "/Users/user/.cargo/bin/rustup".

[NathanielRN]

Thanks to @eratio08 's comment, I also fixed this issue by going to ~/Library/Application Support/Code/User/settings.json and explicitly adding "rust-client.rlsPath": "/Users/NathanielRuiz/.cargo/bin/rls".

(You can also do this in Ctrl + Shift + P -> Preferences: Open User Settings)

[moloch--]

I also had to add the ~/.cargo/bin to my path, in addition to specifying the rust-client.rlsPath in the config, with rust v1.59