cargo check failed

[yann-ybi]

Type: Bug

Since today I keep getting an error when I save from the rust analyzer: "cargo check failed Check the server log for additional information"

It seems that the rust analyzer runs cargo check on my directory folder that doesn't have cargo.toml like locality instead of the folders inside that have it like array2 file or ppmtrans ...

Here is the error

[ERROR flycheck] Flycheck failed to run the following command: "cargo" "check" "--workspace" "--message-format=json" "--all-targets"

[ERROR rust_analyzer::lsp_utils] cargo check failed

Cargo watcher failed, the command produced no valid metadata (exit code: ExitStatus(unix_wait_status(25856))):

error: could not find Cargo.toml in /Users/librarypatron/locality or any parent directory

Extension version: 0.3.1258
VS Code version: Code 1.72.2 (Universal) (d045a5eda657f4d7b676dedbfa7aab8207f8a075, 2022-10-12T22:16:30.254Z)
OS version: Darwin x64 21.6.0
Modes:
Sandboxed: No

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-7360U CPU @ 2.30GHz (4 x 2300)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: disabled_off direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled metal: disabled_off multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_renderer: enabled_on video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: disabled_off
Load (avg)	4, 4, 3
Memory (System)	8.00GB (0.25GB free)
Process Argv	--crash-reporter-id 6d46b371-7dc6-41fc-89d8-01f75f4f4a74
Screen Reader	no
VM	0%

A/B Experiments

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vscod805:30301674
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bridge0708:30335490
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cmake_vspar411:30581797
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pythonvs932:30410667
cppdebug:30492333
vsclangdf:30486550
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azure-dev_surveyone:30548225
i497e931:30553904
pyindex848:30577860
nodejswelcome1:30587005
fc301958:30573243

[trickster]

I had the same issue.

Running these solved the issue for me.

rustup component add rustfmt
rustup component add clippy

[Veykril]

Can you check if the latest pre-release works? The fix for this unfortunately didn't make it into the stable release

[jbwebb]

The pre-release version appears to work on Windows 10 after doing a window reload.
I saw the same issue with stable.

Extension version: v0.4.1259 (pre-release)

Version: 1.72.2 (user setup)
Commit: d045a5eda657f4d7b676dedbfa7aab8207f8a075
Date: 2022-10-12T22:15:18.074Z
Electron: 19.0.17
Chromium: 102.0.5005.167
Node.js: 16.14.2
V8: 10.2.154.15-electron.0
OS: Windows_NT x64 10.0.19044
Sandboxed: No

[ultimaweapon]

Same problem on Arch Linux. Was tried @trickster solution and it does not work.

[msvi]

Stumbled across the same issue today. The pre-release version works fine though.

[ryanroe]

@Veykril
switch to pre-release version only makes the error gone, but rust-analyzer still doesn't work. all features includes inlay hints / code completion / goto xxx is unavailable

tested under Windows 11
ra version: v0.3.1258
vscode version:

Version: 1.72.2 (user setup)
Commit: d045a5eda657f4d7b676dedbfa7aab8207f8a075
Date: 2022-10-12T22:15:18.074Z
Electron: 19.0.17
Chromium: 102.0.5005.167
Node.js: 16.14.2
V8: 10.2.154.15-electron.0
OS: Windows_NT x64 10.0.22623
Sandboxed: No

open demo folder with the following structure

this works

- demo
  - Cargo.toml

and this not

- demo
  - other-rust-app
    - Cargo.toml 

[Veykril]

Well, that sounds like a different issue then

[Luxbit]

The pre-release version fixes this issue.

@ryanroe
When your Cargo.toml is not located in the project root, you need to explicitly declare it in rust-analyzer.linkedProjects

[ryanroe]

@Luxbit thanks, but previous version just works with default settings.

is rust-analyzer.linkedProjects a newly added option in the pre-release ?

[Luxbit]

@ryanroe no, I have been using this parameter for months

[yann-ybi]

@ryanroe
how do I explicitly do that rust-analyzer.linkedProjects

[yann-ybi]

@Luxbit

How do I explicitly declare it. can you give me some detailed steps please ?

[Luxbit]

@yann-ybi
In VSCode, you simply put it in /.vscode/settings.json in your project root

{
  "rust-analyzer.linkedProjects": [
    "some/path/to/Cargo.toml"
  ]
}  

[tylerthecoder]

Just ran into this issue on arch and vscode. Updating the rust-analyzer extension to Pre-Release fixed it for me!

[tylerthecoder]

Yeah I just opened the extension in vs code and clicked the "switch to pre-release" button.