Just started learning Rust today and got Rust installed, got the hello world example compiled and running. I installed rust-analyzer
and CodeLLDB
extensions in VSCode. Enable the debug.allowBreakpointsEverywhere
settings to VSCode to be true. Setup a debug configuration in VSCode.
However I keep getting errors from rust-analyzer
when I run the debugger…
2024-10-06T22:16:04.808655Z ERROR FetchWorkspaceError: rust-analyzer failed to load workspace: Failed to load the project at /home/john/Documents/Snippets/Rust/Cargo.toml: Failed to read Cargo metadata from Cargo.toml file /home/john/Documents/Snippets/Rust/Cargo.toml, Some(Version { major: 1, minor: 81, patch: 0 }): Failed to run `cd "/home/john/Documents/Snippets/Rust" && RUSTUP_TOOLCHAIN="/home/john/.rustup/toolchains/stable-x86_64-unknown-linux-gnu" "/home/john/.cargo/bin/cargo" "metadata" "--format-version" "1" "--manifest-path" "/home/john/Documents/Snippets/Rust/Cargo.toml" "--filter-platform" "x86_64-unknown-linux-gnu"`: `cargo metadata` exited with an error: error: failed to parse manifest at `/home/john/Documents/Snippets/Rust/Cargo.toml`
Caused by:
no targets specified in the manifest
either src/lib.rs, src/main.rs, a [lib] section, or [[bin]] section must be present
I not sure how to fix this.
I would like to get the VSCode debugger to work for launch debugging, attach debugging and launch and attach debugging for rust running inside a docker container. This will be a good setup for getting started I believe.
This is my VSCode debugger configuration…
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"type": "lldb",
"request": "launch",
"name": "Debug",
"program": "${workspaceFolder}/hello-world",
"args": [],
"cwd": "${workspaceFolder}"
}
]
}
Any help and advice will be most appreciated.
My advice is that you debug via tests. If you install Rust-analyzer (you probably already have) then any tests you add have a little “Run test” and “Debug test” button next to them that you can just click. It magically works without having to faff around with JSON files.
As for your current setup, as other said you have an issue in
Cargo.toml
which is unrelated to debugging, and the target binary is intarget/debug
, not in the workspace root.