Frequent OOMs in rust-analyzer

[Teapot4195]

I have the default vscode settings for rust-analyzer generated using a x.py setup for compiler development. Recently, rust-analyzer starts to frequently hang and then OOM itself.

This didn't happen in the past(~Jan 2025), I did observe high memory usage, but it has never hung and also exhausted all system memory. Looking at memory usage in htop shows rust-analyzer using upwards of 27GB of memory (including swap), which doesn't seem normal.

Of note is that this only happens when the project is opened, not after making code changes.

[fmease]

@rustbot transfer rust-analyzer

[ChayimFriedman2]

What is your version of rust-analyzer? Is your project public?

[Teapot4195]

The project is rust-lang/rust with all the submodules, and up to date to about 20 minutes before filing this bug.

[ChayimFriedman2]

What is your rust-analyzer version?

[TahaHachana]

In case this helps, I was having a similar issue with rust-analyzer installed from source on Sunday. Reinstalling today solved the problem

[Teapot4195]

Still happening on updated sources from today. Including freshly compiled rust-analyzer

[ShoyuVanilla]

I opened #20654 and I guess it might be able to fix this as well?

[ManuelPardoPose]

I have the exact same problem on multiple systems using NeoVim and Zed. Was fine until recently.

[ShoyuVanilla]

#20654 has been just merged but since current our release workflow is stopped for now (due to panics in some CI. We are working on it) it will not be released into unstable channel for a while. Could you check whether this still happens with build from the source?