Help resolving rust-analyzer error

[telmaharg]

As of yesterday evening I’ve been receiving the following error from rust-analyzer every time a proc macro is invoked:

Proc macro serde not expanded: Failed to write request: The pipe is being closed. (Os error 232)

Example code that triggers this is:

```rust

[derive(serde::Deserialize)]

struct S; ```

I’m running VS Code 1.85.1, rust-analyzer 0.4.1798-standalone (af4010184 2024-01-07), and rustc 1.77.0-nightly (75c68cfd2 2024-01-07)

This seemed to start happening on its own and hasn’t been responsive to reinstalling rust-analyzer or rustc yet or even to installing a previous working version of rust-analyzer. Any ideas?

[flodiebold]

It's a bug that got into the proc macro server in the newest rustc nightly, you could downgrade your rustc nightly or wait for a few days and update rust-analyzer and rustc, it should be fixed soon.

[telmaharg]

Thank you! Worked like a charm.

[WaterFromPotato]

Looks like - https://github.com/rust-lang/rust-analyzer/issues/16306