Rust Analyzer Panic

[rrakea]

Summary

Rust analyzer panics on startup, during fetch_native_diagnostics

Reproduction Steps

Launch helix in rust project and edit any file

My helix language.toml is attached (renamed because github doesnt want toml files??)

languages.log

Helix log

~/.cache/helix/helix.log

Without backtrace and logging:

2025-05-18T13:38:25.163 helix_lsp::transport [ERROR] rust-analyzer err <- "Panic context:\n"
2025-05-18T13:38:25.163 helix_lsp::transport [ERROR] rust-analyzer err <- "> fetch_native_diagnostics\n"
2025-05-18T13:38:25.163 helix_lsp::transport [ERROR] rust-analyzer err <- "\n"
2025-05-18T13:38:25.163 helix_lsp::transport [ERROR] rust-analyzer err <- "\n"
2025-05-18T13:38:25.163 helix_lsp::transport [ERROR] rust-analyzer err <- "thread 'Worker' panicked at src/tools/rust-analyzer/crates/ide-diagnostics/src/lib.rs:382:65:\n"
2025-05-18T13:38:25.163 helix_lsp::transport [ERROR] rust-analyzer err <- "called Option::unwrap() on a None value\n"
2025-05-18T13:38:25.163 helix_lsp::transport [ERROR] rust-analyzer err <- "stack backtrace:\n"
2025-05-18T13:38:25.170 helix_lsp::transport [ERROR] rust-analyzer err <- " 0: __rustc::rust_begin_unwind\n"
2025-05-18T13:38:25.170 helix_lsp::transport [ERROR] rust-analyzer err <- " 1: core::panicking::panic_fmt\n"
2025-05-18T13:38:25.170 helix_lsp::transport [ERROR] rust-analyzer err <- " 2: core::panicking::panic\n"
2025-05-18T13:38:25.170 helix_lsp::transport [ERROR] rust-analyzer err <- " 3: core::option::unwrap_failed\n"
2025-05-18T13:38:25.170 helix_lsp::transport [ERROR] rust-analyzer err <- " 4: ide_diagnostics::semantic_diagnostics\n"
2025-05-18T13:38:25.170 helix_lsp::transport [ERROR] rust-analyzer err <- " 5: ide::Analysis::semantic_diagnostics\n"
2025-05-18T13:38:25.170 helix_lsp::transport [ERROR] rust-analyzer err <- " 6: <core::iter::adapters::filter_map::FilterMap<core::iter::adapters::copied::Copied<core::slice::iter::Itervfs::FileId>, rust_analyzer::diagnostics::fetch_native_diagnostics::{closure#0}> as core::iter::traits::iterator::Iterator>::next\n"
2025-05-18T13:38:25.170 helix_lsp::transport [ERROR] rust-analyzer err <- " 7: rust_analyzer::diagnostics::fetch_native_diagnostics\n"
2025-05-18T13:38:25.170 helix_lsp::transport [ERROR] rust-analyzer err <- " 8: <stdx::thread::pool::Pool::spawn<<rust_analyzer::task_pool::TaskPool<rust_analyzer::main_loop::Task>>::spawn_with_sender<<rust_analyzer::global_state::GlobalState>::update_diagnostics::{closure#3}>::{closure#0}>::{closure#0} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}\n"
2025-05-18T13:38:25.170 helix_lsp::transport [ERROR] rust-analyzer err <- "note: Some details are omitted, run with RUST_BACKTRACE=full for a verbose backtrace.\n"
2025-05-18T13:38:27.537 helix_lsp::transport [ERROR] rust-analyzer <- ServerError(-32801): content modified
2025-05-18T13:38:27.537 helix_term::handlers::signature_help [ERROR] signature help request failed: protocol error: ServerError(-32801): content modified

With logging attached

rust_issue.log

Platform

Arch Linux

Terminal Emulator

kitty 0.42.0

Installation Method

AUR

Helix Version

helix 25.01.1

[rrakea]

I dont know what happend, but it fixed itself??
I didnt change any configs etc