xai-org/grok-build · error

modified files scan thread panicked

Error message

modified files scan thread panicked

What it means

Error "modified files scan thread panicked" thrown in xai-org/grok-build.

Source

Thrown at crates/codegen/xai-fast-worktree/src/worktree/execute.rs:1308

    // it on any finalize/checkout/commit failure.
    let guard = PartialWorktreeGuard::new(&dest);

    // Destructure before the finalize match consumes file_metadata.
    let copy_stats = copy_result.stats;
    let copied_paths = copy_result.copied_paths;
    let file_metadata = copy_result.file_metadata;

    // Phase 4: Finalize index.
    // In standalone mode, the index is already at dest/.git/index (from the .git/ CoW).
    // We just need to update stat cache entries so git status is fast.
    let finalize_start = std::time::Instant::now();
    match working_tree {
        WorkingTreeMode::PreserveWorkingTree => {
            // Join the modified-files scan (it ran in parallel with the copy).
            let modified_files_in_source = if let Some(handle) = modified_scan_handle {
                let result = handle
                    .join()
                    .map_err(|_| anyhow::anyhow!("modified files scan thread panicked"))?
                    .context("modified files scan failed")?;
                dirty_files_report = Some(result.report);
                Arc::new(result.paths)
            } else {
                Arc::new(dashmap::DashSet::new())
            };

            // Update index stat cache so `git status` is instant.
            let clean = collect_clean_metadata(file_metadata, &modified_files_in_source);
            git::update_index_stats(&dest, &clean)?;
        }
        WorkingTreeMode::CleanTracked => {
            // `git reset --hard` rebuilds the index from HEAD with correct
            // stat caches. No need to update stats first — reset overwrites
            // the entire index unconditionally.
            drop(file_metadata);
            git::git_reset_hard_command(&dest, None)?;
        }

View on GitHub (pinned to bc7f02eddd)

When it happens

Trigger: Thrown at crates/codegen/xai-fast-worktree/src/worktree/execute.rs:1308 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of xai-org/grok-build@bc7f02eddd (2026-08-31). Data as JSON: /api/errors/b83d6d707f82b9d6. Report an issue: GitHub.