{"record":{"id":"b83d6d707f82b9d6","repo":"xai-org/grok-build","slug":"modified-files-scan-thread-panicked","errorCode":null,"errorMessage":"modified files scan thread panicked","messagePattern":"modified files scan thread panicked","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/codegen/xai-fast-worktree/src/worktree/execute.rs","lineNumber":1308,"sourceCode":"    // it on any finalize/checkout/commit failure.\n    let guard = PartialWorktreeGuard::new(&dest);\n\n    // Destructure before the finalize match consumes file_metadata.\n    let copy_stats = copy_result.stats;\n    let copied_paths = copy_result.copied_paths;\n    let file_metadata = copy_result.file_metadata;\n\n    // Phase 4: Finalize index.\n    // In standalone mode, the index is already at dest/.git/index (from the .git/ CoW).\n    // We just need to update stat cache entries so git status is fast.\n    let finalize_start = std::time::Instant::now();\n    match working_tree {\n        WorkingTreeMode::PreserveWorkingTree => {\n            // Join the modified-files scan (it ran in parallel with the copy).\n            let modified_files_in_source = if let Some(handle) = modified_scan_handle {\n                let result = handle\n                    .join()\n                    .map_err(|_| anyhow::anyhow!(\"modified files scan thread panicked\"))?\n                    .context(\"modified files scan failed\")?;\n                dirty_files_report = Some(result.report);\n                Arc::new(result.paths)\n            } else {\n                Arc::new(dashmap::DashSet::new())\n            };\n\n            // Update index stat cache so `git status` is instant.\n            let clean = collect_clean_metadata(file_metadata, &modified_files_in_source);\n            git::update_index_stats(&dest, &clean)?;\n        }\n        WorkingTreeMode::CleanTracked => {\n            // `git reset --hard` rebuilds the index from HEAD with correct\n            // stat caches. No need to update stats first — reset overwrites\n            // the entire index unconditionally.\n            drop(file_metadata);\n            git::git_reset_hard_command(&dest, None)?;\n        }","sourceCodeStart":1290,"sourceCodeEnd":1326,"githubUrl":"https://github.com/xai-org/grok-build/blob/bc7f02eddd3d84085849dc19ed216f11c23b0571/crates/codegen/xai-fast-worktree/src/worktree/execute.rs#L1290-L1326","documentation":"Error \"modified files scan thread panicked\" thrown in xai-org/grok-build.","triggerScenarios":"Thrown at crates/codegen/xai-fast-worktree/src/worktree/execute.rs:1308 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"bc7f02eddd3d84085849dc19ed216f11c23b0571","analyzedAt":"2026-08-31T04:59:42.031Z","schemaVersion":2},"datasetVersion":"2026-08-31T09:17:48.483Z"}