{"record":{"id":"d3f53706afd24b1f","repo":"xai-org/grok-build","slug":"serialize-fork-params-e","errorCode":null,"errorMessage":"serialize fork params: {e}","messagePattern":"serialize fork params: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/codegen/xai-grok-pager/src/headless.rs","lineNumber":633,"sourceCode":") -> anyhow::Result<OpenedSession> {\n    use crate::app::session_startup::{\n        effective_fork_new_cwd, ensure_session_id_available, fork_response_error,\n        fork_response_new_session_id, fork_session_params, parent_session_is_worktree,\n    };\n    let launch_cwd_str = launch_cwd.to_string_lossy().into_owned();\n    // Match interactive: child lands under the parent session cwd, not the launch cwd.\n    let new_cwd_str = effective_fork_new_cwd(&launch_cwd_str, parent_cwd);\n    let write_cwd = PathBuf::from(&new_cwd_str);\n    if let Some(nid) = new_id {\n        ensure_session_id_available(nid, &new_cwd_str)?;\n    }\n    let parent_is_worktree = parent_session_is_worktree(parent_id, &write_cwd);\n    let mut payload = fork_session_params(parent_id, &write_cwd, new_id, parent_is_worktree);\n    // Shared helper stamps `fork` for interactive `/fork`\n    // `-p` children must stay headless: the load path below never restamps\n    payload[\"sessionKind\"] = serde_json::Value::String(\"headless\".into());\n    let fork_params = serde_json::value::to_raw_value(&payload)\n        .map_err(|e| anyhow::anyhow!(\"serialize fork params: {e}\"))?;\n    let req = acp::ExtRequest::new(\"x.ai/session/fork\", fork_params.into());\n    let resp = acp_send(req, acp_tx).await?;\n    if let Some(err) = fork_response_error(resp.0.get()) {\n        anyhow::bail!(\"fork failed: {err}\");\n    }\n    let child = fork_response_new_session_id(resp.0.get())\n        .ok_or_else(|| anyhow::anyhow!(\"fork response missing newSessionId\"))?;\n    match open_session(acp_tx, &write_cwd, Some(&child), restore_code).await {\n        Ok(opened) => Ok(opened),\n        Err(e) => Err(anyhow::anyhow!(\n            \"fork succeeded as {child} but load failed: {e}\"\n        )),\n    }\n}\n\n/// Apply `-m` / effort after session open.\n/// Effort is soft-ignored on a non-supporting model (still applying `-m`) but hard-fails on a genuinely unknown token.\nasync fn apply_headless_model_and_effort(","sourceCodeStart":615,"sourceCodeEnd":651,"githubUrl":"https://github.com/xai-org/grok-build/blob/bc7f02eddd3d84085849dc19ed216f11c23b0571/crates/codegen/xai-grok-pager/src/headless.rs#L615-L651","documentation":"Error \"serialize fork params: {e}\" thrown in xai-org/grok-build.","triggerScenarios":"Thrown at crates/codegen/xai-grok-pager/src/headless.rs:633 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"}