{"record":{"id":"6778bae68834923d","repo":"xai-org/grok-build","slug":"external-auth-provider-command-io-error-e","errorCode":null,"errorMessage":"external auth provider `{command}` IO error: {e}","messagePattern":"external auth provider `(.+?)` IO error: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"crates/codegen/xai-grok-shell/src/auth/flow.rs","lineNumber":241,"sourceCode":"                        cb(trimmed);\n                    }\n                    Err(e) => {\n                        tracing::warn!(error = %e, \"auth: error reading provider stderr\");\n                        break;\n                    }\n                }\n            }\n        }))\n    } else {\n        None\n    };\n    let output = tokio::time::timeout(\n        std::time::Duration::from_secs(300),\n        child.wait_with_output(),\n    )\n    .await\n    .map_err(|_| anyhow::anyhow!(\"external auth provider `{command}` timed out after 300s\"))?\n    .map_err(|e| anyhow::anyhow!(\"external auth provider `{command}` IO error: {e}\"))?;\n    if let Some(task) = stderr_task {\n        let _ = task.await;\n    }\n    let mut auth = parse_output(&output)\n        .map_err(|e| anyhow::anyhow!(\"external auth provider `{command}`: {e}\"))?;\n    let principal_policy =\n        crate::auth::oidc::login_principal_policy(auth_manager.grok_com_config());\n    crate::auth::oidc::enforce_login_principal(\n        principal_policy.as_ref(),\n        crate::auth::oidc::peek_access_token_principal_id(&auth.key).as_deref(),\n    )?;\n    match (over_stale_credential, auth_manager.current_or_expired()) {\n        (true, Some(prev)) => auth.carry_user_profile_from(&prev),\n        _ => auth_manager.enrich_auth_inline(&mut auth).await,\n    }\n    let auth = auth_manager\n        .update(auth)\n        .await","sourceCodeStart":223,"sourceCodeEnd":259,"githubUrl":"https://github.com/xai-org/grok-build/blob/bc7f02eddd3d84085849dc19ed216f11c23b0571/crates/codegen/xai-grok-shell/src/auth/flow.rs#L223-L259","documentation":"wait_with_output() failed while reading the provider's stdout/stderr or waiting for exit; the io::Error is wrapped with this message. Spawn succeeded but the runtime failed to collect output — commonly the child was killed by a signal or an IO pipe error occurred.","triggerScenarios":"The provider process is killed (OOM, user signal, external timeout wrapper) while tokio waits; the process writes then dies in a way that yields an IO error on the piped stdout/stderr handles.","commonSituations":"OOM killer terminating the provider; an outer script sending SIGKILL to a process group; provider binary crashing after being spawned; sandboxed environments blocking pipe usage.","solutions":["Check system logs (dmesg/journalctl) for OOM kills or signals hitting the provider process.","Run the provider command standalone and observe its exit behavior; fix the provider crash.","Remove outer wrappers (timeout, process-group killers) that SIGKILL the provider mid-run.","Retry the login; if transient, add resilience in the provider rather than the caller."],"exampleFix":null,"handlingStrategy":"retry","validationCode":"// preflight: run the provider briefly and confirm it survives\nprovider_cmd --version || echo 'provider binary crashes or is misbuilt'","typeGuard":null,"tryCatchPattern":"match run_auth_flow(...).await {\n    Err(e) if e.to_string().contains(\"IO error\") => {\n        eprintln!(\"Provider died mid-run (signal/OOM?). Check dmesg and retry\");\n    }\n    other => other?,\n}","preventionTips":["Don't SIGKILL the provider with outer timeout wrappers","Watch for OOM kills when the provider allocates heavily","Test the provider binary standalone after each rebuild","Avoid sandbox profiles that block piped stdio"],"tags":["auth","process","io-error","external-provider"],"backgroundTag":"process-io-error","analyzedSha":"bc7f02eddd3d84085849dc19ed216f11c23b0571","analyzedAt":"2026-08-31T04:59:42.031Z","schemaVersion":2},"datasetVersion":"2026-08-31T09:17:48.483Z"}