openai/codex · error · std::io::Error

configured span attribute key must not be empty

Error message

configured span attribute key must not be empty

What it means

Error "configured span attribute key must not be empty" thrown in openai/codex.

Source

Thrown at codex-rs/otel/src/config.rs:41

            OtelExporter::OtlpHttp {
                endpoint: STATSIG_OTLP_HTTP_ENDPOINT.to_string(),
                headers: HashMap::from([(
                    STATSIG_API_KEY_HEADER.to_string(),
                    STATSIG_API_KEY.to_string(),
                )]),
                protocol: OtelHttpProtocol::Json,
                tls: None,
            }
        }
        _ => exporter.clone(),
    }
}

/// Validates configured span attributes before they are attached to exported spans.
pub fn validate_span_attributes(attributes: &BTreeMap<String, String>) -> std::io::Result<()> {
    if attributes.keys().any(String::is_empty) {
        return Err(std::io::Error::new(
            std::io::ErrorKind::InvalidInput,
            "configured span attribute key must not be empty",
        ));
    }

    Ok(())
}

#[derive(Clone, Debug)]
pub struct OtelSettings {
    pub environment: String,
    pub service_name: String,
    pub service_version: String,
    pub codex_home: PathBuf,
    pub exporter: OtelExporter,
    pub trace_exporter: OtelExporter,
    pub metrics_exporter: OtelExporter,
    pub runtime_metrics: bool,

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/otel/src/config.rs:41 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/cb394d7ec5a20c13. Report an issue: GitHub.