Function build_recorder 

pub fn build_recorder() -> Result<(PrometheusRecorder, PrometheusHandle), BuildError>

Builds a configured PrometheusRecorder and its PrometheusHandle without installing it globally.

Use this in tests together with metrics::with_local_recorder to keep test runs isolated from one another and from the global recorder.

Errors

Returns BuildError when bucket values are empty or otherwise invalid.