fn bench_spec_single(
rt: &Runtime,
desc: &SpecDescriptor,
rotation_script: &str,
data_dir: &str,
parameters: RunParameters,
) -> Result<SpecBenchResult>fn bench_spec_single(
rt: &Runtime,
desc: &SpecDescriptor,
rotation_script: &str,
data_dir: &str,
parameters: RunParameters,
) -> Result<SpecBenchResult>