Function run_with_output_backend 

pub fn run_with_output_backend(
    command: Command,
    config: DetConfig,
    print_summary: bool,
    print_summary_to_json_file: &Option<PathBuf>,
    backend: Backend,
) -> Result<Output, Error>

Variant of run_with_backend that also captures stdout/stderr.

On ptrace it needs no particular stack from the calling thread; see run.