Function capture 

pub fn capture(
    component: Component,
    command: &mut Command,
    scope: &Operation,
    policy: QueryPolicy,
    on_failure: impl FnOnce(),
) -> Result<Output, Error>

Capture one owned subprocess, invoking native cleanup before the final kill/reap on failure.

Errors

Returns process, stream-limit, timeout or cancellation failures; the exact child is reaped.