pub fn start(plan: &Plan) -> Result<Started, SpawnError>Expand description
Starts the run described by plan.
The payload is written to the hangar first, so that it exists whether or not the runner wants a path to it — a run whose instructions cannot be read afterwards is a run nobody can explain.
§Errors
Returns SpawnError when a declared variable is unset, the command is empty, or the process
cannot be started.