Function run_observers_and_save_state 

pub(crate) fn run_observers_and_save_state<E, EM, OF, Z>(
    executor: &mut E,
    state: &mut E::State,
    input: &<E::State as UsesInput>::Input,
    fuzzer: &mut Z,
    event_mgr: &mut EM,
    exitkind: ExitKind,
)
where
    E: HasObservers,
    EM: EventFirer<State = E::State> + EventRestarter<State = E::State>,
    OF: Feedback<E::State>,
    E::State: HasExecutions + HasSolutions + HasCorpus,
    Z: HasObjective<Objective = OF, State = E::State>,

Save state if it is an objective