Function calculate_estimates 

pub fn calculate_estimates(
    msg_reader: MessageReader<'_, '_, AdjustTimetableEntry>,
    entries: Populated<'_, '_, (&TimetableEntry, &mut TimetableEntryCache)>,
    intervals: Populated<'_, '_, &Interval>,
    parents: Populated<'_, '_, &ChildOf>,
    schedules: Populated<'_, '_, &VehicleScheduleCache>,
    graph: Res<'_, Graph>,
    stack: Local<'_, Vec<(Entity, Option<Duration>, Option<Duration>)>>,
    distances: Local<'_, Vec<Option<Distance>>>,
)