Function graphile_worker_crontab_runner::cron_main

pub async fn cron_main<'e>(
    executor: impl PgExecutor<'e> + Clone,
    escaped_schema: &str,
    crontabs: &[Crontab],
    use_local_time: bool,
    shutdown_signal: ShutdownSignal
) -> Result<(), ScheduleCronJobError>