src/Subscriber/Psr3Logger.php
public function start(Tick $tick)
    {
        $this->logger->info($tick->getMessage() ?: 'Started', $tick->getReport()->toArray());
    }
public function start(Tick $tick)
    {
        $this->logger->info($tick->getMessage() ?: 'Started', $tick->getReport()->toArray());
    }
Start callback

@param Tick $tick