45 * * * * www-data php /var/www/console cmd:dispatch --env=prod 2>&1 > /var/log/cron/cmd_dispatch.log

45 * * * * www-data php /var/www/console cmd:dispatch --env=prod 2>&1 > /var/log/cron/cmd_dispatch.log; &> /dev/null

... >/var/log/cron/cmd_dispatch.log 2>&1