call to $this->failed() does not work in the command structure

[kruisdraad]

In a failed attempt to parse events, the call to $this->failed() does not work in the command structure:

[2015-07-24 22:10:05] local.ERROR: exception 'ErrorException' with message 'call_user_func() expects parameter 1 to be a valid callback, cannot access protected method AbuseIO\Commands\EmailProcess::failed()' in /opt/abuseio/vendor/laravel/framework/src/Illuminate/Queue/CallQueuedHandler.php:77
Stack trace:
#0 [internal function]: Illuminate\Foundation\Bootstrap\HandleExceptions->handleError(2, 'call_user_func(...', '/opt/abuseio/ve...', 77, Array)
#1 /opt/abuseio/vendor/laravel/framework/src/Illuminate/Queue/CallQueuedHandler.php(77): call_user_func(Array, Object(AbuseIO\Commands\EmailProcess))
#2 /opt/abuseio/vendor/laravel/framework/src/Illuminate/Queue/Jobs/Job.php(206): Illuminate\Queue\CallQueuedHandler->failed(Array)
#3 /opt/abuseio/vendor/laravel/framework/src/Illuminate/Queue/Worker.php(243): Illuminate\Queue\Jobs\Job->failed()
#4 /opt/abuseio/vendor/laravel/framework/src/Illuminate/Queue/Worker.php(201): Illuminate\Queue\Worker->logFailedJob('beanstalkd', Object(Illuminate\Queue\Jobs\BeanstalkdJob))
#5 /opt/abuseio/vendor/laravel/framework/src/Illuminate/Queue/Worker.php(159): Illuminate\Queue\Worker->process('beanstalkd', Object(Illuminate\Queue\Jobs\BeanstalkdJob), '1', '0')
#6 /opt/abuseio/vendor/laravel/framework/src/Illuminate/Queue/Console/WorkCommand.php(109): Illuminate\Queue\Worker->pop(NULL, 'emails', '0', '3', '1')
#7 /opt/abuseio/vendor/laravel/framework/src/Illuminate/Queue/Console/WorkCommand.php(71): Illuminate\Queue\Console\WorkCommand->runWorker(NULL, 'emails', '0', '128', false)
#8 [internal function]: Illuminate\Queue\Console\WorkCommand->fire()
#9 /opt/abuseio/vendor/laravel/framework/src/Illuminate/Container/Container.php(502): call_user_func_array(Array, Array)
#10 /opt/abuseio/vendor/laravel/framework/src/Illuminate/Console/Command.php(149): Illuminate\Container\Container->call(Array)
#11 /opt/abuseio/vendor/symfony/console/Command/Command.php(259): Illuminate\Console\Command->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#12 /opt/abuseio/vendor/laravel/framework/src/Illuminate/Console/Command.php(135): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#13 /opt/abuseio/vendor/symfony/console/Application.php(878): Illuminate\Console\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#14 /opt/abuseio/vendor/symfony/console/Application.php(195): Symfony\Component\Console\Application->doRunCommand(Object(Illuminate\Queue\Console\WorkCommand), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#15 /opt/abuseio/vendor/symfony/console/Application.php(126): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#16 /opt/abuseio/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php(100): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#17 /opt/abuseio/artisan(36): Illuminate\Foundation\Console\Kernel->handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#18 {main}

[kruisdraad]

resolved by fixing coding error. This->exception was called twice before there was no return in the calling object. Using return $this->exception works in main and debug modes.