WithoutOverlapping () does not work on Laravel schedule

Question

$schedule->call(function () 
        {
            error_log("Line Schedule 1:Start");
            //Send Email
            error_log("Line Schedule 1:End");

        })->everyFiveMinutes()->name('event_name:1')->withoutOverlapping();


        $schedule->call(function () 
        {
          error_log("Line Schedule 2:Start");
           //Send Email
          error_log("Line Schedule 2:End");
        })->everyFiveMinutes()->name('event_name:2')->withoutOverlapping();
        $schedule->call(function () 
        {
          error_log("Line Schedule 3:Start");
              //Send Email
          error_log("Line Schedule 3:End");
        })->everyFiveMinutes()->name('event_name:3')->withoutOverlapping();

I run these stormtroopers with the php artisan schedule: run command, and I run many instances in parallel. and my log file says schulder 2 starts a second time, even its previous instance has not completed it yet.

[01-Jan-2016 11:30:08 UTC] Line Schedule 1:Start
[01-Jan-2016 11:30:11 UTC] Line Schedule 2:Start
[01-Jan-2016 11:30:13 UTC] Line Schedule 3:Start
[01-Jan-2016 11:30:15 UTC] Line Schedule 1:End
[01-Jan-2016 11:30:15 UTC] Line Schedule 2:Start
[01-Jan-2016 11:30:17 UTC] Line Schedule 2:End
[01-Jan-2016 11:30:17 UTC] Line Schedule 3:Start
[01-Jan-2016 11:30:19 UTC] Line Schedule 3:End
[01-Jan-2016 11:30:21 UTC] Line Schedule 2:End
[01-Jan-2016 11:30:21 UTC] Line Schedule 3:Start
[01-Jan-2016 11:30:22 UTC] Line Schedule 3:End
[01-Jan-2016 11:30:25 UTC] Line Schedule 3:End

Answer 1

Just name your task by calling name () and combine the methods that determine when your task should be launched.

$schedule->call(function () {
  //Some Code
})->everyFiveMinutes()
->name('some_name')
->withoutOverlapping();

Anonymous functions require a name to prevent overlapping .