Monitoring is not detect if task crash with fatal exception

[xorik]

Hi. Thanks for your bundle, it is really useful.

But I found an issue:

If some task is crushed with fatal exception (e.g. out of memory or some function returns incrorrect type in php 7+), in this case last result will not changed and task will stay locked.

E.g. if during scheduler:execute some task is crashed:

[Symfony\Component\Debug\Exception\FatalThrowableError]
  Type error: Return value of SomeService::getUser() must be an instance of
   SomeUser, null returned

In this case the next scheduler:monitor will not show any problem.

[xorik]

As a workaround I suggest to run cron tasks in separate process, is it hard to implement?