warning: address of stack memory associated with local variable
warning: address of stack memory associated with local variable

'output' returned [-Wreturn-stack-address]

return &output[0];

^~~~~~

1 warning generated.

Exception in thread Thread-3:

Traceback (most recent call last):

File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner

self.run()

File "/usr/lib/python2.7/threading.py", line 754, in run

self.__target(*self.__args, **self.__kwargs)

File "/usr/lib/python2.7/multiprocessing/pool.py", line 389, in _handle_results

task = get()

TypeError: ('__init__() takes at least 3 arguments (1 given)', <class 'subprocess.CalledProcessError'>, ())

I've come to here. And no progress :( :( :( how to fix this? :( 