radical mpi test leaves lots of threads:

parsl/tests/test_radical/test_mpi_funcs.py

...


            logger.error(f"BENC: end open fds: {end_fds} (vs start {start_fds}")
            logger.error(f"BENC: end threads: {threading.active_count()}")
    
>           assert threading.active_count() == 1, "test left threads running: " + repr(threading.enumerate())
E           AssertionError: test left threads running: [<_MainThread(MainThread, started 140532448974656)>, <Thread(Thread-18 (
_work), started daemon 140531866793664)>, <Thread(Thread-19 (_run_proxy), started daemon 140531858400960)>, <Thread(Thread-20 (
_monitor), started daemon 140531850008256)>, <Thread(Thread-21 (_work), started daemon 140531841615552)>, <Thread(Thread-23 (_w
atch), started daemon 140531229243072)>, <Thread(Thread-24 (_listener), started daemon 140531220850368)>, <Thread(Thread-25 (_l
istener), started daemon 140530985985728)>, <Thread(Thread-26 (_listener), started daemon 140530977593024)>, <Thread(Thread-27 
(_listener), started daemon 140530969200320)>, <Thread(Thread-28 (_listener), started daemon 140530960807616)>, <Thread(Thread-
29 (_listener), started daemon 140530952414912)>, <Thread(Thread-31 (_listener), started daemon 140530390398656)>, <Thread(Thre
ad-32 (_listener), started daemon 140530365220544)>, <Thread(Thread-33 (_listener), started daemon 140530113570496)>, <Thread(T
hread-35 (_listener), started daemon 140530096785088)>, <Thread(Thread-36 (_listener), started daemon 140530071606976)>, <Threa
d(Thread-38 (_listener), started daemon 140529627023040)>, <Thread(Thread-39 (_listener), started daemon 140529618630336)>, <Th
read(Thread-40 (_bulk_collector), started daemon 140529610237632)>]
E           assert 20 == 1
E            +  where 20 = <function active_count at 0x7fd041fcfec0>()
E            +    where <function active_count at 0x7fd041fcfec0> = threading.active_count