Python multiprocessing requires /dev/shm

[maleadt]

PkgEval using Sandbox.jl doesn't work with packages that use Python:

PkgEval failed: Error building `PyCall`: 
PREFIX=/root/.julia/conda/3
Unpacking payload ...
Traceback (most recent call last):
  File "entry_point.py", line 59, in <module>
  File "concurrent/futures/process.py", line 555, in __init__
  File "concurrent/futures/process.py", line 165, in __init__
  File "multiprocessing/queues.py", line 42, in __init__
  File "multiprocessing/context.py", line 68, in Lock
  File "multiprocessing/synchronize.py", line 162, in __init__
  File "multiprocessing/synchronize.py", line 57, in __init__
OSError: [Errno 38] Function not implemented

https://github.com/python/cpython/blob/b136b1aac4b7d07e3120ee59e41c02bc86032162/Lib/multiprocessing/synchronize.py#L57-L59

https://forums.aws.amazon.com/thread.jspa?threadID=219962