Build stuck on python3 setup.py build_ext

[abratchik]

I'm trying to build MultiNEAT and facing the following issue - when I run

root@9178f8ded2ac:/mnt/diskd/source/MultiNEAT# python3 setup.py build_ext
running build_ext
building 'MultiNEAT._MultiNEAT' extension
creating build
creating build/temp.linux-x86_64-3.6
creating build/temp.linux-x86_64-3.6/src

and the build stops here forever.

My environment is in Docker container:
Ubuntu 18.04
Python 3.6
OpenCV 4.1
Boost 1.70.0

When I check the folder build/temp.linux-x86_64-3.6/src it is empty.

[abratchik]

seems like monkey-patch for parallel compilation is not working. After commenting the whole block the build is going fine.