Issue tracked at Nuitka/#213

This repo illustrates a potential bug when using Nuitka with asyncio coroutines. In some cases, Exceptions are returned as RuntimeError: cannot reuse already awaited coroutine instead of the correct Exception. This is very similar to bug Issue 404 fixed in 0.5.32.

It can be easily reproduced using Docker containers.

This exact reproducer only works on Python 3.7. It works by changing the Dockerfile-nuitka base image to Python 3.6.8.

Running with Python 3.7.3

# ./run-native.sh
( ... docker building the image ... )

Cancelled
Exception catched: Ok, time to crash! - If you see this, the Nuitka issue is not present.

Running on Linux (Docker), compiled with Nuitka 0.6.3.1 on Python 3.7.3

# ./run-nuitka.sh
( ... docker building the image ... )

Traceback (most recent call last):
  File "/opt/app/main.dist/main.py", line 50, in <module>
  File "/opt/app/main.dist/main.py", line 46, in main
  File "/opt/app/main.dist/asyncio/base_events.py", line 584, in run_until_complete
  File "/opt/app/main.dist/main.py", line 24, in run
  File "/opt/app/main.dist/main.py", line 39, in writer
RuntimeError: cannot reuse already awaited coroutine