Issue tracked at Nuitka/#165

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 and bug Nuitka/#213.

It can be easily reproduced using Docker containers.

This bug is present in Python 3.6.8 and 3.7.3 (both tested with Nuitka 0.6.4)

How to trigger the bug

In this case, we trigger two Domain name not found exception within aiodns. With the second one, we have the RuntimeError: cannot reuse already awaited coroutine exception.

Running on Linux (Docker) with native Python 3.6.8

# ./run-native.sh
( ... docker building the image ... )
Exception: (4, b'Domain name not found')
Exception: (4, b'Domain name not found')

Running on Linux (Docker), compiled with Nuitka 0.6.4 on Python 3.6.8

# ./run-nuitka.sh
( ... docker building the image ... )
Exception: (4, b'Domain name not found')
Traceback (most recent call last):
  File "/opt/app/main.dist/main.py", line 28, in <module>
  File "/opt/app/main.dist/main.py", line 24, in main
  File "/opt/app/main.dist/asyncio/base_events.py", line 484, in run_until_complete
  File "/opt/app/main.dist/main.py", line 19, in run
RuntimeError: cannot reuse already awaited compiled_coroutine