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This repo has been archived.

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 (both tested with Nuitka Factory on 2019-07-15)

How to trigger the bug

In this case, we try to connect to http://10.10.10.10 and then timeout. When compiled with Nuitka, it triggers the RuntimeError bug.

Running on Linux (Docker) with native Python 3.6.8

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

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

# ./run-nuitka.sh
( ... docker building the image ... )
Traceback (most recent call last):
  File "/opt/app/main.dist/main.py", line 26, in <module>
  File "/opt/app/main.dist/main.py", line 22, 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 16, in run
RuntimeError: cannot reuse already awaited compiled_coroutine