GCOV instrumentation `.gcda` fails when run by atheris

We found that:
1. A Python library whose kernel is implemented in C/C++ with GCOV instrumentation;
2. Running it natively produces the coverage data `.gcda`;
3. Running it with Atheris will not produce the coverage `.gcda`;

Since atheris is a fuzzing tool and coverage information is very important as feedback, can we somehow try to support having dumped `.gcda` while running atheris? Thanks!

The re-producible is shown here:

https://colab.research.google.com/drive/1LQ69TIQqDZeuSC7FYOQxnAIGAwNFNQ6P?usp=sharing