remove stdout=subprocess.PIPE from env._call, see #7698 #7699
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Pull Request Check List
Resolves: #7698
I have zero insight in the code base and unfortunately can't see how I would add a test for this fix. But a minimal example can be found here https://gist.github.com/fzahle/3f0ae0237b325e736246bd467e56e6d5, that could be the basis for a test.