[issue41100] Build failure on macOS 11 (beta)

[Roundup Robot]

Change by Roundup Robot <devnull at psf.upfronthosting.co.za>:


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nosy: +python-dev
nosy_count: 12.0 -> 13.0
pull_requests: +22136
pull_request: https://github.com/python/cpython/pull/23239

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41100>
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