CI: intermittent segfaults on `macOS py37_macos` run
See https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=61339&view=logs&j=b516280a-8c75-541b-8ba0-ae13561718a7&t=a9217cb1-24f6-5625-717d-72085a70e1d3

and https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=61324&view=logs&j=b516280a-8c75-541b-8ba0-ae13561718a7&t=a9217cb1-24f6-5625-717d-72085a70e1d3

for some examples on 2 different runs. I've only noticed it on this run, will look to try to see when it started (unless anyone knows :)