Env Build

Adjust regex #37

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Run time

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Job	Run time
Python 3.7, macos-latest	3m 44s
Python 3.8, macos-latest	4m 13s
Python 3.9, macos-latest	3m 49s
Python 3.7, ubuntu-latest	1m 58s
Python 3.8, ubuntu-latest	1m 57s
Python 3.9, ubuntu-latest	1m 54s
Python 3.7, windows-latest	5m 45s
Python 3.8, windows-latest	5m 22s
Python 3.9, windows-latest	4m 34s
	33m 16s