MAINT: Replace warning with logging.error #4160

Job	Run time
Check code style issues	21s
Build & verify package	13s
pytest on windows	4m 47s
pytest on 3.7 (crypto-lib: cryptography)	3m 23s
pytest on 3.8 (crypto-lib: cryptography)	3m 32s
pytest on 3.9 (crypto-lib: cryptography)	3m 42s
pytest on 3.10 (crypto-lib: cryptography)	3m 42s
pytest on 3.11 (crypto-lib: cryptography)	3m 15s
pytest on 3.12 (crypto-lib: cryptography)	5m 7s
pytest on 3.7 (crypto-lib: pycryptodome)	3m 26s
pytest on 3.7 (crypto-lib: none)	3m 31s
Combine & check coverage.	13s
	35m 12s

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