MAINT: Fix formatting of warning message and include exception message #5939

Job	Run time
Build & verify package	14s
Build & verify package	14s
Check code style issues	41s
Check code style issues	41s
pytest on 3.8 (crypto-lib: cryptography)	5m 31s
pytest on 3.8 (crypto-lib: cryptography)	5m 31s
pytest on windows	6m 30s
pytest on windows	6m 59s
pytest on 3.9 (crypto-lib: cryptography)	5m 32s
pytest on 3.9 (crypto-lib: cryptography)	5m 26s
pytest on 3.10 (crypto-lib: cryptography)	5m 37s
pytest on 3.10 (crypto-lib: cryptography)	5m 37s
pytest on 3.11 (crypto-lib: cryptography)	5m 7s
pytest on 3.11 (crypto-lib: cryptography)	5m 7s
pytest on 3.12 (crypto-lib: cryptography)	5m 48s
pytest on 3.12 (crypto-lib: cryptography)	7m 10s
pytest on 3.13 (crypto-lib: cryptography)	5m 50s
pytest on 3.13 (crypto-lib: cryptography)	6m 28s
pytest on 3.8 (crypto-lib: pycryptodome)	5m 45s
pytest on 3.8 (crypto-lib: pycryptodome)	5m 41s
pytest on 3.8 (crypto-lib: none)	5m 43s
pytest on 3.8 (crypto-lib: none)	5m 59s
Combine & check coverage.	0s
Combine & check coverage.	13s
	1h 47m 24s

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