properly scope try/except when loading obsoleted keys #4017

Job	Run time
Run unit tests in containers (Run unit tests for el9toel10 and common repositories on python 3.12...	54s
Run unit tests in containers (Run python linters for el9toel10 and common repositories on python ...	1m 22s
Run unit tests in containers (Run unit tests for el9toel10 and common repositories on python 3.9,...	51s
Run unit tests in containers (Run python linters for el9toel10 and common repositories on python ...	1m 17s
Run unit tests in containers (Run unit tests for el8toel9 and common repositories on python 3.9, ...	1m 2s
Run unit tests in containers (Run python linters for el8toel9 and common repositories on python 3...	1m 33s
Run unit tests in containers (Run unit tests for el8toel9 and common repositories on python 3.6, ...	1m 10s
Run unit tests in containers (Run python linters for el8toel9 and common repositories on python 3...	3m 23s
Run unit tests in containers (Run unit tests for el7toel8 and common repositories on python 3.6, ...	1m 13s
Run unit tests in containers (Run python linters for el7toel8 and common repositories on python 3...	4m 15s
Run unit tests in containers (Run unit tests for el7toel8 and common repositories on python 2.7, ...	1m 20s
Run unit tests in containers (Run python linters for el7toel8 and common repositories on python 2...	6m 42s
	25m 2s

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