Missing test coverage: worker-entry output

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While working on #353293 (closed), some problems were found with the output of worker-entry, for example the order in which operations were reported. There were a number of tests for the output of worker-entry related to specific parts that should be present in special circumstances (such as error messages for schema errors or missing exclusion files), but nothing verifying the desired output in normal situations.

A new test test_report_output_each_operation was added to do basic verification of the problems noticed in the branch, but we should consider what other test coverage would be useful.