Issue Text
Issue Text: a task in harbor-swesmith-rl-artifacts: Harbor SWE-Smith 强化学习数据产物 (Harbor dataset). Describe the bug After updating to the latest version, field renaming in JsonFormatter doesn't work correctly when trying to rename fields that don't exist in the log record. Also, when renaming fields…
The task
**Describe the bug** After updating to the latest version, field renaming in JsonFormatter doesn't work correctly when trying to rename fields that don't exist in the log record. Also, when renaming fields like 'exc_info', both the original and renamed fields appear in the output.