It's a zip archive which includes diff result(diff.txt), the screenshot of the failed test(fail.png), the screenshot of the resolved test(fix.png).
TestCellFormat.testApplyObjectDate().zip (application/x-zip-compressed), 224.29 KB, created by Hyeonmin Park on 2020-02-26 12:55:29 UTC
Creator: Hyeonmin Park
Created: 2020-02-26 12:55:29 UTC
Size: 224.29 KB

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Attachments on bug 64179: 37045 | 37046 | 37047 | 37048