The runners have no unzip, so the harness exited 2 for a missing tool and the step failed on its own coverage guard instead. Adding a third tool to the battery for one step is the worse trade: python3 is already required here, and ZipFile.extractall drops modes and symlinks -- the exact defect this differential exists to catch -- so the external attributes are applied explicitly rather than trusted to an extractor. check-in: 2420f6fb88 user: dmestas tags: trunk