Initial failure:
https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_x64%20tool_tests_commands/5203/overview.

Initial re-run which eventually passed:
https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_x64%20tool_tests_commands/5207/overview.

Probably a manual re-run, that was pending (and then passed):
https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_x64%20tool_tests_commands/5208/overview

What I think happened is a test failed (timed out), tree status was correctly reported as red, an automatic re-run started, then someone requested a manual re-run, and even though the automatic re-run eventually passed, the manual re-run was still pending, so the task was still marked as red (probably faulty logic around "there is a red run, and a pending run" or similar).