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We very often end up writing scripts that iterate over on a range of commits to our repository. We usually do this to find when a bug was introduced or evaluate some impact over time (e.g., performance).

This step involves interactively reflecting the revision iteration status when someone is visiting the status dashboard. The main queue page should say which jobs are queued up and which are pending. The job page should show where it is in the revision range and what the return code from the script was for completed tasks (zero is success). Visiting either page should interactively update as the backend makes progress.