Background

After talking to the developers on the web team in T317675, one of the leading pain points that emerged was that https://pixel.wmcloud.org lacks a way to see attribution (who/what caused changes?) and intentionality (were these changes intentional?) of visual differences.

Currently, if you want to know the context around the failures that appear on https://pixel.wmcloud.org, you need to manually hunt them down yourself by either going through commit messages, Phabricator tasks, or asking people. It can be a pretty big time waster.

This epic aims to make that easier by changing the report displayed on https://pixel.wmcloud.org to also show a list of commits that caused the change (attribution) and display the commit message associated with each change (intentionality) to alleviate some of this pain.

Wireframe

Acceptance Criteria

• When failures are displayed on the report comparing the latest release branches to the HEAD of the master branches, there are also a list of commits associated with those failures.
• Clicking on a "failed" commit should take you to the report generated for that commit.
• The commit message including its author should be displayed on each "failed" commit's report.