For projects with lots of contributors, it's plausible that a malicious contributor could sneak malicious code into the test evaluation. <!-- Edit the body of your new issue then click the ✓ "Create Issue" button in the top right of the editor. The first line will be the issue title. Assignees and Labels follow after a blank line. Leave an empty line before beginning the body of the issue. -->
For projects with lots of contributors, it's plausible that a malicious contributor could sneak malicious code into the test evaluation.