I've used version control history to verify that a mysterious bug was not caused by any changes in the codebase. Instead, we were set up to automatically incorp

I've used version control history to verify that a mysterious bug was not caused by any changes in the codebase. Instead, we were set up to automatically incorporate minor version changes in dependencies, one of which improperly had a breaking change. This class of bug is impossible to find by following the logic of the code because it's not in the code.