I added three new checks and ten unrelated tests went red. That was the system working.

I added three new checks to a build. Nothing about the code under test changed. Ten tests that had nothing to do with any of them went red, and a separate, unrelated block of work was refused outright. Both of those were correct. FAIL_ORACLE reason=row_without_its_oracle_or_fault_cells rows=OK_BRIDGE, OK_COST, OK_MUTATION (10 tests red with it)...