```
../arcanist/bin/arc unit
COVERAGE REPORT
97% changes/models/test.py
100% tests/changes/api/serializer/models/test_testcase.py
100% changes/api/serializer/models/testcase.py
UNIT OKAY No unit test failures.
Updated an existing Differential revision:
Revision URI: https://tails.corp.dropbox.com/D43387
Included changes:
M changes/api/serializer/models/testcase.py
M changes/models/test.py
M tests/changes/api/serializer/models/test_testcase.py
```