- Renamed a task to have a unique word in the title.
- Ran `bin/search index Txxx`.
- Searched for unique word.
- Found task.
- Added a `sleep(10)` after the `lock()` call.
- Ran `bin/search index Txxx` in two windows.
- Saw first one lock, sleep 10 seconds, index.
- Saw second one give up temporarily after failing to grab the lock.