Not sure if this is related to recent changes or just a cache I need to drop, just writing it down so I don't lose it:
```
[2015-06-19 15:34:50] EXCEPTION: (AphrontDuplicateKeyQueryException) #1062: Duplicate entry 'TZDRQHD7vIWs' for key 'identityHash' at [<phutil>/src/aphront/storage/connection/mysql/AphrontBaseMySQLDatabaseConnection.php:299]
arcanist(head=master, ref.master=f06eea0d8484), phabricator(head=redesign-2015, ref.master=0fd0f171f10f, ref.redesign-2015=7d7e13d79b86), phutil(head=master, ref.master=81eed10bea57)
#0 AphrontBaseMySQLDatabaseConnection::throwQueryCodeException(integer, string) called at [<phutil>/src/aphront/storage/connection/mysql/AphrontBaseMySQLDatabaseConnection.php:275]
#1 AphrontBaseMySQLDatabaseConnection::throwQueryException(mysqli) called at [<phutil>/src/aphront/storage/connection/mysql/AphrontBaseMySQLDatabaseConnection.php:181]
#2 AphrontBaseMySQLDatabaseConnection::executeRawQuery(string) called at [<phutil>/src/xsprintf/queryfx.php:6]
#3 queryfx(AphrontMySQLiDatabaseConnection, string, string, string, array, string)
#4 call_user_func_array(string, array) called at [<phutil>/src/aphront/storage/connection/AphrontDatabaseConnection.php:28]
#5 AphrontDatabaseConnection::query(string, string, string, array, string) called at [<phabricator>/src/infrastructure/storage/lisk/LiskDAO.php:1261]
#6 LiskDAO::insertRecordIntoDatabase(string) called at [<phabricator>/src/infrastructure/storage/lisk/LiskDAO.php:1106]
#7 LiskDAO::insert() called at [<phabricator>/src/infrastructure/storage/lisk/LiskDAO.php:1075]
#8 LiskDAO::save() called at [<phabricator>/src/applications/diviner/storage/DivinerLiveSymbol.php:168]
#9 DivinerLiveSymbol::save() called at [<phabricator>/src/applications/diviner/publisher/DivinerLivePublisher.php:148]
#10 DivinerLivePublisher::createDocumentsByHash(array) called at [<phabricator>/src/applications/diviner/publisher/DivinerPublisher.php:151]
#11 DivinerPublisher::publishAtoms(array) called at [<phabricator>/src/applications/diviner/workflow/DivinerGenerateWorkflow.php:583]
#12 DivinerGenerateWorkflow::publishDocumentation(boolean, DivinerLivePublisher) called at [<phabricator>/src/applications/diviner/workflow/DivinerGenerateWorkflow.php:213]
#13 DivinerGenerateWorkflow::generateBook(string, PhutilArgumentParser) called at [<phabricator>/src/applications/diviner/workflow/DivinerGenerateWorkflow.php:80]
#14 DivinerGenerateWorkflow::execute(PhutilArgumentParser) called at [<phutil>/src/parser/argument/PhutilArgumentParser.php:406]
#15 PhutilArgumentParser::parseWorkflowsFull(array) called at [<phutil>/src/parser/argument/PhutilArgumentParser.php:301]
#16 PhutilArgumentParser::parseWorkflows(array) called at [<phabricator>/scripts/diviner/diviner.php:21]
```