root@tracker:~# ./phabricator/bin/phd start
[2016-12-10 16:36:50] EXCEPTION: (AphrontInvalidCredentialsQueryException) #1045: Access denied for user 'root'@'localhost' (using password: NO) at [<phutil>/src/aphront/storage/connection/mysql/AphrontBaseMySQLDatabaseConnection.php:321]
arcanist(head=master, ref.master=9e82ef979e81), phabricator(head=master, ref.master=3d6c3c2c45e8), phutil(head=master, ref.master=fa6519f4cea1)
  #0 AphrontBaseMySQLDatabaseConnection::throwCommonException(integer, string) called at [<phutil>/src/aphront/storage/connection/mysql/AphrontBaseMySQLDatabaseConnection.php:334]
  #1 AphrontBaseMySQLDatabaseConnection::throwConnectionException(integer, string, string, string) called at [<phutil>/src/aphront/storage/connection/mysql/AphrontMySQLiDatabaseConnection.php:72]
  #2 AphrontMySQLiDatabaseConnection::connect() called at [<phutil>/src/aphront/storage/connection/mysql/AphrontBaseMySQLDatabaseConnection.php:101]
  #3 AphrontBaseMySQLDatabaseConnection::establishConnection() called at [<phutil>/src/aphront/storage/connection/mysql/AphrontBaseMySQLDatabaseConnection.php:124]
  #4 AphrontBaseMySQLDatabaseConnection::requireConnection() called at [<phutil>/src/aphront/storage/connection/mysql/AphrontMySQLiDatabaseConnection.php:15]
  #5 AphrontMySQLiDatabaseConnection::escapeBinaryString(string) called at [<phutil>/src/aphront/storage/connection/mysql/AphrontMySQLiDatabaseConnection.php:11]
  #6 AphrontMySQLiDatabaseConnection::escapeUTF8String(string) called at [<phutil>/src/xsprintf/qsprintf.php:178]
  #7 xsprintf_query(AphrontMySQLiDatabaseConnection, string, integer, string, integer) called at [<phutil>/src/xsprintf/xsprintf.php:70]
  #8 xsprintf(string, AphrontMySQLiDatabaseConnection, array) called at [<phutil>/src/xsprintf/qsprintf.php:64]
  #9 qsprintf(AphrontMySQLiDatabaseConnection, string, string, string, string)
  #10 call_user_func_array(string, array) called at [<phutil>/src/xsprintf/queryfx.php:5]
  #11 queryfx(AphrontMySQLiDatabaseConnection, string, string, string, string)
  #12 call_user_func_array(string, array) called at [<phutil>/src/xsprintf/queryfx.php:13]
  #13 queryfx_all(AphrontMySQLiDatabaseConnection, string, string, string, string)
  #14 call_user_func_array(string, array) called at [<phutil>/src/aphront/storage/connection/AphrontDatabaseConnection.php:36]
  #15 AphrontDatabaseConnection::queryData(string, string, string, string)
  #16 call_user_func_array(array, array) called at [<phabricator>/src/infrastructure/storage/lisk/LiskDAO.php:535]
  #17 LiskDAO::loadRawDataWhere(string, string)
  #18 call_user_func_array(array, array) called at [<phabricator>/src/infrastructure/storage/lisk/LiskDAO.php:476]
  #19 LiskDAO::loadAllWhere(string, string) called at [<phabricator>/src/infrastructure/env/PhabricatorConfigDatabaseSource.php:19]
  #20 PhabricatorConfigDatabaseSource::loadConfig(string) called at [<phabricator>/src/infrastructure/env/PhabricatorConfigDatabaseSource.php:7]
  #21 PhabricatorConfigDatabaseSource::__construct(string) called at [<phabricator>/src/infrastructure/env/PhabricatorEnv.php:232]
  #22 PhabricatorEnv::buildConfigurationSourceStack(boolean) called at [<phabricator>/src/infrastructure/env/PhabricatorEnv.php:95]
  #23 PhabricatorEnv::initializeCommonEnvironment(boolean) called at [<phabricator>/src/infrastructure/env/PhabricatorEnv.php:75]
  #24 PhabricatorEnv::initializeScriptEnvironment(boolean) called at [<phabricator>/scripts/init/lib.php:22]
  #25 init_phabricator_script(array) called at [<phabricator>/scripts/init/init-script.php:10]
  #26 require_once(string) called at [<phabricator>/scripts/__init_script__.php:3]
  #27 require_once(string) called at [<phabricator>/scripts/daemon/manage_daemons.php:5]