I'm seeing this error log in phd logs every a few seconds though I haven't found any impact yet:
[20-Jan-2017 10:22:54 Asia/Shanghai] [2017-01-20 10:22:54] EXCEPTION: (PhutilProxyException) Error while executing Task ID 1171793. {>} (Exception) DateTime::__construct(): Failed to parse time string (@) at position 0 (@): Unexpected character at [<phutil>/src/parser/calendar/data/PhutilCalendarAbsoluteDateTime.php:63] [20-Jan-2017 10:22:54 Asia/Shanghai] arcanist(head=master, ref.master=e17fe43ca3fe), phabricator(head=cyyun, ref.master=cfcc3b834d1d, ref.cyyun=d09045a51b3a, custom=2), phutil(head=cyyun, ref.master=89984ac20059, ref.cyyun=5bc5bde08be9), sprint(head=master, ref.master=df6e9dee03e4) [20-Jan-2017 10:22:54 Asia/Shanghai] #0 <#2> DateTime::__construct(string) called at [<phutil>/src/parser/calendar/data/PhutilCalendarAbsoluteDateTime.php:63] [20-Jan-2017 10:22:54 Asia/Shanghai] #1 <#2> PhutilCalendarAbsoluteDateTime::newFromEpoch(NULL) called at [<phabricator>/src/applications/calendar/storage/PhabricatorCalendarEvent.php:728] [20-Jan-2017 10:22:54 Asia/Shanghai] #2 <#2> PhabricatorCalendarEvent::newIntermediateEventNode(PhabricatorUser, array) called at [<phabricator>/src/applications/calendar/util/PhabricatorCalendarICSWriter.php:50] [20-Jan-2017 10:22:54 Asia/Shanghai] #3 <#2> PhabricatorCalendarICSWriter::writeICSDocument() called at [<phabricator>/src/applications/calendar/editor/PhabricatorCalendarEventEditor.php:360] [20-Jan-2017 10:22:54 Asia/Shanghai] #4 <#2> PhabricatorCalendarEventEditor::newICSAttachment(PhabricatorCalendarEvent) called at [<phabricator>/src/applications/calendar/editor/PhabricatorCalendarEventEditor.php:333] [20-Jan-2017 10:22:54 Asia/Shanghai] #5 <#2> PhabricatorCalendarEventEditor::buildMailBody(PhabricatorCalendarEvent, array) called at [<phabricator>/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php:2517] [20-Jan-2017 10:22:54 Asia/Shanghai] #6 <#2> PhabricatorApplicationTransactionEditor::buildMailForTarget(PhabricatorCalendarEvent, array, PhabricatorMailTarget) called at [<phabricator>/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php:2474] [20-Jan-2017 10:22:54 Asia/Shanghai] #7 <#2> PhabricatorApplicationTransactionEditor::buildMail(PhabricatorCalendarEvent, array) called at [<phabricator>/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php:1156] [20-Jan-2017 10:22:54 Asia/Shanghai] #8 <#2> PhabricatorApplicationTransactionEditor::publishTransactions(PhabricatorCalendarEvent, array) called at [<phabricator>/src/applications/transactions/worker/PhabricatorApplicationTransactionPublishWorker.php:21] [20-Jan-2017 10:22:54 Asia/Shanghai] #9 <#2> PhabricatorApplicationTransactionPublishWorker::doWork() called at [<phabricator>/src/infrastructure/daemon/workers/PhabricatorWorker.php:123] [20-Jan-2017 10:22:54 Asia/Shanghai] #10 <#2> PhabricatorWorker::executeTask() called at [<phabricator>/src/infrastructure/daemon/workers/storage/PhabricatorWorkerActiveTask.php:171] [20-Jan-2017 10:22:54 Asia/Shanghai] #11 <#2> PhabricatorWorkerActiveTask::executeTask() called at [<phabricator>/src/infrastructure/daemon/workers/PhabricatorTaskmasterDaemon.php:22] [20-Jan-2017 10:22:54 Asia/Shanghai] #12 PhabricatorTaskmasterDaemon::run() called at [<phutil>/src/daemon/PhutilDaemon.php:181] [20-Jan-2017 10:22:54 Asia/Shanghai] #13 PhutilDaemon::execute() called at [<phutil>/scripts/daemon/exec/exec_daemon.php:127]
version info:
phabricator d09045a51b3a12955640e4de27268bc7976328ad (Dec 1 2016) arcanist e17fe43ca3fe6dc6dd0b5ce056f56310ea1d3d51 (Oct 22 2016) phutil 5bc5bde08be9d5da49c1728c104c161da69b3677 (Dec 1 2016) sprint df6e9dee03e4dd0da551199df33b6d04bf096d32 (Apr 11 2016)