Our phabricator is at 6816974d57 and arc patch is failing. Also, diffusion isn't showing arc patch commands anymore. Not sure if that's related.
Here's the output of --trace
ARGV '/opt/arcanist/bin/../scripts/arcanist.php' 'patch' 'D1313' '--trace' LOAD Loaded "phutil" from "/opt/libphutil/src". LOAD Loaded "arcanist" from "/opt/arcanist/src". Config: Reading user configuration file "/home/reuben/.arcrc"... Config: Did not find system configuration at "/etc/arcconfig". Working Copy: Reading .arcconfig from "/home/reuben/hologram-python/.arcconfig". Working Copy: Path "/home/reuben/hologram-python" is part of `git` working copy "/h ome/reuben/hologram-python". Working Copy: Project root is at "/home/reuben/hologram-python". Config: Did not find local configuration at "/home/reuben/hologram-python/.git/arc/ config". >>> [0] <conduit> differential.querydiffs() <bytes = 75> >>> [1] <http> https://phabricator.knkdt.com/api/differential.querydiffs <<< [1] <http> 68,784 us <<< [0] <conduit> 91,264 us >>> [2] <conduit> user.whoami() <bytes = 117> >>> [3] <http> https://phabricator.knkdt.com/api/user.whoami <<< [3] <http> 53,735 us <<< [2] <conduit> 54,703 us >>> [4] <conduit> differential.querydiffs() <bytes = 156> >>> [5] <http> https://phabricator.knkdt.com/api/differential.querydiffs <<< [5] <http> 53,091 us <<< [4] <conduit> 53,999 us [2017-01-10 21:09:24] EXCEPTION: (ConduitClientException) ERR-CONDUIT-CORE: Array f or %Ld conversion is empty. Query: id IN (%Ld) at [<phutil>/src/conduit/ConduitFutu re.php:58] arcanist(head=master, ref.master=ade25facfdf2), phutil(head=master, ref.master=c584 8b71c10f) #0 ConduitFuture::didReceiveResult(array) called at [<phutil>/src/future/FuturePr oxy.php:58] #1 FutureProxy::getResult() called at [<phutil>/src/future/FutureProxy.php:35] #2 FutureProxy::resolve() called at [<arcanist>/src/workflow/ArcanistWorkflow.php :1197] #3 ArcanistWorkflow::loadBundleFromConduit(ConduitClient, array) called at [<arca nist>/src/workflow/ArcanistWorkflow.php:1189] #4 ArcanistWorkflow::loadRevisionBundleFromConduit(ConduitClient, string) called at [<arcanist>/src/workflow/ArcanistPatchWorkflow.php:384] #5 ArcanistPatchWorkflow::run() called at [<arcanist>/src/workflow/ArcanistPatchW orkflow.php:397] #6 ArcanistPatchWorkflow::run() called at [<arcanist>/scripts/arcanist.php:394]