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]