Following is the stack trace while doing arc diff
[2017-04-18 12:13:03] EXCEPTION: (PhutilAggregateException) Some linters failed:
- PhutilProxyException: JSHint returned unparseable output. at [<arcanist>/src/lint/engine/ArcanistLintEngine.php:274]
arcanist(head=master, ref.master=a59cfca5f190), phutil(head=master, ref.master=6fe33623cda6)
#0 <#3> PhutilJSONParser::parse(string) called at [<phutil>/src/utils/utils.php:1154] #1 <#3> phutil_json_decode(string) called at [<arcanist>/src/lint/linter/ArcanistJSHintLinter.php:119] #2 <#2> ArcanistJSHintLinter::parseLinterOutput(string, integer, string, string) called at [<arcanist>/src/lint/linter/ArcanistExternalLinter.php:437] #3 <#2> ArcanistExternalLinter::resolveFuture(string, ExecFuture) called at [<arcanist>/src/lint/linter/ArcanistFutureLinter.php:34] #4 <#2> ArcanistFutureLinter::didLintPaths(array) called at [<arcanist>/src/lint/engine/ArcanistLintEngine.php:605] #5 <#2> ArcanistLintEngine::executeDidLintOnPaths(ArcanistJSHintLinter, array) called at [<arcanist>/src/lint/engine/ArcanistLintEngine.php:556] #6 <#2> ArcanistLintEngine::executeLintersOnChunk(array, array) called at [<arcanist>/src/lint/engine/ArcanistLintEngine.php:484] #7 <#2> ArcanistLintEngine::executeLinters(array) called at [<arcanist>/src/lint/engine/ArcanistLintEngine.php:216] #8 ArcanistLintEngine::run() called at [<arcanist>/src/workflow/ArcanistLintWorkflow.php:334] #9 ArcanistLintWorkflow::run() called at [<arcanist>/scripts/arcanist.php:394]
<<< [17] <exec> 371,116 us