Github user JoshRosen commented on the pull request:
https://github.com/apache/spark/pull/2933#issuecomment-60450522
@ScrapCodes It looks like the Scala style checks failed due to a line that
contained 104 characters, but the scalastyle output didn't list the actual
cause of the failure:
```
Scalastyle checks failed at following occurrences:
java.lang.RuntimeException: exists error
at scala.sys.package$.error(package.scala:27)
at scala.Predef$.error(Predef.scala:142)
[error] (core/*:scalastyle) exists error
```
Any idea why it's not displaying the cause of the failure?
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