Spark源码编译问题

最近在学习spark源码，但是使用sbt对源码进行编译时，出现了下面这个问题：
java.lang.RuntimeException: Failing because of negative scalastyle result
        at scala.sys.package$.error(package.scala:27)
        at org.scalastyle.sbt.Tasks$.handleResult$1(Plugin.scala:132)
        at org.scalastyle.sbt.Tasks$.doScalastyleWithConfig$1(Plugin.scala:187)
        at org.scalastyle.sbt.Tasks$.doScalastyle(Plugin.scala:192)
        at SparkBuild$$anonfun$cachedScalaStyle$1$$anonfun$17.apply(SparkBuild.s                                                                                                                                  cala:174)
        at SparkBuild$$anonfun$cachedScalaStyle$1$$anonfun$17.apply(SparkBuild.s                                                                                                                                  cala:160)
        at sbt.FileFunction$$anonfun$cached$1.apply(Tracked.scala:253)
        at sbt.FileFunction$$anonfun$cached$1.apply(Tracked.scala:253)
        at sbt.FileFunction$$anonfun$cached$2$$anonfun$apply$3$$anonfun$apply$4.                                                                                                                                  apply(Tracked.scala:267)
        at sbt.FileFunction$$anonfun$cached$2$$anonfun$apply$3$$anonfun$apply$4.                                                                                                                                  apply(Tracked.scala:263)
        at sbt.Difference.apply(Tracked.scala:224)
        at sbt.Difference.apply(Tracked.scala:206)
        at sbt.FileFunction$$anonfun$cached$2$$anonfun$apply$3.apply(Tracked.sca                                                                                                                                  la:263)
        at sbt.FileFunction$$anonfun$cached$2$$anonfun$apply$3.apply(Tracked.sca                                                                                                                                  la:262)
        at sbt.Difference.apply(Tracked.scala:224)
        at sbt.Difference.apply(Tracked.scala:200)
        at sbt.FileFunction$$anonfun$cached$2.apply(Tracked.scala:262)
        at sbt.FileFunction$$anonfun$cached$2.apply(Tracked.scala:260)
        at SparkBuild$$anonfun$cachedScalaStyle$1.apply(SparkBuild.scala:181)
        at SparkBuild$$anonfun$cachedScalaStyle$1.apply(SparkBuild.scala:155)
        at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
        at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:40)
        at sbt.std.Transform$$anon$4.work(System.scala:63)
        at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:22                                                                                                                                  8)
        at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:22                                                                                                                                  8)
        at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)
        at sbt.Execute.work(Execute.scala:237)
        at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:228)
        at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:228)
        at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestric                                                                                                                                  tions.scala:159)
        at sbt.CompletionService$$anon$2.call(CompletionService.scala:28)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:51                                                                                                                                  1)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.                                                                                                                                  java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor                                                                                                                                  .java:617)
        at java.lang.Thread.run(Thread.java:745)
java.lang.RuntimeException: Failing because of negative scalastyle result
        at scala.sys.package$.error(package.scala:27)
        at org.scalastyle.sbt.Tasks$.handleResult$1(Plugin.scala:132)
        at org.scalastyle.sbt.Tasks$.doScalastyleWithConfig$1(Plugin.scala:187)
        at org.scalastyle.sbt.Tasks$.doScalastyle(Plugin.scala:192)
        at SparkBuild$$anonfun$cachedScalaStyle$1$$anonfun$17.apply(SparkBuild.s                                                                                                                                  cala:174)
        at SparkBuild$$anonfun$cachedScalaStyle$1$$anonfun$17.apply(SparkBuild.s                                                                                                                                  cala:160)
        at sbt.FileFunction$$anonfun$cached$1.apply(Tracked.scala:253)
        at sbt.FileFunction$$anonfun$cached$1.apply(Tracked.scala:253)
        at sbt.FileFunction$$anonfun$cached$2$$anonfun$apply$3$$anonfun$apply$4.                                                                                                                                  apply(Tracked.scala:267)
        at sbt.FileFunction$$anonfun$cached$2$$anonfun$apply$3$$anonfun$apply$4.                                                                                                                                  apply(Tracked.scala:263)
        at sbt.Difference.apply(Tracked.scala:224)
        at sbt.Difference.apply(Tracked.scala:206)
        at sbt.FileFunction$$anonfun$cached$2$$anonfun$apply$3.apply(Tracked.sca                                                                                                                                  la:263)
        at sbt.FileFunction$$anonfun$cached$2$$anonfun$apply$3.apply(Tracked.sca                                                                                                                                  la:262)
        at sbt.Difference.apply(Tracked.scala:224)
        at sbt.Difference.apply(Tracked.scala:200)
        at sbt.FileFunction$$anonfun$cached$2.apply(Tracked.scala:262)
        at sbt.FileFunction$$anonfun$cached$2.apply(Tracked.scala:260)
        at SparkBuild$$anonfun$cachedScalaStyle$1.apply(SparkBuild.scala:181)
        at SparkBuild$$anonfun$cachedScalaStyle$1.apply(SparkBuild.scala:155)
        at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
        at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:40)
        at sbt.std.Transform$$anon$4.work(System.scala:63)
        at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:22                                                                                                                                  8)
        at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:22                                                                                                                                  8)
        at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)
        at sbt.Execute.work(Execute.scala:237)
        at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:228)
        at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:228)
        at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestric                                                                                                                                  tions.scala:159)
        at sbt.CompletionService$$anon$2.call(CompletionService.scala:28)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:51                                                                                                                                  1)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.                                                                                                                                  java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor                                                                                                                                  .java:617)
        at java.lang.Thread.run(Thread.java:745)
[error] (core/*:scalaStyleOnTest) Failing because of negative scalastyle result
[error] (core/*:scalaStyleOnCompile) Failing because of negative scalastyle resu                                                                                                                                  lt不过使用maven进行编译可以通过。在这里就是想问下这到底是什么问题