in extractor/src/main/scala-sbt-1.0-1.x/sbt/jetbrains/PluginCompatCommonSbt1.scala [19:27]
def throwExceptionIfUpdateFailed(result: Result[Map[sbt.Configuration,Keys.Classpath]]): Map[sbt.Configuration, Keys.Classpath] =
result match {
case sbt.Value(classpath) =>
classpath
case sbt.Inc(incomplete) =>
val cause = Incomplete.allExceptions(incomplete).headOption
cause.foreach(c => throw c)
Map.empty
}