formatting an exception.

formatStackTraceString.scala

// http://stackoverflow.com/questions/1149703/how-can-i-convert-a-stack-trace-to-a-string

def formatStackTraceString(t: Throwable): String = {
  s"""
     | exception: ${t.getClass.getName}
     | message: ${t.getMessage}
     | cause: ${t.getCause}
     | stacktrace:
     | ${indent(t.getStackTraceString, spaces = 4)}
  """.stripMargin
}