MalformedInputException

fooo.txt

[fooo] $ test
[info] Compiling 1 Scala source to C:\Users\ma-nakamura\workspace\fooo\target\scala-2.11\classes...
[trace] Stack trace suppressed: run last *:doctestGenTests for the full output.
[error] (*:doctestGenTests) java.nio.charset.MalformedInputException: Input length = 1
[error] Total time: 5 s, completed 2014/12/18 14:06:38
[fooo] $ test

[fooo] $ last *:doctestGenTests
java.nio.charset.MalformedInputException: Input length = 1
        at java.nio.charset.CoderResult.throwException(CoderResult.java:281)
        at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:339)
        at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
        at java.io.InputStreamReader.read(InputStreamReader.java:184)
        at java.io.BufferedReader.fill(BufferedReader.java:161)
        at java.io.BufferedReader.read(BufferedReader.java:182)
        at scala.io.BufferedSource$$anonfun$iter$1$$anonfun$apply$mcI$sp$1.apply$mcI$sp(BufferedSource.scala:38)
        at scala.io.Codec.wrap(Codec.scala:68)
        at scala.io.BufferedSource$$anonfun$iter$1.apply(BufferedSource.scala:38)
        at scala.io.BufferedSource$$anonfun$iter$1.apply(BufferedSource.scala:38)
        at scala.collection.Iterator$$anon$9.next(Iterator.scala:162)
        at scala.collection.Iterator$$anon$17.hasNext(Iterator.scala:511)
        at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327)
        at scala.io.Source.hasNext(Source.scala:226)
        at scala.collection.Iterator$class.foreach(Iterator.scala:727)
        at scala.io.Source.foreach(Source.scala:178)
        at scala.collection.TraversableOnce$class.addString(TraversableOnce.scala:320)
        at scala.io.Source.addString(Source.scala:178)
        at scala.collection.TraversableOnce$class.mkString(TraversableOnce.scala:286)
        at scala.io.Source.mkString(Source.scala:178)
        at scala.collection.TraversableOnce$class.mkString(TraversableOnce.scala:288)
        at scala.io.Source.mkString(Source.scala:178)
        at scala.collection.TraversableOnce$class.mkString(TraversableOnce.scala:290)
        at scala.io.Source.mkString(Source.scala:178)
        at com.github.tkawachi.doctest.TestGenerator$.apply(TestGenerator.scala:23)
        at com.github.tkawachi.doctest.DoctestPlugin$$anonfun$5$$anonfun$apply$3.apply(DoctestPlugin.scala:64)
        at com.github.tkawachi.doctest.DoctestPlugin$$anonfun$5$$anonfun$apply$3.apply(DoctestPlugin.scala:64)
        at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:251)
        at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:251)
        at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
        at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
        at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:251)
        at scala.collection.AbstractTraversable.flatMap(Traversable.scala:105)
        at com.github.tkawachi.doctest.DoctestPlugin$$anonfun$5.apply(DoctestPlugin.scala:64)
        at com.github.tkawachi.doctest.DoctestPlugin$$anonfun$5.apply(DoctestPlugin.scala:56)
        at scala.Function1$$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$$anonfun$apply$1.apply(Execute.scala:226)
        at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:226)
        at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)
        at sbt.Execute.work(Execute.scala:235)
        at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:226)
        at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:226)
        at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:159)
        at sbt.CompletionService$$anon$2.call(CompletionService.scala:28)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        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:744)
[error] (*:doctestGenTests) java.nio.charset.MalformedInputException: Input length = 1
[fooo] $