Possible race condition in zip creation? about sbt-native-packager HOT 9 CLOSED

./foo
./foo/conf
./foo/conf/foo.conf
./project
./project/Build.scala
./project/plugins.sbt

import sbt._
import Keys._
import com.typesafe.sbt.SbtNativePackager
import com.typesafe.sbt.SbtNativePackager._

object Foo extends Build {

  val buildSettings = Defaults.defaultSettings ++ Seq (
    organization := "foo",
    scalaVersion := "2.10.2"
  )

  lazy val foo = Project(
    base = file("foo"),
    id = "foo",
    settings = buildSettings ++ 
      SbtNativePackager.packagerSettings ++
      Seq( mappings in Universal := Seq(file("conf/foo.conf") -> "conf/foo.conf")
    )
  )
}

[eus-loaner-22] [02:17 PM] [sb] > sbt
[info] Loading global plugins from /Users/gregj/.sbt/0.13/plugins
[info] Loading project definition from /Users/gregj/scratch/sb/project
[info] Compiling 1 Scala source to /Users/gregj/scratch/sb/project/target/scala-2.10/sbt-0.13/classes...
[info] Set current project to sb (in build file:/Users/gregj/scratch/sb/)
> project foo
[info] Set current project to foo (in build file:/Users/gregj/scratch/sb/)
> universal:packageBin
[trace] Stack trace suppressed: run 'last foo/universal:packageBin' for the full output.
[error] (foo/universal:packageBin) java.io.IOException: This archives contains unclosed entries.
[error] Total time: 0 s, completed Nov 6, 2013 2:17:59 PM
> last foo/universal:packageBin
java.io.IOException: This archives contains unclosed entries.
        at org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream.finish(ZipArchiveOutputStream.java:413)
        at org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream.close(ZipArchiveOutputStream.java:806)
        at com.typesafe.sbt.packager.universal.ZipHelper$.withZipOutput(ZipHelper.scala:107)
        at com.typesafe.sbt.packager.universal.ZipHelper$.archive(ZipHelper.scala:87)
        at com.typesafe.sbt.packager.universal.ZipHelper$.zip(ZipHelper.scala:53)
        at com.typesafe.sbt.packager.universal.Archives$.makeZip(Archives.scala:15)
        at com.typesafe.sbt.packager.universal.UniversalPlugin$$anonfun$com$typesafe$sbt$packager$universal$UniversalPlugin$$makePackageSettingsForConfig$1.apply(UniversalPlugin.scala:31)
        at com.typesafe.sbt.packager.universal.UniversalPlugin$$anonfun$com$typesafe$sbt$packager$universal$UniversalPlugin$$makePackageSettingsForConfig$1.apply(UniversalPlugin.scala:31)
        at scala.Function3$$anonfun$tupled$1.apply(Function3.scala:35)
        at scala.Function3$$anonfun$tupled$1.apply(Function3.scala:34)
        at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
        at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:42)
        at sbt.std.Transform$$anon$4.work(System.scala:64)
        at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)
        at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:237)
        at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)
        at sbt.Execute.work(Execute.scala:244)
        at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)
        at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:237)
        at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:160)
        at sbt.CompletionService$$anon$2.call(CompletionService.scala:30)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)
[error] (foo/universal:packageBin) java.io.IOException: This archives contains unclosed entries.