unable to build with sbt on ubuntu

[kk00ss]

compilation terminated.
make: *** [capnpc-java] Error 1
[trace] Stack trace suppressed: run last examples/:makeExamples for the full output.
[trace] Stack trace suppressed: run last compiler/:makeCpp for the full output.
error Nonzero exit value: 2
error Nonzero exit value: 2
[error] Total time: 1 s, completed Jun 29, 2015 7:35:02 PM
capnproto-java$ last compiler/*:makeCpp
java.lang.RuntimeException: Nonzero exit value: 2
at scala.sys.package$.error(package.scala:27)
at scala.Predef$.error(Predef.scala:142)
at sbt.AbstractProcessBuilder.getString(ProcessImpl.scala:146)
at sbt.AbstractProcessBuilder.$bang$bang(ProcessImpl.scala:148)
at Build$$anonfun$2.apply$mcV$sp(build.scala:74)
at Build$$anonfun$2.apply(build.scala:73)
at Build$$anonfun$2.apply(build.scala:73)
at sbt.std.Transform$$anon$3$$anonfun$apply$2.apply(System.scala:45)
at sbt.std.Transform$$anon$3$$anonfun$apply$2.apply(System.scala:45)
at sbt.std.Transform$$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:745)
error Nonzero exit value: 2