[play scala 2.1.2] Migration 2.0.4 -> 2.1.2-RC1

[Ibs Devs]

...trying to migrate a 2.0.4 scala project to play 2.1.2-RC1.

play compile fails with OutOfMemoryError (java heap space) on a Java 7, 32 Bit machine:

java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: Java heap space

        at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252)

        at java.util.concurrent.FutureTask.get(FutureTask.java:111)

        at sbt.ConcurrentRestrictions$$anon$4.take(ConcurrentRestrictions.scala:196)

        at sbt.Execute.next$1(Execute.scala:85)

        at sbt.Execute.processAll(Execute.scala:88)

        at sbt.Execute.runKeep(Execute.scala:68)

        at sbt.EvaluateTask$.run$1(EvaluateTask.scala:162)

        at sbt.EvaluateTask$.runTask(EvaluateTask.scala:177)

        at sbt.Aggregation$$anonfun$4.apply(Aggregation.scala:46)

        at sbt.Aggregation$$anonfun$4.apply(Aggregation.scala:44)

        at sbt.EvaluateTask$.withStreams(EvaluateTask.scala:137)

        at sbt.Aggregation$.runTasksWithResult(Aggregation.scala:44)

        at sbt.Aggregation$.runTasks(Aggregation.scala:59)

        at sbt.Aggregation$$anonfun$applyTasks$1.apply(Aggregation.scala:31)

        at sbt.Aggregation$$anonfun$applyTasks$1.apply(Aggregation.scala:30)

        at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:62)

        at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:62)

        at sbt.Command$.process(Command.scala:90)

        at sbt.MainLoop$$anonfun$next$1$$anonfun$apply$1.apply(MainLoop.scala:71)

        at sbt.MainLoop$$anonfun$next$1$$anonfun$apply$1.apply(MainLoop.scala:71)

        at sbt.State$$anon$2.process(State.scala:170)

        at sbt.MainLoop$$anonfun$next$1.apply(MainLoop.scala:71)

        at sbt.MainLoop$$anonfun$next$1.apply(MainLoop.scala:71)

        at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)

        at sbt.MainLoop$.next(MainLoop.scala:71)

        at sbt.MainLoop$.run(MainLoop.scala:64)

        at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:53)

        at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:50)

        at sbt.Using.apply(Using.scala:25)

        at sbt.MainLoop$.runWithNewLog(MainLoop.scala:50)

        at sbt.MainLoop$.runAndClearLast(MainLoop.scala:33)

        at sbt.MainLoop$.runLoggedLoop(MainLoop.scala:17)

        at sbt.MainLoop$.runLogged(MainLoop.scala:13)

        at sbt.xMain.run(Main.scala:26)

        at xsbt.boot.Launch$.run(Launch.scala:55)

        at xsbt.boot.Launch$$anonfun$explicit$1.apply(Launch.scala:45)

        at xsbt.boot.Launch$.launch(Launch.scala:69)

        at xsbt.boot.Launch$.apply(Launch.scala:16)

        at xsbt.boot.Boot$.runImpl(Boot.scala:31)

        at xsbt.boot.Boot$.main(Boot.scala:20)

        at xsbt.boot.Boot.main(Boot.scala)

Caused by: java.lang.OutOfMemoryError: Java heap space

        at java.util.Arrays.copyOfRange(Arrays.java:2694)

        at java.lang.String.<init>(String.java:234)

        at java.lang.StringBuilder.toString(StringBuilder.java:405)

        at scala.collection.mutable.StringBuilder.toString(StringBuilder.scala:427)

        at scala.collection.TraversableOnce$class.mkString(TraversableOnce.scala:272)

        at scala.collection.AbstractTraversable.mkString(Traversable.scala:105)

        at scala.collection.TraversableOnce$class.mkString(TraversableOnce.scala:274)

        at scala.collection.AbstractTraversable.mkString(Traversable.scala:105)

        at scala.tools.nsc.Global.supplementErrorMessage(Global.scala:1158)

        at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1556)

        at scala.tools.nsc.Global$Run.compileSources(Global.scala:1544)

        at scala.tools.nsc.Global$Run.compile(Global.scala:1654)

        at xsbt.CachedCompiler0.run(CompilerInterface.scala:90)

        at xsbt.CachedCompiler0.run(CompilerInterface.scala:72)

        at xsbt.CompilerInterface.run(CompilerInterface.scala:27)

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

        at java.lang.reflect.Method.invoke(Method.java:601)

        at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:73)

        at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:35)

        at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:29)

        at sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileScala$1$1.apply$mcV$sp(AggressiveCompile.scala:71)

        at sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileScala$1$1.apply(AggressiveCompile.scala:71)

        at sbt.compiler.AggressiveCompile$$anonfun$4$$anonfun$compileScala$1$1.apply(AggressiveCompile.scala:71)

        at sbt.compiler.AggressiveCompile.sbt$compiler$AggressiveCompile$$timed(AggressiveCompile.scala:101)

        at sbt.compiler.AggressiveCompile$$anonfun$4.compileScala$1(AggressiveCompile.scala:70)

        at sbt.compiler.AggressiveCompile$$anonfun$4.apply(AggressiveCompile.scala:88)

        at sbt.compiler.AggressiveCompile$$anonfun$4.apply(AggressiveCompile.scala:60)

        at sbt.inc.IncrementalCompile$$anonfun$doCompile$1.apply(Compile.scala:24)

        at sbt.inc.IncrementalCompile$$anonfun$doCompile$1.apply(Compile.scala:22)

        at sbt.inc.Incremental$.cycle(Incremental.scala:45)

Any ideas?

[OlegYch]

This is most likely caused by Play 2.0 using scala 2.9 while 2.1 uses 2.10. Might also be caused by increased number of dependencies. The only solution would be to increase heap size when running play.