Regression bug in Scala 2.10.0-RC1

.gitignore

/.idea/
target/
lib_managed/
src_managed/
test-output/
*.iml

applicationsrcmainscalaorgexampleMain.scala

package org.example

object Main extends App {
   println(foo.bar.Foo.bar)
}

build.properties

sbt.version=0.12.1

Foo.scala

package foo.bar

object Foo {
  def bar = 42
}

libsrcmainscalaorgexampleFoo.scala

package foo.bar

object Foo {
  def bar = 42
}

libsrcmainscalaorgexamplepackage.scala

package foo

package object bar {
  type Foo = Int => String
}

Main.scala

package org.example

object Main extends App {
   println(foo.bar.Foo.bar)
}

package.scala

package foo

package object bar {
  type Foo = Int => String
}

projectbuild.properties

sbt.version=0.12.1

projectScalaProjectBuild.scala

import sbt._
import sbt.Keys._

object ScalaProjectBuild extends Build {
  lazy val root =
    Project("root", file("."))
      .aggregate(lib, app)

  lazy val lib =
    Project("lib", file("lib"))
      .settings(scalaVersion := "2.10.0-RC1")
  lazy val app =
    Project("application", file("application")).dependsOn(lib)
      .settings(scalaVersion := "2.10.0-RC1")
}

ScalaProjectBuild.scala

import sbt._
import sbt.Keys._

object ScalaProjectBuild extends Build {
  lazy val root =
    Project("root", file("."))
      .aggregate(lib, app)

  lazy val lib =
    Project("lib", file("lib"))
      .settings(scalaVersion := "2.10.0-RC1")
  lazy val app =
    Project("application", file("application")).dependsOn(lib)
      .settings(scalaVersion := "2.10.0-RC1")
}