java.lang.ExceptionInInitializerError if top level package

[ipostanogov]

import sorm._

case class Named(name: String)

object Main {

  object Db extends Instance(
    entities = Set(
      Entity[Named]()
    ),
    url = "jdbc:postgresql://localhost/test",
    user = "postgres",
    password = "postgres",
    initMode = InitMode.DropAllCreate
  )

  def main(args: Array[String]) {
    Db.save(Named("foo"))
  }

}

leads to

[info] Running Main 
[error] (run-main-0) java.lang.ExceptionInInitializerError
java.lang.ExceptionInInitializerError
    at Main$.main(Main.scala:18)
    at Main.main(Main.scala)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
Caused by: scala.tools.reflect.ToolBoxError: reflective compilation has failed:

not found: type Named
    at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$ToolBoxGlobal.throwIfErrors(ToolBoxFactory.scala:316)
    at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$ToolBoxGlobal.wrapInPackageAndCompile(ToolBoxFactory.scala:198)
    at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$ToolBoxGlobal.compile(ToolBoxFactory.scala:252)
    at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$$anonfun$compile$2.apply(ToolBoxFactory.scala:429)
    at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$$anonfun$compile$2.apply(ToolBoxFactory.scala:422)
    at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$withCompilerApi$.liftedTree2$1(ToolBoxFactory.scala:355)
    at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$withCompilerApi$.apply(ToolBoxFactory.scala:355)
    at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl.compile(ToolBoxFactory.scala:422)
    at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl.eval(ToolBoxFactory.scala:444)
    at sorm.persisted.PersistedClass$.createClass(PersistedClass.scala:106)
    at sorm.persisted.PersistedClass$$anon$1$$anonfun$resolve$1.apply(PersistedClass.scala:125)
    at sorm.persisted.PersistedClass$$anon$1$$anonfun$resolve$1.apply(PersistedClass.scala:125)
    at scala.collection.mutable.MapLike$class.getOrElseUpdate(MapLike.scala:194)
    at scala.collection.mutable.AbstractMap.getOrElseUpdate(Map.scala:80)
    at sorm.persisted.PersistedClass$$anon$1.resolve(PersistedClass.scala:125)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at sorm.persisted.PersistedClass$.apply(PersistedClass.scala:129)
    at sorm.Instance$Initialization$$anonfun$9$$anonfun$apply$16.apply(Instance.scala:239)
    at sorm.Instance$Initialization$$anonfun$9$$anonfun$apply$16.apply(Instance.scala:239)
    at embrace.package$EmbraceAny$.$$extension(package.scala:6)
    at sorm.Instance$Initialization$$anonfun$9.apply(Instance.scala:239)
    at sorm.Instance$Initialization$$anonfun$9.apply(Instance.scala:239)
    at scala.collection.immutable.Set$Set1.foreach(Set.scala:79)
    at sorm.Instance$Initialization.<init>(Instance.scala:239)
    at sorm.Instance.<init>(Instance.scala:38)
    at Main$Db$.<init>(Main.scala:7)
    at Main$Db$.<clinit>(Main.scala)
    at Main$.main(Main.scala:18)
    at Main.main(Main.scala)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
[trace] Stack trace suppressed: run 'last compile:run' for the full output.
java.lang.RuntimeException: Nonzero exit code: 1
    at scala.sys.package$.error(package.scala:27)
[trace] Stack trace suppressed: run 'last compile:run' for the full output.
[error] (compile:run) Nonzero exit code: 1

If I move Main to any package (e.g. pkg.Main), then it works fine.

Environment:

sbt.version = 0.13.8
scalaVersion := "2.11.7"
libraryDependencies ++= Seq(
  "org.postgresql" % "postgresql" % "9.4-1201-jdbc41",
  "org.sorm-framework" % "sorm" % "0.3.18"
)
JDK = 1.8.0_60