Scala.js compiler crash with new SAM expansion

[error] error: scala.reflect.internal.FatalError:
[error]   Could not generate raw function maker for JS function: Found a non-apply method method $anonfun$4 in
 @SerialVersionUID(value = 0) final <synthetic> class anonfun$toJSPromise$extension$1 extends scala.scalajs.js
.Function with scala.scalajs.js.Function2 with Serializable {
[error]   final def apply(arg1: scala.scalajs.js.Function1, arg2: scala.scalajs.js.Function1): Unit = anonfun$
toJSPromise$extension$1.this.$this$1.onComplete({
[error]     ((x0$2: scala.util.Try) => anonfun$toJSPromise$extension$1.this.$anonfun$4(arg1, arg2, x0$2))
[error]   }, anonfun$toJSPromise$extension$1.this.executor$1);
[error]   final <bridge> <artifact> def apply(arg1: Object, arg2: Object): Object = {
[error]     anonfun$toJSPromise$extension$1.this.apply(arg1.$asInstanceOf[scala.scalajs.js.Function1](), arg2.
$asInstanceOf[scala.scalajs.js.Function1]());
[error]     scala.runtime.BoxedUnit.UNIT
[error]   };
[error]   <synthetic> <paramaccessor> private[this] val executor$1: scala.concurrent.ExecutionContext = _;
[error]   <synthetic> <paramaccessor> private[this] val $this$1: scala.concurrent.Future = _;
[error]   final <artifact> private[this] def $anonfun$4(arg1$1: scala.scalajs.js.Function1, arg2$1: scala.scal
ajs.js.Function1, x0$2: scala.util.Try): Object = {
[error]     case <synthetic> val x1: scala.util.Try = x0$2;
[error]     case6(){
[error]       if (x1.$isInstanceOf[scala.util.Success]())
[error]         {
[error]           <synthetic> val x2: scala.util.Success = (x1.$asInstanceOf[scala.util.Success](): scala.util
.Success);
[error]           {
[error]             val value: scala.scalajs.js.| = x2.value().$asInstanceOf[scala.scalajs.js.|]();
[error]             matchEnd5(arg1$1.apply(value))
[error]           }
[error]         }
[error]       else
[error]         case7()
[error]     };
[error]     case7(){
[error]       if (x1.$isInstanceOf[scala.util.Failure]())
[error]         {
[error]           <synthetic> val x3: scala.util.Failure = (x1.$asInstanceOf[scala.util.Failure](): scala.util
.Failure);
[error]           {
[error]             val th: Throwable = x3.exception();
[error]             matchEnd5(arg2$1.apply({
[error]               case <synthetic> val x1: Throwable = th;
[error]               case5(){
[error]                 if (x1.$isInstanceOf[scala.scalajs.js.JavaScriptException]())
[error]                   {
[error]                     <synthetic> val x2: scala.scalajs.js.JavaScriptException = (x1.$asInstanceOf[scala
.scalajs.js.JavaScriptException](): scala.scalajs.js.JavaScriptException);
[error]                     {
[error]                       val e: Object = x2.exception();
[error]                       matchEnd4(e)
[error]                     }
[error]                   }
[error]                 else
[error]                   case6()
[error]               };
[error]               case6(){
[error]                 matchEnd4(th)
[error]               };
[error]               matchEnd4(x: Object){
[error]                 x
[error]               }
[error]             }))
[error]           }
[error]         }
[error]       else
[error]         case8()
[error]     };
[error]     case8(){
[error]       matchEnd5(throw new MatchError(x1))
[error]     };
[error]     matchEnd5(x: Object){
[error]       x
[error]     }
[error]   };
[error]   def <init>(executor$1: scala.concurrent.ExecutionContext, $this$1: scala.concurrent.Future): <$anon:
 scala.scalajs.js.Function with scala.scalajs.js.Function2> = {
[error]     anonfun$toJSPromise$extension$1.this.executor$1 = executor$1;
[error]     anonfun$toJSPromise$extension$1.this.$this$1 = $this$1;
[error]     anonfun$toJSPromise$extension$1.super.<init>(scala.collection.immutable.Nil);
[error]     ()
[error]   }
[error] }
[error]      while compiling: C:\Users\admintmp\Documents\Seb\scalajs\library\src\main\scala\scala\scalajs\js\
JSConverters.scala
[error]         during phase: jscode
[error]      library version: version 2.12.0-20160329-231926-3904c32
[error]     compiler version: version 2.12.0-20160329-231926-3904c32
[error]   reconstructed args: -encoding utf8 -deprecation -classpath C:\Users\admintmp\Documents\Seb\scalajs\l
ibrary\target\scala-2.12.0-3904c32-SNAPSHOT\classes;C:\Users\admintmp\.ivy2\cache\org.scala-lang\scala-library
\jars\scala-library-2.12.0-3904c32-SNAPSHOT.jar;C:\Users\admintmp\.ivy2\cache\org.scala-lang\scala-reflect\jar
s\scala-reflect-2.12.0-3904c32-SNAPSHOT.jar -feature -Xfatal-warnings -d C:\Users\admintmp\Documents\Seb\scala
js\library\target\scala-2.12.0-3904c32-SNAPSHOT\classes -Xplugin:C:\Users\admintmp\Documents\Seb\scalajs\compi
ler\target\scala-2.12.0-3904c32-SNAPSHOT\scalajs-compiler_2.12.0-3904c32-SNAPSHOT-0.6.9-SNAPSHOT.jar -unchecke
d
[error] ...
[error]         at scala.reflect.internal.Reporting.abort(Reporting.scala:59)
[error]         at scala.reflect.internal.SymbolTable.abort(SymbolTable.scala:16)
[error]         at org.scalajs.core.compiler.GenJSCode$JSCodePhase.org$scalajs$core$compiler$GenJSCode$JSCodeP
hase$$$anonfun$215(GenJSCode.scala:4175)
[error]         at org.scalajs.core.compiler.GenJSCode$JSCodePhase.gen$5(GenJSCode.scala:4231)
[error]         at org.scalajs.core.compiler.GenJSCode$JSCodePhase.org$scalajs$core$compiler$GenJSCode$JSCodeP
hase$$$anonfun$218(GenJSCode.scala:4207)
[error]         at org.scalajs.core.compiler.GenJSCode$JSCodePhase.org$scalajs$core$compiler$GenJSCode$JSCodeP
hase$$$anonfun$218$adapted(GenJSCode.scala:4207)
[error]         at scala.collection.immutable.List.foreach(List.scala:376)
[error]         at org.scalajs.core.compiler.GenJSCode$JSCodePhase.gen$5(GenJSCode.scala:4207)
[error]         at org.scalajs.core.compiler.GenJSCode$JSCodePhase.tryGenAndRecordAnonFunctionClassGeneric(Gen
JSCode.scala:4238)
[error]         at org.scalajs.core.compiler.GenJSCode$JSCodePhase.org$scalajs$core$compiler$GenJSCode$JSCodeP
hase$$$anonfun$214(GenJSCode.scala:4174)
[error]         at org.scalajs.core.compiler.util.ScopedVar$.withScopedVars(ScopedVar.scala:35)
[error]         at org.scalajs.core.compiler.GenJSCode$JSCodePhase.genAndRecordRawJSFunctionClass(GenJSCode.sc
ala:4172)
[error]         at org.scalajs.core.compiler.GenJSCode$JSCodePhase.org$scalajs$core$compiler$GenJSCode$JSCodeP
hase$$$anonfun$5(GenJSCode.scala:211)
[error]         at org.scalajs.core.compiler.GenJSCode$JSCodePhase.org$scalajs$core$compiler$GenJSCode$JSCodeP
hase$$$anonfun$5$adapted(GenJSCode.scala:209)
[error]         at scala.collection.TraversableLike.scala$collection$TraversableLike$$$anonfun$5(TraversableLi
ke.scala:248)
[error]         at scala.collection.immutable.List.foreach(List.scala:376)
[error]         at scala.collection.TraversableLike.filterImpl(TraversableLike.scala:247)
[error]         at scala.collection.AbstractTraversable.filterImpl(Traversable.scala:104)
[error]         at scala.collection.TraversableLike.filterNot(TraversableLike.scala:267)
[error]         at scala.collection.AbstractTraversable.filterNot(Traversable.scala:104)
[error]         at org.scalajs.core.compiler.GenJSCode$JSCodePhase.apply(GenJSCode.scala:209)
[error]         at scala.tools.nsc.Global$GlobalPhase.scala$tools$nsc$Global$GlobalPhase$$$anonfun$11(Global.s
cala:412)
[error]         at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:403)
[error]         at scala.tools.nsc.Global$GlobalPhase.scala$tools$nsc$Global$GlobalPhase$$$anonfun$10(Global.s
cala:379)
[error]         at scala.tools.nsc.Global$GlobalPhase.scala$tools$nsc$Global$GlobalPhase$$$anonfun$10$adapted(
Global.scala:379)
[error]         at scala.collection.Iterator.foreach(Iterator.scala:930)
[error]         at scala.collection.AbstractIterator.foreach(Iterator.scala:1407)
[error]         at scala.tools.nsc.Global$GlobalPhase.run(Global.scala:379)
[error]         at org.scalajs.core.compiler.GenJSCode$JSCodePhase.run(GenJSCode.scala:167)
[error]         at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1483)
[error]         at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1468)
[error]         at scala.tools.nsc.Global$Run.compileSources(Global.scala:1463)
[error]         at scala.tools.nsc.Global$Run.compile(Global.scala:1557)
[error]         at scala.tools.nsc.Driver.doCompile(Driver.scala:35)
[error]         at scala.tools.nsc.MainClass.doCompile(Main.scala:24)
[error]         at scala.tools.nsc.Driver.process(Driver.scala:55)
[error]         at scala.tools.nsc.Driver.main(Driver.scala:68)
[error]         at scala.tools.nsc.Main.main(Main.scala)
[trace] Stack trace suppressed: run last library/compile:compile for the full output.
[error] (library/compile:compile) Nonzero exit code returned from runner: 1
[error] Total time: 15 s, completed 30-mars-2016 12:27:26