public interface InterruptibleRunnable {
  void run() throws Exception;
}

class MyRunnable
  include java.lang.Runnable
  include InterruptibleRunnable
  def run; end
end

java.lang.ClassFormatError: Duplicate method name&signature in class file InterfaceImpl1388241424
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
	at org.jruby.util.JRubyClassLoader.defineClass(JRubyClassLoader.java:22)
	at org.jruby.java.MiniJava.defineOldStyleImplClass(MiniJava.java:510)
	at org.jruby.java.MiniJava.createOldStyleImplClass(MiniJava.java:193)
	at org.jruby.javasupport.Java.new_proxy_instance2(Java.java:1565)
	at org.jruby.java.proxies.JavaInterfaceTemplate.jcreateProxy(JavaInterfaceTemplate.java:251)
	at org.jruby.java.proxies.JavaInterfaceTemplate.access$000(JavaInterfaceTemplate.java:23)
	at org.jruby.java.proxies.JavaInterfaceTemplate$3.call(JavaInterfaceTemplate.java:158)
	at org.jruby.internal.runtime.methods.JavaMethod$JavaMethodNoBlock.call(JavaMethod.java:62)
	at org.jruby.RubyClass.finvoke(RubyClass.java:343)
	at org.jruby.javasupport.util.RuntimeHelpers.invoke(RuntimeHelpers.java:297)
	at org.jruby.java.proxies.JavaInterfaceTemplate$2.call(JavaInterfaceTemplate.java:142)
	at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:242)
	at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:151)
	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:275)
	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:116)
	at org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)
	at org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)
	at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:101)
	at org.jruby.internal.runtime.methods.DefaultMethod.interpretedCall(DefaultMethod.java:163)
	at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:140)
	at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:232)
	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:266)
	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:85)
	at org.jruby.ast.CallNoArgBlockNode.interpret(CallNoArgBlockNode.java:63)
	at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:101)
	at org.jruby.ast.BlockNode.interpret(BlockNode.java:67)
	at org.jruby.internal.runtime.methods.DefaultMethod.interpretedCall(DefaultMethod.java:163)
	at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:140)
	at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:190)
	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:248)
	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:34)
	at org.jruby.ast.CallManyArgsNode.interpret(CallManyArgsNode.java:59)
	at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:101)
	at org.jruby.ast.BlockNode.interpret(BlockNode.java:67)
	at org.jruby.internal.runtime.methods.DefaultMethod.interpretedCall(DefaultMethod.java:163)
	at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:140)