During JDK8 b180 promotion testing test tools/launcher/FXLauncherTest.java failed on windows-x64 fastdebug binaries with following asserion:
  # To suppress the following error report, specify this argument
  # after -XX: or in .hotspotrc: SuppressErrorAt=\\runtime/jniHandles.hpp:224
  #
  # A fatal error has been detected by the Java Runtime Environment:
  #
  # Internal Error (c:\\HUDSON\\workspace\\9-2-build-windows-amd64-cygwin-phase2\\jdk9\\6702\\hotspot\\src\\share\\vm\\runtime/jniHandles.hpp:224), pid=38508, tid=25604
  # assert(value != deleted_handle()) failed: Used a deleted global handle
  #
  # JRE version: Java(TM) SE Runtime Environment (9.0+180) (fastdebug build 9+180)
  # Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 9+180, mixed mode, tiered, compressed oops, g1 gc, windows-amd64)
  # Core dump will be written. Default location: C:\\Users\\aurora\\sandbox\\results\\workDir\\tools\\launcher\\FXLauncherTest\\hs_err_pid38508.mdmp
  #
  # An error report file with more information is saved as:
  # C:\\Users\\aurora\\sandbox\\results\\workDir\\tools\\launcher\\FXLauncherTest\\hs_err_pid38508.log
  #
  # If you would like to submit a bug report, please visit:
  # http://bugreport.java.com/bugreport/crash.jsp