This showed up with "RandomValidCommandsTest.java" in the hs-comp nightlies:

 stderr: [Exception in thread "main" java.lang.UnsatisfiedLinkError: sun.hotspot.WhiteBox.registerNatives()V
at sun.hotspot.WhiteBox.registerNatives(Native Method)
at sun.hotspot.WhiteBox.<clinit>(WhiteBox.java:68)
at compiler.whitebox.CompilerWhiteBoxTest.<clinit>(CompilerWhiteBoxTest.java:54)
at closed.compiler.compilercontrol.InlineAction.<clinit>(InlineAction.java:32)
at closed.compiler.compilercontrol.ExtendedBaseAction.check(ExtendedBaseAction.java:25)
at compiler.compilercontrol.share.actions.BaseAction.communicate(BaseAction.java:100)
at closed.compiler.compilercontrol.ExtendedBaseAction.main(ExtendedBaseAction.java:16)