According to [~dholmes]
When I do a slowdebug rebuild I get these:

[2.325s][warning][cds] java.lang.ClassNotFoundException: java.lang.invoke.BoundMethodHandle$Species_LLLLL
[2.325s][warning][cds] Preload Warning: Cannot find java/lang/invoke/BoundMethodHandle$Species_LLLLL
[2.326s][warning][cds] java.lang.ClassNotFoundException: java.lang.invoke.BoundMethodHandle$Species_LJ
[2.326s][warning][cds] Preload Warning: Cannot find java/lang/invoke/BoundMethodHandle$Species_LJ
[2.326s][warning][cds] java.lang.ClassNotFoundException: java.lang.invoke.BoundMethodHandle$Species_LLLLLL
[2.326s][warning][cds] Preload Warning: Cannot find java/lang/invoke/BoundMethodHandle$Species_LLLLLL
[2.327s][warning][cds] java.lang.ClassNotFoundException: java.lang.invoke.BoundMethodHandle$Species_LLLLLLL
[2.327s][warning][cds] Preload Warning: Cannot find java/lang/invoke/BoundMethodHandle$Species_LLLLLLL
[2.340s][warning][cds] java.lang.ClassNotFoundException: java.lang.invoke.BoundMethodHandle$Species_LLLLLLLL