 error: cannot find symbol sun.misc.CompoundEnumeration

Error when built with javac 10.0.1

    [javac] classes/modules/java.base/java/lang/ClassLoader.java:29: error: cannot find symbol
    [javac] import sun.misc.CompoundEnumeration;
    [javac]                ^
    [javac]   symbol:   class CompoundEnumeration
    [javac]   location: package sun.misc

https://travis-ci.org/javapathfinder/jpf-core/builds/375815945#L2753-L2757