Since b65 is no longer possible to bootstrap a java agent into a VM that isn't created by the java launcher.

To duplicate this issue use a custom launcher or simply load an applet in the browser. Then try to connect using jconsole:

$ jconsole <pid>
Exception in thread "VMPanel.connect" java.lang.InternalError: instrument library is missing in target VM
        at sun.tools.attach.HotSpotVirtualMachine.loadAgent(HotSpotVirtualMachine.java:87)
        at sun.tools.jconsole.LocalVirtualMachine.loadManagementAgent(LocalVirtualMachine.java:245)
        at sun.tools.jconsole.LocalVirtualMachine.startManagementAgent(LocalVirtualMachine.java:83)
        at sun.tools.jconsole.ProxyClient.tryConnect(ProxyClient.java:327)
        at sun.tools.jconsole.ProxyClient.connect(ProxyClient.java:297)
        at sun.tools.jconsole.VMPanel$2.run(VMPanel.java:277)

When jconsole attaches to the target VM it will request the target VM to load management-agent.jar. Loading a java agent requires loading libinstrument.so and this library cannot be loaded due to the dependence on jli/libjli.so. This issue did not exist prior to b65.