After building the latest ISPN snapshot (HEAD == ISPN-6137 Fix ScriptMetadataTest.testBrokenParameters), the server throws the following warning:
ISPN000152: Passivation configured without an eviction policy being selected. Only manually evicted entities will be passivated.
This happens whether I use default standalone.xml configuration or add eviction and passivation elements in the config. I.e. tried this config and still getting the warning:

<eviction strategy="LRU" size="1" type="COUNT"/>
<file-store passivation="true" path="dc" purge="true" shared="false"/>

It looks like the eviction is working properly, it's just the warning that makes confusion.