Leaking not shut down cache manager cause VM crash on JDK6 and skipping tests

Please, see linked Bugzilla for more infromation, it also contains links for console outputs from CI jobs and other information we were able to gather.

Just very briefly, 2 most important meesages:

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!! (testng-ProtobufWrapperIndexingTest) Exiting because ProtobufWrapperIndexingTest has NOT shut down all the cache managers it has started !!!!!!!
!!!!!! (testng-ProtobufWrapperIndexingTest) See allocation stacktrace to find out where still-running cacheManager (org.infinispan.manager.DefaultCacheManager@1e601e6@Address:null) was created: !!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.14.1:test (default-test) on project infinispan-server-hotrod: Execution default-test of goal org.apache.maven.plugins:maven-surefire-plugin:2.14.1:test failed: The forked VM terminated without saying properly goodbye. VM crash or System.exit called ?

Occuring in:

[INFO] Building Infinispan Remote Query Server
[INFO] Building Infinispan Hot Rod Server
[INFO] Building Infinispan JPA CacheStore

modules