Doing work
Clearing refs
Freeing refs
Timeout signalled after 1,920 seconds

Exception in thread "main" com.sun.tools.attach.AttachNotSupportedException: Unable to open socket file: target process not responding or HotSpot VM not loaded
at sun.tools.attach.VirtualMachineImpl.<init>(jdk.attach@9-internal/VirtualMachineImpl.java:106)
at sun.tools.attach.AttachProviderImpl.attachVirtualMachine(jdk.attach@9-internal/AttachProviderImpl.java:58)
at com.sun.tools.attach.VirtualMachine.attach(jdk.attach@9-internal/VirtualMachine.java:207)
at sun.tools.jmap.JMap.executeCommandForPid(jdk.jcmd@9-internal/JMap.java:125)
at sun.tools.jmap.JMap.main(jdk.jcmd@9-internal/JMap.java:113)