FORKED mode test driver throws UnsupportedOperationException during shutdown on Linux + JDK11

java.lang.UnsupportedOperationException
at org.infinispan.server.test.core.ForkedServer.getPid(ForkedServer.java:175)
at org.infinispan.server.test.core.ForkedInfinispanServerDriver.lambda$kill$3(ForkedInfinispanServerDriver.java:123)
at org.infinispan.commons.test.Exceptions.unchecked(Exceptions.java:268)
at org.infinispan.server.test.core.ForkedInfinispanServerDriver.kill(ForkedInfinispanServerDriver.java:123)
at org.infinispan.server.test.core.ForkedInfinispanServerDriver.stop(ForkedInfinispanServerDriver.java:77)
at org.infinispan.server.test.core.AbstractInfinispanServerDriver.stop(AbstractInfinispanServerDriver.java:124)
at org.infinispan.server.test.junit4.InfinispanServerRule$1.evaluate(InfinispanServerRule.java:81)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.jboss.arquillian.junit.Arquillian.run(Arquillian.java:115)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)