java.lang.NullPointerException: Cannot invoke "org.reactivestreams.Publisher.subscribe(org.reactivestreams.Subscriber)" because "pub" is null
  at org.reactivestreams.tck.PublisherVerification$5$1.run(PublisherVerification.java:257)
  at org.reactivestreams.tck.PublisherVerification.activePublisherTest(PublisherVerification.java:1135)
  at org.reactivestreams.tck.PublisherVerification$5.apply(PublisherVerification.java:251)
  at org.reactivestreams.tck.PublisherVerification$5.apply(PublisherVerification.java:248)
  at org.reactivestreams.tck.PublisherVerification.stochasticTest(PublisherVerification.java:1204)
  at org.reactivestreams.tck.PublisherVerification.stochastic_spec103_mustSignalOnMethodsSequentially(PublisherVerification.java:248)
  at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
  at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.base/java.lang.reflect.Method.invoke(Method.java:568)
  at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:133)
  at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:598)
  at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)
  at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
  at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:824)
  at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)
  at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
  at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
  at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
  at org.testng.TestRunner.privateRun(TestRunner.java:794)
  at org.testng.TestRunner.run(TestRunner.java:596)
  at org.testng.SuiteRunner.runTest(SuiteRunner.java:377)
  at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:371)
  at org.testng.SuiteRunner.privateRun(SuiteRunner.java:332)
  at org.testng.SuiteRunner.run(SuiteRunner.java:276)
  at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
  at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
  at org.testng.TestNG.runSuitesSequentially(TestNG.java:1212)
  at org.testng.TestNG.runSuitesLocally(TestNG.java:1134)
  at org.testng.TestNG.runSuites(TestNG.java:1063)
  at org.testng.TestNG.run(TestNG.java:1031)
  at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:135)
  at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.executeMulti(TestNGDirectoryTestSuite.java:193)
  at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.execute(TestNGDirectoryTestSuite.java:94)
  at org.apache.maven.surefire.testng.TestNGProvider.invoke(TestNGProvider.java:146)
  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)
------- Stderr: -------
[AbstractSseTest] [ERROR] launchServer caughtException
java.lang.RuntimeException: Failed to start SSE HTTP server
  at org.eclipse.microprofile.rest.client.tck.sse.HttpSseServer.start(HttpSseServer.java:46)
  at org.eclipse.microprofile.rest.client.tck.sse.AbstractSseTest.lambda$launchServer$0(AbstractSseTest.java:48)
  at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
  at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
  at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
  at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
  at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: java.io.IOException: Failed to bind to 0.0.0.0/0.0.0.0:10000
  at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:349)
  at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:310)
  at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80)
  at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:234)
  at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
  at org.eclipse.jetty.server.Server.doStart(Server.java:401)
  at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
  at org.eclipse.microprofile.rest.client.tck.sse.HttpSseServer.start(HttpSseServer.java:43)
  ... 6 more
Caused by: java.net.BindException: Address already in use
  at java.base/sun.nio.ch.Net.bind0(Native Method)
  at java.base/sun.nio.ch.Net.bind(Net.java:555)
  at java.base/sun.nio.ch.ServerSocketChannelImpl.netBind(ServerSocketChannelImpl.java:337)
  at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:294)
  at java.base/sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:89)
  at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConnector.java:344)
  ... 13 more
[ReactiveStreamsPublisherTckTest] [ERROR] Failed to create publisher
java.lang.AssertionError: Mock Sse Server did not start as expected expected [true] but found [false]
  at org.testng.Assert.fail(Assert.java:99)
  at org.testng.Assert.failNotEquals(Assert.java:1037)
  at org.testng.Assert.assertTrue(Assert.java:45)
  at org.eclipse.microprofile.rest.client.tck.sse.AbstractSseTest.launchServer(AbstractSseTest.java:62)
  at org.eclipse.microprofile.rest.client.tck.sse.ReactiveStreamsPublisherTckTest.createPublisher(ReactiveStreamsPublisherTckTest.java:106)
  at org.reactivestreams.tck.PublisherVerification.activePublisherTest(PublisherVerification.java:1134)
  at org.reactivestreams.tck.PublisherVerification$5.apply(PublisherVerification.java:251)
  at org.reactivestreams.tck.PublisherVerification$5.apply(PublisherVerification.java:248)
  at org.reactivestreams.tck.PublisherVerification.stochasticTest(PublisherVerification.java:1204)
  at org.reactivestreams.tck.PublisherVerification.stochastic_spec103_mustSignalOnMethodsSequentially(PublisherVerification.java:248)
  at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
  at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.base/java.lang.reflect.Method.invoke(Method.java:568)
  at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:133)
  at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:598)
  at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:173)
  at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
  at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:824)
  at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:146)
  at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
  at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
  at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
  at org.testng.TestRunner.privateRun(TestRunner.java:794)
  at org.testng.TestRunner.run(TestRunner.java:596)
  at org.testng.SuiteRunner.runTest(SuiteRunner.java:377)
  at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:371)
  at org.testng.SuiteRunner.privateRun(SuiteRunner.java:332)
  at org.testng.SuiteRunner.run(SuiteRunner.java:276)
  at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
  at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
  at org.testng.TestNG.runSuitesSequentially(TestNG.java:1212)
  at org.testng.TestNG.runSuitesLocally(TestNG.java:1134)
  at org.testng.TestNG.runSuites(TestNG.java:1063)
  at org.testng.TestNG.run(TestNG.java:1031)
  at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:135)
  at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.executeMulti(TestNGDirectoryTestSuite.java:193)
  at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.execute(TestNGDirectoryTestSuite.java:94)
  at org.apache.maven.surefire.testng.TestNGProvider.invoke(TestNGProvider.java:146)
  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)
java.lang.AssertionError: Mock Sse Server did not start as expected expected [true] but found [false]
  at org.testng.Assert.fail(Assert.java:99)
  at org.testng.Assert.failNotEquals(Assert.java:1037)
  at org.testng.Assert.assertTrue(Assert.java:45)
  at org.eclipse.microprofile.rest.client.tck.sse.AbstractSseTest.launchServer(AbstractSseTest.java:62)
  at org.eclipse.microprofile.rest.client.tck.sse.ReactiveStreamsPublisherTckTest.createPublisher(ReactiveStreamsPublisherTckTest.java:106)
  at org.reactivestreams.tck.PublisherVerification.activePublisherTest(PublisherVerification.java:1134)
  at org.reactivestreams.tck.PublisherVerification$5.apply(PublisherVerification.java:251)
  at org.reactivestreams.tck.PublisherVerification$5.apply(PublisherVerification.java:248)
  at org.reactivestreams.tck.PublisherVerification.stochasticTest(PublisherVerification.java:1204)
  at org.reactivestreams.tck.PublisherVerification.stochastic_spec103_mustSignalOnMethodsSequentially(PublisherVerification.java:248)
  at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
  at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.base/java.lang.reflect.Method.invoke(Method.java:568)
  at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:133)