[JENKINS] Lucene-Solr-8.x-MacOSX (64bit/jdk-15) - Build # 2186 - Unstable!

[Policeman Jenkins Server <je...@thetaphi.de>]

Build: https://jenkins.thetaphi.de/job/Lucene-Solr-8.x-MacOSX/2186/
Java: 64bit/jdk-15 -XX:+UseCompressedOops -XX:+UseParallelGC

2 tests failed.
FAILED:  org.apache.solr.cloud.OverseerRolesTest.testDesignatedOverseerRestarts

Error Message:
There was an intermediate transition, previous: 127.0.0.1:49248_solr, intermediate transition: 127.0.0.1:49249_solr

Stack Trace:
java.lang.AssertionError: There was an intermediate transition, previous: 127.0.0.1:49248_solr, intermediate transition: 127.0.0.1:49249_solr
	at __randomizedtesting.SeedInfo.seed([D9DD1F239CD1EDF6:D1FC087CA28FFFFC]:0)
	at org.junit.Assert.fail(Assert.java:89)
	at org.apache.solr.cloud.OverseerRolesTest.waitForNewOverseer(OverseerRolesTest.java:70)
	at org.apache.solr.cloud.OverseerRolesTest.waitForNewOverseer(OverseerRolesTest.java:80)
	at org.apache.solr.cloud.OverseerRolesTest.testDesignatedOverseerRestarts(OverseerRolesTest.java:208)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1750)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:938)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:974)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:988)
	at com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
	at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
	at org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
	at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
	at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:817)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:468)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:947)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:832)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:883)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:894)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
	at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
	at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
	at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
	at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
	at org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
	at java.base/java.lang.Thread.run(Thread.java:832)


FAILED:  junit.framework.TestSuite.org.apache.solr.cloud.hdfs.HDFSCollectionsAPITest

Error Message:
1 thread leaked from SUITE scope at org.apache.solr.cloud.hdfs.HDFSCollectionsAPITest:     1) Thread[id=12575, name=nioEventLoopGroup-7-11, state=TIMED_WAITING, group=TGRP-HDFSCollectionsAPITest]         at java.base@15/java.lang.Thread.sleep(Native Method)         at app//io.netty.util.concurrent.SingleThreadEventExecutor.confirmShutdown(SingleThreadEventExecutor.java:790)         at app//io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:525)         at app//io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)         at app//io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)         at app//io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)         at java.base@15/java.lang.Thread.run(Thread.java:832)

Stack Trace:
com.carrotsearch.randomizedtesting.ThreadLeakError: 1 thread leaked from SUITE scope at org.apache.solr.cloud.hdfs.HDFSCollectionsAPITest: 
   1) Thread[id=12575, name=nioEventLoopGroup-7-11, state=TIMED_WAITING, group=TGRP-HDFSCollectionsAPITest]
        at java.base@15/java.lang.Thread.sleep(Native Method)
        at app//io.netty.util.concurrent.SingleThreadEventExecutor.confirmShutdown(SingleThreadEventExecutor.java:790)
        at app//io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:525)
        at app//io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
        at app//io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
        at app//io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
        at java.base@15/java.lang.Thread.run(Thread.java:832)
	at __randomizedtesting.SeedInfo.seed([D9DD1F239CD1EDF6]:0)