[TESTBUG] DcmdMBeanTestCheckJni.java reports false positive

The following test fails in the JDK17 CI:

com/sun/management/DiagnosticCommandMBean/DcmdMBeanTestCheckJni.java

Here's a snippet from the log file:

#section:main
----------messages:(5/240)----------
command: main DcmdMBeanTestCheckJni
reason: User specified action: run main/othervm DcmdMBeanTestCheckJni
Mode: othervm [/othervm specified]
Additional options from @modules: --add-modules jdk.management
elapsed time (seconds): 4.714
----------configuration:(3/45)----------
Boot Layer
  add modules: jdk.management

----------System.out:(7/1492)*----------
Command line: [c:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-17+7-413\\windows-x64-debug.jdk\\jdk-17\\fastdebug\\bin\\java.exe -cp T:\\testoutput\\test-support\\jtreg_open_test_jdk_jdk_management\\classes\\4\\com\\sun\\management\\DiagnosticCommandMBean\\DcmdMBeanTestCheckJni.d;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-17+7-413\\src.full\\open\\test\\jdk\\com\\sun\\management\\DiagnosticCommandMBean;T:\\testoutput\\test-support\\jtreg_open_test_jdk_jdk_management\\classes\\4\\test\\lib;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-17+7-413\\src.full\\open\\test\\lib;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\5.1\\b01\\bundles\\jtreg_bin-5.1.zip\\jtreg\\lib\\javatest.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\5.1\\b01\\bundles\\jtreg_bin-5.1.zip\\jtreg\\lib\\jtreg.jar -Xmx512m -XX:MaxRAMPercentage=4 -Djava.io.tmpdir=t:\\testoutput\\test-support\\jtreg_open_test_jdk_jdk_management\\tmp -ea -esa -XX:+CreateCoredumpOnCrash -XX:+UseZGC -Xcheck:jni DcmdMBeanRunner ]
[2021-01-25T12:38:45.120926800Z] Gathering output for process 61876
[2021-01-25T12:38:48.646225100Z] Waiting for completion for process 61876
[2021-01-25T12:38:48.646225100Z] Waiting for completion finished for process 61876
Output and diagnostic info for process 61876 was saved into 'pid-61876-output.log'
[2021-01-25T12:38:48.677569400Z] Waiting for completion for process 61876
[2021-01-25T12:38:48.677569400Z] Waiting for completion finished for process 61876
----------System.err:(80/6279)*----------
 stdout: [WARNING: JNI local refs: 33, exceeds capacity: 32
at java.net.NetworkInterface.getAll(java.base@17-ea/Native Method)
at java.net.NetworkInterface.getNetworkInterfaces(java.base@17-ea/NetworkInterface.java:351)
at sun.security.provider.SeedGenerator.addNetworkAdapterInfo(java.base@17-ea/SeedGenerator.java:229)
at sun.security.provider.SeedGenerator$1.run(java.base@17-ea/SeedGenerator.java:179)
at sun.security.provider.SeedGenerator$1.run(java.base@17-ea/SeedGenerator.java:167)
at java.security.AccessController.executePrivileged(java.base@17-ea/AccessController.java:753)
at java.security.AccessController.doPrivileged(java.base@17-ea/AccessController.java:312)
at sun.security.provider.SeedGenerator.getSystemEntropy(java.base@17-ea/SeedGenerator.java:167)
at sun.security.provider.AbstractDrbg$SeederHolder.<clinit>(java.base@17-ea/AbstractDrbg.java:551)
at sun.security.provider.AbstractDrbg.getEntropyInput(java.base@17-ea/AbstractDrbg.java:505)
at sun.security.provider.AbstractDrbg.getEntropyInput(java.base@17-ea/AbstractDrbg.java:494)
at sun.security.provider.AbstractDrbg.instantiateIfNecessary(java.base@17-ea/AbstractDrbg.java:696)
- locked <0x00001000005b8230> (a sun.security.provider.HashDrbg)
at sun.security.provider.AbstractDrbg.engineNextBytes(java.base@17-ea/AbstractDrbg.java:378)
at sun.security.provider.AbstractDrbg.engineNextBytes(java.base@17-ea/AbstractDrbg.java:334)
at sun.security.provider.DRBG.engineNextBytes(java.base@17-ea/DRBG.java:234)
at java.security.SecureRandom.nextBytes(java.base@17-ea/SecureRandom.java:751)
at java.security.SecureRandom.next(java.base@17-ea/SecureRandom.java:808)
at java.util.Random.nextInt(java.base@17-ea/Random.java:329)
at java.rmi.server.UID.<init>(java.rmi@17-ea/UID.java:112)
- locked <0x000010000055d9b8> (a java.lang.Object)
at java.rmi.server.ObjID.<clinit>(java.rmi@17-ea/ObjID.java:88)
at sun.rmi.transport.LiveRef.<init>(java.rmi@17-ea/LiveRef.java:74)
at javax.management.remote.rmi.RMIJRMPServerImpl.export(java.management.rmi@17-ea/RMIJRMPServerImpl.java:156)
at javax.management.remote.rmi.RMIJRMPServerImpl.export(java.management.rmi@17-ea/RMIJRMPServerImpl.java:138)
at javax.management.remote.rmi.RMIConnectorServer.start(java.management.rmi@17-ea/RMIConnectorServer.java:453)
- locked <0x000010000053b478> (a javax.management.remote.rmi.RMIConnectorServer)
at DcmdMBeanRunner.main(DcmdMBeanTestCheckJni.java:70)
WARNING: JNI local refs: 66, exceeds capacity: 65
at java.net.NetworkInterface.getAll(java.base@17-ea/Native Method)
at java.net.NetworkInterface.getNetworkInterfaces(java.base@17-ea/NetworkInterface.java:351)
at sun.security.provider.SeedGenerator.addNetworkAdapterInfo(java.base@17-ea/SeedGenerator.java:229)
at sun.security.provider.SeedGenerator$1.run(java.base@17-ea/SeedGenerator.java:179)
at sun.security.provider.SeedGenerator$1.run(java.base@17-ea/SeedGenerator.java:167)
at java.security.AccessController.executePrivileged(java.base@17-ea/AccessController.java:753)
at java.security.AccessController.doPrivileged(java.base@17-ea/AccessController.java:312)
at sun.security.provider.SeedGenerator.getSystemEntropy(java.base@17-ea/SeedGenerator.java:167)
at sun.security.provider.AbstractDrbg$SeederHolder.<clinit>(java.base@17-ea/AbstractDrbg.java:551)
at sun.security.provider.AbstractDrbg.getEntropyInput(java.base@17-ea/AbstractDrbg.java:505)
at sun.security.provider.AbstractDrbg.getEntropyInput(java.base@17-ea/AbstractDrbg.java:494)
at sun.security.provider.AbstractDrbg.instantiateIfNecessary(java.base@17-ea/AbstractDrbg.java:696)
- locked <0x00001000005b8230> (a sun.security.provider.HashDrbg)
at sun.security.provider.AbstractDrbg.engineNextBytes(java.base@17-ea/AbstractDrbg.java:378)
at sun.security.provider.AbstractDrbg.engineNextBytes(java.base@17-ea/AbstractDrbg.java:334)
at sun.security.provider.DRBG.engineNextBytes(java.base@17-ea/DRBG.java:234)
at java.security.SecureRandom.nextBytes(java.base@17-ea/SecureRandom.java:751)
at java.security.SecureRandom.next(java.base@17-ea/SecureRandom.java:808)
at java.util.Random.nextInt(java.base@17-ea/Random.java:329)
at java.rmi.server.UID.<init>(java.rmi@17-ea/UID.java:112)
- locked <0x000010000055d9b8> (a java.lang.Object)
at java.rmi.server.ObjID.<clinit>(java.rmi@17-ea/ObjID.java:88)
at sun.rmi.transport.LiveRef.<init>(java.rmi@17-ea/LiveRef.java:74)
at javax.management.remote.rmi.RMIJRMPServerImpl.export(java.management.rmi@17-ea/RMIJRMPServerImpl.java:156)
at javax.management.remote.rmi.RMIJRMPServerImpl.export(java.management.rmi@17-ea/RMIJRMPServerImpl.java:138)
at javax.management.remote.rmi.RMIConnectorServer.start(java.management.rmi@17-ea/RMIConnectorServer.java:453)
- locked <0x000010000053b478> (a javax.management.remote.rmi.RMIConnectorServer)
at DcmdMBeanRunner.main(DcmdMBeanTestCheckJni.java:70)
DiagnosticCommand MBean: com.sun.management:type=DiagnosticCommand
DcmdMBeanRunner COMPLETE
];
 stderr: []
 exitValue = 0

java.lang.RuntimeException: 'WARNING: JNI local refs: \\d+, exceeds capacity: \\d+' found in stdout: 'WARNING: JNI local refs: 33, exceeds capacity: 32'

at jdk.test.lib.process.OutputAnalyzer.shouldNotMatch(OutputAnalyzer.java:381)
at DcmdMBeanTestCheckJni.main(DcmdMBeanTestCheckJni.java:51)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:831)

JavaTest Message: Test threw exception: java.lang.RuntimeException: 'WARNING: JNI local refs: \\d+, exceeds capacity: \\d+' found in stdout: 'WARNING: JNI local refs: 33, exceeds capacity: 32'

This is a new test that was included in the fix for:

    JDK-8258836 JNI local refs exceed capacity getDiagnosticCommandInfo

So far this test has failed in two Mach5 Tier3 job sets in a row.
In the jdk-17+7-413-tier3 sighting, the test task's JVM args are:

-XX:+CreateCoredumpOnCrash -XX:+UseZGC