The following test failed in the JDK21 CI:

jdk/classfile/CorpusTest.java

Here's a snippet from the log file:

SUCCESSFUL CorpusTest::testNullAdaptations '[3377] /System/Volumes/Data/mesos/work_dir/slaves/782b3f2b-1fe4-42ad-a0aa-b7bf2f5b3ebf-S5205/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/3057cabf-c476-4906-b224-5cdac26c2d33/runs/12aa94a1-de3e-499e-b54f-1babb7033f91/testoutput/test-support/jtreg_open_test_jdk_tier1_part3/classes/3/jdk/classfile/CorpusTest.d/helpers/ClassRecord$ConstantPoolEntryRecord$CpMethodTypeRecord.class'
SUCCESSFUL CorpusTest::testNullAdaptations '[3376] /System/Volumes/Data/mesos/work_dir/slaves/782b3f2b-1fe4-42ad-a0aa-b7bf2f5b3ebf-S5205/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/3057cabf-c476-4906-b224-5cdac26c2d33/runs/12aa94a1-de3e-499e-b54f-1babb7033f91/testoutput/test-support/jtreg_open_test_jdk_tier1_part3/classes/3/jdk/classfile/CorpusTest.d/helpers/ClassRecord$LocalVariableRecord.class'
SUCCESSFUL CorpusTest::testNullAdaptations '[3364] /System/Volumes/Data/mesos/work_dir/slaves/782b3f2b-1fe4-42ad-a0aa-b7bf2f5b3ebf-S5205/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/3057cabf-c476-4906-b224-5cdac26c2d33/runs/12aa94a1-de3e-499e-b54f-1babb7033f91/testoutput/test-support/jtreg_open_test_jdk_tier1_part3/classes/3/jdk/classfile/CorpusTest.d/helpers/ClassRecord$AttributesRecord.class'
JavaTest Message: JUnit Platform Failure(s): 1

[ JUnit Containers: found 5, started 5, succeeded 5, failed 0, aborted 0, skipped 0]
[ JUnit Tests: found 6754, started 6754, succeeded 6753, failed 1, aborted 0, skipped 0]

java.lang.Exception: JUnit test failure
at com.sun.javatest.regtest.agent.JUnitRunner.runWithJUnitPlatform(JUnitRunner.java:150)
at com.sun.javatest.regtest.agent.JUnitRunner.main(JUnitRunner.java:96)
at com.sun.javatest.regtest.agent.JUnitRunner.main(JUnitRunner.java:62)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:125)
at java.base/java.lang.Thread.run(Thread.java:1623)

JavaTest Message: Test threw exception: java.lang.Exception: JUnit test failure
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.Exception: JUnit test failure
----------rerun:(51/7707)*----------

With 6754 tests executed and a couple of lines per test, the
test output was truncated due to size. It appears that the
failing test happened in the truncated zone.