Test cases: gc/z/TestHighUsage.java
OS: Linux-aarch64-debug
Where: 18u-cpu CI build
Is it a regression: NO (intermittent failure, no history of past failure in Mach5)

Free: 12M (Allocating)
[108.475s][info][gc,start] GC(89) Garbage Collection (Allocation Rate)
Free: 10M (Allocating)
Done
[109.205s][info][gc ] GC(89) Garbage Collection (Allocation Rate) Aborted
];
 stderr: []
 exitValue = 0

java.lang.RuntimeException: 'High Usage' missing from stdout/stderr

at jdk.test.lib.process.OutputAnalyzer.shouldContain(OutputAnalyzer.java:221)
at gc.z.TestHighUsage.main(TestHighUsage.java:97)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:833)

JavaTest Message: Test threw exception: java.lang.RuntimeException: 'High Usage' missing from stdout/stderr

JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: 'High Usage' missing from stdout/stderr