The following two tests failed in the JDK18 CI:

runtime/cds/appcds/methodHandles/MethodHandlesSpreadArgumentsTest.java
runtime/cds/appcds/methodHandles/MethodHandlesAsCollectorTest.java

Here's a snippet from the MethodHandlesSpreadArgumentsTest.java
log file:

----------System.err:(76/5001)----------
 stdout: [[0.016s][warning][gc,init] Consider setting -Xms equal to -Xmx to avoid resizing hiccups
[0.016s][warning][gc,init] Consider enabling -XX:+AlwaysPreTouch to avoid memory commit hiccups
class test.java.lang.invoke.MethodHandlesSpreadArgumentsTest
     annotation: @org.junit.Test(timeout=0L, expected=org.junit.Test$None.class)
    invoking method: testSpreadArguments
Terminating due to java.lang.OutOfMemoryError: Java heap space
];
 stderr: []
 exitValue = 3


Here's a snippet from the MethodHandlesAsCollectorTest.java
log file:

----------System.err:(76/4973)----------
 stdout: [[0.019s][warning][gc,init] Consider setting -Xms equal to -Xmx to avoid resizing hiccups
[0.019s][warning][gc,init] Consider enabling -XX:+AlwaysPreTouch to avoid memory commit hiccups
class test.java.lang.invoke.MethodHandlesAsCollectorTest
     annotation: @org.junit.Test(timeout=0L, expected=org.junit.Test$None.class)
    invoking method: testAsCollector
Terminating due to java.lang.OutOfMemoryError: Java heap space
];
 stderr: []
 exitValue = 3