The following test fails in the JDK16 CI:

tools/jlink/JLinkReproducible3Test.java

Here's a snippet from the log file:

----------System.err:(12/811)----------
java.lang.RuntimeException: jlink producing inconsistent result in modules. Mismatch in modules file occurred at byte position 394681
at JLinkReproducible3Test.main(JLinkReproducible3Test.java:81)
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.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:298)
at java.base/java.lang.Thread.run(Thread.java:832)

JavaTest Message: Test threw exception: java.lang.RuntimeException
JavaTest Message: shutting down test

result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: jlink producing inconsistent result in modules. Mismatch in modules file occurred at byte position 394681

Starting this bug as a P3 since this is a Tier2 failure.

tools/jlink/JLinkReproducible3Test.java is a new start
that was integrated with this fix:

    JDK-8252730 jlink does not create reproducible builds on different servers