ADDITIONAL SYSTEM INFORMATION :
javac full version "11-ea+25"
Windows 10 Version 1803

A DESCRIPTION OF THE PROBLEM :
When invoking javac with "--release 9 -Xlint:all", cryptic warning messages are printed. For "10", the same is true. With "8" and "11", the warning messages are not printed.

If "-Werror" is used, this fails the compilation, but the warning messages give no clue about what causes them, nor how to resolve them.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
* save the source code to a Test.java
* run javac.exe Test.java --release 9 -Xlint:all

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No output
ACTUAL -
/879A/java/lang/management/OperatingSystemMXBean.sig: warning: Cannot find annotation method 'value()' in type 'Profile+Annotation': class file for jdk.Profile+Annotation not found
/879A/java/lang/management/PlatformManagedObject.sig: warning: Cannot find annotation method 'value()' in type 'Profile+Annotation'
/879/java/lang/management/RuntimeMXBean.sig: warning: Cannot find annotation method 'value()' in type 'Profile+Annotation'
/879A/java/lang/management/MemoryMXBean.sig: warning: Cannot find annotation method 'value()' in type 'Profile+Annotation'
/879/java/lang/management/ThreadMXBean.sig: warning: Cannot find annotation method 'value()' in type 'Profile+Annotation'
/8769A/javax/script/ScriptEngineFactory.sig: warning: Cannot find annotation method 'value()' in type 'Profile+Annotation': class file for jdk.Profile+Annotation not found
6 warnings

---------- BEGIN SOURCE ----------
import java.lang.management.ManagementFactory;
import java.util.Arrays;
import javax.script.ScriptEngineManager;

public class Test {

    public static void main(String[] args) {
        System.out.println(ManagementFactory.getOperatingSystemMXBean().getName());
        System.out.println(ManagementFactory.getRuntimeMXBean().getUptime());
        System.out.println(ManagementFactory.getMemoryMXBean().getHeapMemoryUsage().getUsed());
        System.out.println(ManagementFactory.getMemoryMXBean().getNonHeapMemoryUsage().getUsed());
        System.out.println(Arrays.toString(ManagementFactory.getThreadMXBean().findDeadlockedThreads()));

        new ScriptEngineManager().getEngineFactories().stream().forEach(System.out::println);
    }

}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Don't use "-Werror", or use another release, e.g. 8 or 11

FREQUENCY : always