The following test failed in the JDK15 CI:

tools/jpackage/share/jdk/jpackage/tests/BasicTest.java

Here's a snippet from the log file:

[ OK ] BasicTest.testHelp; checks=5
[ RUN ] BasicTest.testJLinkRuntime(Hello)
TRACE: jlink output BEGIN
[ FAILED ] BasicTest.testJLinkRuntime(Hello); checks=0
[ RUN ] BasicTest.testJLinkRuntime(com.foo/com.foo.main.Aloha)
TRACE: Create [/opt/mach5/mesos/work_dir/slaves/4728e7c1-7e67-490e-be0f-6bbf2a2f33db-S49/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/daa23f96-9441-47de-a9ed-28880b25b730/runs/12357f88-afa0-4221-9a40-0897db5dae98/testoutput/test-support/jtreg_open_test_jdk_tier2_part2/scratch/2/testJLinkRuntime.4704dd02/src/module-info.java] text file...
TRACE: module com.foo {
TRACE: exports com.foo.main;
TRACE: requires java.desktop;
TRACE: }
TRACE: Done
TRACE: exec: Execute tool provider [javac -d ./testJLinkRuntime.4704dd02/jar-workdir ./testJLinkRuntime.4704dd02/src/com/foo/main/Aloha.java ./testJLinkRuntime.4704dd02/src/module-info.java](5)...
TRACE: exec: Done. Exit code: 0
TRACE: assertEquals(0): Check command tool provider [javac -d ./testJLinkRuntime.4704dd02/jar-workdir ./testJLinkRuntime.4704dd02/src/com/foo/main/Aloha.java ./testJLinkRuntime.4704dd02/src/module-info.java](5) exited with 0 code
TRACE: exec: Execute tool provider [jar -c -f ./testJLinkRuntime.4704dd02/input-modules/hello.jar -C ./testJLinkRuntime.4704dd02/jar-workdir .](7)...
TRACE: exec: Done. Exit code: 0
TRACE: assertEquals(0): Check command tool provider [jar -c -f ./testJLinkRuntime.4704dd02/input-modules/hello.jar -C ./testJLinkRuntime.4704dd02/jar-workdir .](7) exited with 0 code
TRACE: jlink output BEGIN
[ FAILED ] BasicTest.testJLinkRuntime(com.foo/com.foo.main.Aloha); checks=2
[ RUN ] BasicTest.testNoArgs


So it looks like two sub-tests failed:

    BasicTest.testJLinkRuntime(Hello)
    BasicTest.testJLinkRuntime(com.foo/com.foo.main.Aloha)

Since this is a Tier2 failure, I would normally start this
bug off at P3. However these package failures are
typically intermittent so I'll go with P4 for now.