[21:26:05.638] Running /usr/bin/osascript
[21:28:05.823] Command [PID: 12994]:
    /usr/bin/osascript /var/folders/ls/7bs2qycn2x99nsc8pm6r41640000gr/T/jdk.jpackage749158140743818967/config/bug8230933AddLauncherTest-dmg-setup.scpt
[21:28:05.823] Output:
    /var/folders/ls/7bs2qycn2x99nsc8pm6r41640000gr/T/jdk.jpackage749158140743818967/config/bug8230933AddLauncherTest-dmg-setup.scpt:443:485: execution error: Finder got an error: AppleEvent timed out. (-1712)
[21:28:05.823] Returned: 1

[21:28:05.824] java.io.IOException: Command [/usr/bin/osascript, /var/folders/ls/7bs2qycn2x99nsc8pm6r41640000gr/T/jdk.jpackage749158140743818967/config/bug8230933AddLauncherTest-dmg-setup.scpt] exited with 1 code
at jdk.jpackage/jdk.jpackage.internal.Executor.executeExpectSuccess(Executor.java:90)
at jdk.jpackage/jdk.jpackage.internal.IOUtils.exec(IOUtils.java:126)
at jdk.jpackage/jdk.jpackage.internal.IOUtils.exec(IOUtils.java:104)
at jdk.jpackage/jdk.jpackage.internal.IOUtils.exec(IOUtils.java:83)
at jdk.jpackage/jdk.jpackage.internal.MacDmgPackager.buildDMG(MacDmgPackager.java:306)
at jdk.jpackage/jdk.jpackage.internal.PackagingPipeline$DefaultTaskContext.execute(PackagingPipeline.java:606)
at jdk.jpackage/jdk.jpackage.internal.MacPackagingPipeline$TaskContextProxy.execute(MacPackagingPipeline.java:595)
at jdk.jpackage/jdk.jpackage.internal.PackagingPipeline.lambda$createTask$0(PackagingPipeline.java:634)
at jdk.jpackage/jdk.jpackage.internal.pipeline.TaskPipelineBuilder$SequentialWrapperTask.call(TaskPipelineBuilder.java:130)
at jdk.jpackage/jdk.jpackage.internal.pipeline.TaskPipelineBuilder$SequentialWrapperTask.call(TaskPipelineBuilder.java:121)
at jdk.jpackage/jdk.jpackage.internal.PackagingPipeline.execute(PackagingPipeline.java:506)
at jdk.jpackage/jdk.jpackage.internal.PackagingPipeline.execute(PackagingPipeline.java:95)
at jdk.jpackage/jdk.jpackage.internal.Packager.execute(Packager.java:85)
at jdk.jpackage/jdk.jpackage.internal.MacDmgBundler.execute(MacDmgBundler.java:84)
at jdk.jpackage/jdk.jpackage.internal.Arguments.executeBundler(Arguments.java:760)
at jdk.jpackage/jdk.jpackage.internal.Arguments.generateBundle(Arguments.java:721)
at jdk.jpackage/jdk.jpackage.internal.Arguments.processArguments(Arguments.java:572)
at jdk.jpackage/jdk.jpackage.main.Main.execute(Main.java:93)
at jdk.jpackage/jdk.jpackage.main.Main.main(Main.java:54)

...
[21:28:10.169] Succeeded in building Mac DMG Package package
[21:28:10.239] TRACE: exec: Done. Exit code: 0
[21:28:10.240] TRACE: assertEquals(0): Check command [/System/Volumes/Data/mesos/work_dir/jib-master/install/jdk-26+18-1823/macosx-aarch64.jdk/jdk-26.jdk/Contents/Home/bin/jpackage --input bug8230933/input --dest bug8230933/output --name bug8230933AddLauncherTest --type dmg --main-jar hello.jar --main-class Hello --add-launcher default_icon=bug8230933/default_icon.properties --add-launcher no_icon=bug8230933/no_icon.properties --add-launcher custom_icon=bug8230933/custom_icon.properties -J-Djlink.debug=true --verbose](21) exited with 0 code
[21:28:10.241] TRACE: assertTrue(): Check [bug8230933/output/bug8230933AddLauncherTest-1.0.dmg] path exists
[21:28:10.241] TRACE: assertTrue(): Check [bug8230933/output/bug8230933AddLauncherTest-1.0.dmg] is a file
[21:28:14.318] [ FAILED ] AddLauncherTest.bug8230933; checks=5

Interestingly the screen image shows only a background picture with no apparent Finder windows/menus etc visible - as if Finder had crashed.