The following test failed in the JDK16 CI:

tools/jpackage/share/EmptyFolderPackageTest.java

Here's a snippet from the log file:

2020-06-24 13:43:50.251 diskimages-helper[77807:108465883] DIHelperHDID serveImage: connecting to myDrive 0x3C17
2020-06-24 13:43:50.251 diskimages-helper[77807:108465883] DIHelperHDID serveImage: register _readBuffer 0x113bdf000
2020-06-24 13:43:50.251 diskimages-helper[77807:108465883] DIHelperHDID serveImage: activating drive port 15115
2020-06-24 13:43:50.251 diskimages-helper[77807:108465883] DIHelperHDID serveImage: set cache enabled=TRUE returned FAILURE.
2020-06-24 13:43:51.047 diskimages-helper[77807:108465883] DIHelperHDID serveImage: set on IO thread=TRUE returned SUCCESS.
2020-06-24 13:43:51.047 diskimages-helper[77807:108465883] -processKernelRequest: will sleep received
Mounting?
2020-06-24 13:43:59.641 diskimages-helper[77807:108465881] _mountDevEntries: disk4s1 aborting mountpoint postflight because disk image has no band size specified.
Finishing?
Finishing?
/dev/disk4 GUID_partition_scheme
/dev/disk4s1 Apple_HFS /private/var/folders/jn/3j5zlmnj4zs5tlhls80bv42r000_dc/T/jdk.incubator.jpackage1962945015785689894/images/EmptyFolderPackageTest
Running [osascript, /var/folders/jn/3j5zlmnj4zs5tlhls80bv42r000_dc/T/jdk.incubator.jpackage1962945015785689894/config/EmptyFolderPackageTest-dmg-setup.scpt]
Timeout refired 480 times
java.io.IOException: Command [osascript, /var/folders/jn/3j5zlmnj4zs5tlhls80bv42r000_dc/T/jdk.incubator.jpackage1962945015785689894/config/EmptyFolderPackageTest-dmg-setup.scpt] exited with 134 code
at jdk.incubator.jpackage/jdk.incubator.jpackage.internal.Executor.executeExpectSuccess(Executor.java:75)
at jdk.incubator.jpackage/jdk.incubator.jpackage.internal.IOUtils.exec(IOUtils.java:167)
at jdk.incubator.jpackage/jdk.incubator.jpackage.internal.IOUtils.exec(IOUtils.java:135)
at jdk.incubator.jpackage/jdk.incubator.jpackage.internal.MacDmgBundler.buildDMG(MacDmgBundler.java:351)
at jdk.incubator.jpackage/jdk.incubator.jpackage.internal.MacDmgBundler.bundle(MacDmgBundler.java:91)
at jdk.incubator.jpackage/jdk.incubator.jpackage.internal.MacDmgBundler.execute(MacDmgBundler.java:493)
at jdk.incubator.jpackage/jdk.incubator.jpackage.internal.Arguments.generateBundle(Arguments.java:680)
at jdk.incubator.jpackage/jdk.incubator.jpackage.internal.Arguments.processArguments(Arguments.java:549)
at jdk.incubator.jpackage/jdk.incubator.jpackage.main.Main.execute(Main.java:98)
at jdk.incubator.jpackage/jdk.incubator.jpackage.main.Main.main(Main.java:52)
Running [/usr/bin/SetFile, -c, icnC, /var/folders/jn/3j5zlmnj4zs5tlhls80bv42r000_dc/T/jdk.incubator.jpackage1962945015785689894/images/EmptyFolderPackageTest/.VolumeIcon.icns]
Running [/usr/bin/SetFile, -a, C, /var/folders/jn/3j5zlmnj4zs5tlhls80bv42r000_dc/T/jdk.incubator.jpackage1962945015785689894/images/EmptyFolderPackageTest]
Running [/usr/bin/hdiutil, detach, -force, -verbose, /var/folders/jn/3j5zlmnj4zs5tlhls80bv42r000_dc/T/jdk.incubator.jpackage1962945015785689894/images/EmptyFolderPackageTest]
hdiutil: detach: processing "/var/folders/jn/3j5zlmnj4zs5tlhls80bv42r000_dc/T/jdk.incubator.jpackage1962945015785689894/images/EmptyFolderPackageTest"
LetDIDriverSettleDown: calling IOServiceWaitQuiet...
DI_kextWaitQuiet: about to call IOServiceWaitQuiet...
DI_kextWaitQuiet: IOServiceWaitQuiet took 0.130713 seconds
LetDiskImageDriverSettleDown: wait took 0.130814 seconds
"disk4" unmounted.
"disk4" ejected.
Running [/usr/bin/hdiutil, convert, /var/folders/jn/3j5zlmnj4zs5tlhls80bv42r000_dc/T/jdk.incubator.jpackage1962945015785689894/images/EmptyFolderPackageTest-tmp.dmg, -verbose, -format, UDZO, -o, /mesos/work_dir/slaves/63712a43-4eaa-429c-95b4-483ac8241123-S1001/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/cdecf046-d409-42ab-aed4-3fdd17674733/runs/fdfd1772-8df7-4f96-a116-2b86bd25deb3/testoutput/test-support/jtreg_open_test_jdk_tier2_part2/scratch/5/./output/EmptyFolderPackageTest-1.0.dmg]
----------System.err:(3/171)----------