The following test timed out in the JDK17 CI:

runtime/cds/appcds/loaderConstraints/DynamicLoaderConstraintsTest.java

Here's a snippet from the log file:

Command line: [/opt/mach5/mesos/work_dir/jib-master/install/jdk-17+25-2200/linux-x64-debug.jdk/jdk-17/fastdebug/bin/java -cp /opt/mach5/mesos/work_dir/slaves/a4f8fba9-f017-4328-b286-c66b6a97143d-S7258/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/608db9df-80e0-4acb-83d2-c1892b29a853/runs/3c195445-7980-442f-8aad-dc2bb1ae3e21/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/classes/2/runtime/cds/appcds/loaderConstraints/DynamicLoaderConstraintsTest.d:/opt/mach5/mesos/work_dir/jib-master/install/jdk-17+25-2200/src.full/open/test/hotspot/jtreg/runtime/cds/appcds/loaderConstraints:/opt/mach5/mesos/work_dir/slaves/a4f8fba9-f017-4328-b286-c66b6a97143d-S7258/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/608db9df-80e0-4acb-83d2-c1892b29a853/runs/3c195445-7980-442f-8aad-dc2bb1ae3e21/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/classes/2/test/lib:/opt/mach5/mesos/work_dir/jib-master/install/jdk-17+25-2200/src.full/open/test/lib:/opt/mach5/mesos/work_dir/slaves/a4f8fba9-f017-4328-b286-c66b6a97143d-S7258/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/608db9df-80e0-4acb-83d2-c1892b29a853/runs/3c195445-7980-442f-8aad-dc2bb1ae3e21/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/classes/2/test/hotspot/jtreg/runtime/cds/appcds:/opt/mach5/mesos/work_dir/jib-master/install/jdk-17+25-2200/src.full/open/test/hotspot/jtreg/runtime/cds/appcds:/opt/mach5/mesos/work_dir/slaves/a4f8fba9-f017-4328-b286-c66b6a97143d-S7258/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/608db9df-80e0-4acb-83d2-c1892b29a853/runs/3c195445-7980-442f-8aad-dc2bb1ae3e21/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/classes/2/test/hotspot/jtreg/runtime/cds/appcds/test-classes:/opt/mach5/mesos/work_dir/jib-master/install/jdk-17+25-2200/src.full/open/test/hotspot/jtreg/runtime/cds/appcds/test-classes:/opt/mach5/mesos/work_dir/slaves/a4f8fba9-f017-4328-b286-c66b6a97143d-S7258/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/608db9df-80e0-4acb-83d2-c1892b29a853/runs/3c195445-7980-442f-8aad-dc2bb1ae3e21/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/classes/2/test/hotspot/jtreg/runtime/cds/appcds/dynamicArchive:/opt/mach5/mesos/work_dir/jib-master/install/jdk-17+25-2200/src.full/open/test/hotspot/jtreg/runtime/cds/appcds/dynamicArchive:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/5.1/b01/bundles/jtreg_bin-5.1.zip/jtreg/lib/javatest.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/5.1/b01/bundles/jtreg_bin-5.1.zip/jtreg/lib/jtreg.jar -XX:MaxRAMPercentage=6.25 -Djava.io.tmpdir=/opt/mach5/mesos/work_dir/slaves/a4f8fba9-f017-4328-b286-c66b6a97143d-S7258/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/608db9df-80e0-4acb-83d2-c1892b29a853/runs/3c195445-7980-442f-8aad-dc2bb1ae3e21/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/tmp -Xcomp -XX:+CreateCoredumpOnCrash -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:+TieredCompilation -XX:+VerifyOops -Xshare:on -XX:SharedArchiveFile=/opt/mach5/mesos/work_dir/slaves/a4f8fba9-f017-4328-b286-c66b6a97143d-S7258/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/608db9df-80e0-4acb-83d2-c1892b29a853/runs/3c195445-7980-442f-8aad-dc2bb1ae3e21/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/scratch/2/appcds-15h45m41s387.jsa --add-modules java.base,jdk.httpserver --add-exports java.base/jdk.internal.misc=ALL-UNNAMED -Xlog:class+load,class+loader+constraints -cp /opt/mach5/mesos/work_dir/slaves/a4f8fba9-f017-4328-b286-c66b6a97143d-S7258/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/608db9df-80e0-4acb-83d2-c1892b29a853/runs/3c195445-7980-442f-8aad-dc2bb1ae3e21/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/scratch/2/custom_app_loader.jar CustomAppLoader /opt/mach5/mesos/work_dir/slaves/a4f8fba9-f017-4328-b286-c66b6a97143d-S7258/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/608db9df-80e0-4acb-83d2-c1892b29a853/runs/3c195445-7980-442f-8aad-dc2bb1ae3e21/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/scratch/2/loader_constraints.jar LoaderConstraintsApp 3 ]
[2021-05-29T15:46:38.188109900Z] Gathering output for process 1088999
Timeout refired 1200 times
[ELAPSED: 57150 ms]
[logging stdout to /opt/mach5/mesos/work_dir/slaves/a4f8fba9-f017-4328-b286-c66b6a97143d-S7258/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/608db9df-80e0-4acb-83d2-c1892b29a853/runs/3c195445-7980-442f-8aad-dc2bb1ae3e21/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/scratch/2/runtime.cds.appcds.loaderConstraints.DynamicLoaderConstraintsTest.java-0023-exec.stdout]
[logging stderr to /opt/mach5/mesos/work_dir/slaves/a4f8fba9-f017-4328-b286-c66b6a97143d-S7258/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/608db9df-80e0-4acb-83d2-c1892b29a853/runs/3c195445-7980-442f-8aad-dc2bb1ae3e21/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/scratch/2/runtime.cds.appcds.loaderConstraints.DynamicLoaderConstraintsTest.java-0023-exec.stderr]
[STDERR]

[2021-05-29T15:47:35.337395947Z] Waiting for completion for process 1088999
[2021-05-29T15:47:35.337418840Z] Waiting for completion finished for process 1088999
[2021-05-29T15:47:35.337425813Z] Waiting for completion for process 1088999
[2021-05-29T15:47:35.337431795Z] Waiting for completion finished for process 1088999
[2021-05-29T15:47:35.337438377Z] Waiting for completion for process 1088999
[2021-05-29T15:47:35.337443998Z] Waiting for completion finished for process 1088999
----------System.err:(1/15)----------
STATUS:Passed.
----------rerun:(49/11574)*----------

<snip>

result: Error. Program `/opt/mach5/mesos/work_dir/jib-master/install/jdk-17+25-2200/linux-x64-debug.jdk/jdk-17/fastdebug/bin/java' timed out (timeout set to 1200000ms, elapsed time including timeout handling was 1245966ms).