$ CONF=linux-x86_64-server-fastdebug make images run-test TEST=vmTestbase/nsk/jvmti/GarbageCollectionStart/gcstart001/TestDescription.java TEST_VM_OPTS="-XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC"

Times out, yet makes lots of GCs:

506.774s][info][gc] GC(11226) Cannot finish degeneration, upgrading to Full GC
[506.802s][info][gc] GC(11226) Pause Degenerated GC (Outside of Cycle) 3367M->3367M(3858M) 49.944ms
[506.803s][info][gc] Failed to allocate 10864B
[506.803s][info][gc] Cancelling GC: Allocation Failure
[506.803s][info][gc] Trigger: Handle Allocation Failure
[506.830s][info][gc] GC(11227) Cancelling GC: Allocation Failure During Evacuation
[506.831s][info][gc] GC(11227) Cannot finish degeneration, upgrading to Full GC
[506.858s][info][gc] GC(11227) Pause Degenerated GC (Outside of Cycle) 3367M->3367M(3858M) 54.403ms
[506.858s][info][gc] Failed to allocate 8064B
[506.858s][info][gc] Cancelling GC: Allocation Failure
[506.859s][info][gc] Trigger: Handle Allocation Failure
[506.883s][info][gc] GC(11228) Cancelling GC: Allocation Failure During Evacuation
[506.885s][info][gc] GC(11228) Cannot finish degeneration, upgrading to Full GC
[506.913s][info][gc] GC(11228) Pause Degenerated GC (Outside of Cycle) 3367M->3367M(3858M) 54.056ms
[506.913s][info][gc] Failed to allocate 8064B
[506.913s][info][gc] Cancelling GC: Allocation Failure
[506.914s][info][gc] Trigger: Handle Allocation Failure
[506.938s][info][gc] GC(11229) Cancelling GC: Allocation Failure During Evacuation
[506.939s][info][gc] GC(11229) Cannot finish degeneration, upgrading to Full GC