AdaptiveSchedulerClusterITCase failure due to MiniCluster not running

 Jan 29 17:21:29 17:21:29.465 [ERROR] Tests run: 3, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 12.48 s <<< FAILURE! -- in org.apache.flink.runtime.scheduler.adaptive.AdaptiveSchedulerClusterITCase
Jan 29 17:21:29 17:21:29.465 [ERROR] org.apache.flink.runtime.scheduler.adaptive.AdaptiveSchedulerClusterITCase.testAutomaticScaleUp -- Time elapsed: 8.599 s <<< ERROR!
Jan 29 17:21:29 java.lang.IllegalStateException: MiniCluster is not yet running or has already been shut down.
Jan 29 17:21:29 	at org.apache.flink.util.Preconditions.checkState(Preconditions.java:193)
Jan 29 17:21:29 	at org.apache.flink.runtime.minicluster.MiniCluster.getDispatcherGatewayFuture(MiniCluster.java:1118)
Jan 29 17:21:29 	at org.apache.flink.runtime.minicluster.MiniCluster.runDispatcherCommand(MiniCluster.java:991)
Jan 29 17:21:29 	at org.apache.flink.runtime.minicluster.MiniCluster.getArchivedExecutionGraph(MiniCluster.java:840)
Jan 29 17:21:29 	at org.apache.flink.runtime.scheduler.adaptive.AdaptiveSchedulerClusterITCase.lambda$waitUntilParallelismForVertexReached$3(AdaptiveSchedulerClusterITCase.java:270)
Jan 29 17:21:29 	at org.apache.flink.runtime.testutils.CommonTestUtils.waitUntilCondition(CommonTestUtils.java:151)
Jan 29 17:21:29 	at org.apache.flink.runtime.testutils.CommonTestUtils.waitUntilCondition(CommonTestUtils.java:145)
Jan 29 17:21:29 	at org.apache.flink.runtime.scheduler.adaptive.AdaptiveSchedulerClusterITCase.waitUntilParallelismForVertexReached(AdaptiveSchedulerClusterITCase.java:265)
Jan 29 17:21:29 	at org.apache.flink.runtime.scheduler.adaptive.AdaptiveSchedulerClusterITCase.testAutomaticScaleUp(AdaptiveSchedulerClusterITCase.java:146)
Jan 29 17:21:29 	at java.lang.reflect.Method.invoke(Method.java:498)
Jan 29 17:21:29 	at org.apache.flink.util.TestNameProvider$1.evaluate(TestNameProvider.java:45)
Jan 29 17:21:29 
Jan 29 17:21:29 17:21:29.466 [ERROR] org.apache.flink.runtime.scheduler.adaptive.AdaptiveSchedulerClusterITCase.testCheckpointStatsPersistedAcrossRescale -- Time elapsed: 2.036 s <<< ERROR!
Jan 29 17:21:29 java.lang.IllegalStateException: MiniCluster is not yet running or has already been shut down.
Jan 29 17:21:29 	at org.apache.flink.util.Preconditions.checkState(Preconditions.java:193)
Jan 29 17:21:29 	at org.apache.flink.runtime.minicluster.MiniCluster.getDispatcherGatewayFuture(MiniCluster.java:1118)
Jan 29 17:21:29 	at org.apache.flink.runtime.minicluster.MiniCluster.runDispatcherCommand(MiniCluster.java:991)
Jan 29 17:21:29 	at org.apache.flink.runtime.minicluster.MiniCluster.getExecutionGraph(MiniCluster.java:969)
Jan 29 17:21:29 	at org.apache.flink.runtime.scheduler.adaptive.AdaptiveSchedulerClusterITCase.lambda$testCheckpointStatsPersistedAcrossRescale$1(AdaptiveSchedulerClusterITCase.java:183)
Jan 29 17:21:29 	at org.apache.flink.runtime.testutils.CommonTestUtils.waitUntilCondition(CommonTestUtils.java:151)
Jan 29 17:21:29 	at org.apache.flink.runtime.testutils.CommonTestUtils.waitUntilCondition(CommonTestUtils.java:145)
Jan 29 17:21:29 	at org.apache.flink.runtime.scheduler.adaptive.AdaptiveSchedulerClusterITCase.testCheckpointStatsPersistedAcrossRescale(AdaptiveSchedulerClusterITCase.java:180)
Jan 29 17:21:29 	at java.lang.reflect.Method.invoke(Method.java:498)
Jan 29 17:21:29 	at org.apache.flink.util.TestNameProvider$1.evaluate(TestNameProvider.java:45)