MetricsPusherTest.pushesSystemMetrics is failing on non-portability FlinkRunner

java.lang.AssertionError: 
Expected: is <false>
     but: was <true>
	at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
	at org.junit.Assert.assertThat(Assert.java:966)
	at org.junit.Assert.assertThat(Assert.java:931)
	at org.apache.beam.runners.core.metrics.MetricsPusherTest.pushesSystemMetrics(MetricsPusherTest.java:89)

    assertThat(TestMetricsSink.getSystemCounters().isEmpty(), is(false));