OldDataMonitorTest.robustness consistently passes for me locally, but has been...

OldDataMonitorTest.robustness consistently passes for me locally, but has been causing trouble in CI. Suppressing for now.

test/src/test/java/hudson/diagnosis/OldDataMonitorTest.java

@@ -31,12 +31,12 @@ import java.lang.ref.WeakReference;
 import java.util.Collections;
 import jenkins.model.lazy.BuildReference;
 import static org.junit.Assert.*;
+import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.jvnet.hudson.test.Bug;
 import org.jvnet.hudson.test.JenkinsRule;
 import org.jvnet.hudson.test.MemoryAssert;
-import org.jvnet.hudson.test.RandomlyFails;
 import org.jvnet.hudson.test.recipes.LocalData;
 
 public class OldDataMonitorTest {
@@ -48,6 +48,7 @@ public class OldDataMonitorTest {
 
     @Rule public JenkinsRule r = new JenkinsRule();
 
+    @Ignore("constantly failing on CI builders, makes problems for memory()")
     @Bug(19544)
     @LocalData
     @Test public void robustness() throws Exception {
@@ -68,7 +69,6 @@ public class OldDataMonitorTest {
         // did not manage to save p, but at least we are not holding onto a reference to it anymore
     }
 
-    @RandomlyFails("actually it is robustness() that is claimed to fail, with an InterruptedException in before(), perhaps because memory() took many minutes to run")
     @Bug(19544)
     @Test public void memory() throws Exception {
         FreeStyleProject p = r.createFreeStyleProject("p");