Failed

org.eclipse.mat.tests.collect.ExtractCollectionEntriesTest3.testCollections[org.eclipse.mat.hprof.acquire.JMapHeapDumpProvider acquire_dump_1.hprof 2 java.lang.ProcessEnvironment$StringKeySet] (from org.eclipse.mat.tests.AllTests)

Failing for the past 2 builds (Since #875 )

Error Message

java.lang.ProcessEnvironment$StringKeySet @ 0xf20479d0: hash set should contain Strings
Expected: "java.lang.String"
     but: was "java.lang.ProcessEnvironment$Variable"

Stacktrace

java.lang.AssertionError: java.lang.ProcessEnvironment$StringKeySet @ 0xf20479d0: hash set should contain Strings
Expected: "java.lang.String"
     but: was "java.lang.ProcessEnvironment$Variable"
	at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
	at org.junit.Assert.assertThat(Assert.java:956)
	at org.junit.rules.ErrorCollector$1.call(ErrorCollector.java:65)
	at org.junit.rules.ErrorCollector.checkSucceeds(ErrorCollector.java:78)
	at org.junit.rules.ErrorCollector.checkThat(ErrorCollector.java:63)
	at org.eclipse.mat.tests.collect.ExtractCollectionEntriesBase.checkHashSetObjects(ExtractCollectionEntriesBase.java:152)
	at org.eclipse.mat.tests.collect.ExtractCollectionEntriesTest2.testCollections2(ExtractCollectionEntriesTest2.java:173)
	at org.eclipse.mat.tests.collect.ExtractCollectionEntriesTest3.testCollections(ExtractCollectionEntriesTest3.java:229)