the error that appear in console

java.lang.OutOfMemoryError: Java heap space
2015-07-24 18:11:16.330 Dumping heap to /temp/dump.hprof ...
2015-07-24 18:11:19.200 Heap dump file created [473449760 bytes in 2.848 secs]
2015-07-24 18:11:19.202 Exception in thread "ThreadedStreamConsumer" java.lang.OutOfMemoryError: Java heap space
2015-07-24 18:11:19.202 at java.util.Arrays.copyOf(Arrays.java:2367)
2015-07-24 18:11:19.202 at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:130)
2015-07-24 18:11:19.202 at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:114)
2015-07-24 18:11:19.202 at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:415)
2015-07-24 18:11:19.202 at java.lang.StringBuilder.append(StringBuilder.java:132)
2015-07-24 18:11:19.202 at org.apache.maven.plugin.surefire.report.TestSetRunListener.getAsString(TestSetRunListener.java:223)
2015-07-24 18:11:19.202 at org.apache.maven.plugin.surefire.report.TestSetRunListener.wrap(TestSetRunListener.java:230)
2015-07-24 18:11:19.202 at org.apache.maven.plugin.surefire.report.TestSetRunListener.testSucceeded(TestSetRunListener.java:161)
2015-07-24 18:11:19.202 at org.apache.maven.plugin.surefire.booterclient.output.ForkClient.consumeLine(ForkClient.java:100)
2015-07-24 18:11:19.202 at org.apache.maven.plugin.surefire.booterclient.output.ThreadedStreamConsumer$Pumper.run(ThreadedStreamConsumer.java:67)
2015-07-24 18:11:19.202 at java.lang.Thread.run(Thread.java:745)
2015-07-24 18:11:19.203
2015-07-24 18:11:19.203 Results :

attached heap dump