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java.lang.OutOfMemoryError: Java heap space	at java.util.Arrays.copyOfRange(	at java.lang.String.init(	at java.lang.StringBuilder.toString(	at net.sourceforge.retriever.fetcher.HTTPFetcher.getInnerURLs(Unknown Source)	at net.sourceforge.retriever.fetcher.Fetcher.fetch(Unknown Source)	at Source)	at net.sourceforge.retriever.ThreadPool$ Source)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(	at java.util.concurrent.ThreadPoolExecutor$	at