java.lang.OutOfMemoryError: Java heap space
   at java.util.zip.ZipCoder.toString(ZipCoder.java:49)
   at java.util.zip.ZipFile.getZipEntry(ZipFile.java:567)
   at java.util.zip.ZipFile.access$900(ZipFile.java:61)
   at java.util.zip.ZipFile$ZipEntryIterator.next(ZipFile.java:525)
   at java.util.zip.ZipFile$ZipEntryIterator.nextElement(ZipFile.java:500)
   at java.util.zip.ZipFile$ZipEntryIterator.nextElement(ZipFile.java:481)
   at scala.reflect.io.FileZipArchive.x$1$lzycompute(FileZipArchive.java:135)
   at scala.reflect.io.FileZipArchive.x$1(FileZipArchive.java:123)
   at scala.reflect.io.FileZipArchive.root$lzycompute(FileZipArchive.java:123)
   at scala.reflect.io.FileZipArchive.root(FileZipArchive.java:123)
   at scala.reflect.io.FileZipArchive.iterator(FileZipArchive.java:152)
   at scala.collection.IterableLike$class.foreach(IterableLike.java:72)
   at scala.reflect.io.AbstractFile.foreach(AbstractFile.java:91)
   at scala.tools.nsc.util.DirectoryClassPath.traverse(DirectoryClassPath.java:277)
   at scala.tools.nsc.util.DirectoryClassPath.x$15$lzycompute(DirectoryClassPath.java:299)
   at scala.tools.nsc.util.DirectoryClassPath.x$15(DirectoryClassPath.java:299)
   at scala.tools.nsc.util.DirectoryClassPath.packages$lzycompute(DirectoryClassPath.java:299)
   at scala.tools.nsc.util.DirectoryClassPath.packages(DirectoryClassPath.java:299)
   at scala.tools.nsc.util.DirectoryClassPath.packages(DirectoryClassPath.java:264)
   at scala.tools.nsc.util.MergedClassPath$$anonfun$packages$1.apply(MergedClassPath.java:358)
   at scala.tools.nsc.util.MergedClassPath$$anonfun$packages$1.apply(MergedClassPath.java:358)
   at scala.collection.Iterator$class.foreach(Iterator.java:750)
   at scala.collection.AbstractIterator.foreach(AbstractIterator.java:1202)
   at scala.collection.IterableLike$class.foreach(IterableLike.java:72)
   at scala.collection.AbstractIterable.foreach(AbstractIterable.java:54)
   at scala.tools.nsc.util.MergedClassPath.packages$lzycompute(MergedClassPath.java:358)
   at scala.tools.nsc.util.MergedClassPath.packages(MergedClassPath.java:353)
   at scala.tools.nsc.symtab.SymbolLoaders$PackageLoader$$anonfun$doComplete$1.apply$mcV$sp(SymbolLoaders.java:270)
   at scala.tools.nsc.symtab.SymbolLoaders$PackageLoader$$anonfun$doComplete$1.apply(SymbolLoaders.java:261)
   at scala.tools.nsc.symtab.SymbolLoaders$PackageLoader$$anonfun$doComplete$1.apply(SymbolLoaders.java:261)
   at scala.reflect.internal.SymbolTable.enteringPhase(SymbolTable.java:235)
   at scala.tools.nsc.symtab.SymbolLoaders$PackageLoader.doComplete(SymbolLoaders.java:261)