When I execute the tests suite I'm getting this error, not always and the tests doesn't fail. But is weird java.lang.NullPointerException: Inflater has been closed at java.util.zip.Inflater.ensureOpen ...

Caused by: java.lang.NullPointerException at org.eclipse.equinox.internal.p2.artifact.repository.simple.SimpleArtifactRepository.downloadArtifact (SimpleArtifactRepository.java:666) ...

Java VM Version: Java HotSpot (TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 920088352 bytes (877 MB) / 1073741824 bytes (1024 MB) up to 2147483648 bytes (2048 MB) ...