18:20:33 launcher Preparing to launch minecraft client for 1.10.2
18:20:33 launcher Checking installations.
18:20:33 launcher Minecraft client 1.10.2 is ready to start.
18:20:33 launcher Starting!
18:20:33 launcher Using default game log configuration client-1.7.xml (outputs XML)
18:20:34 launcher Process closed with exit code 1
18:20:34 launcher Exception in thread "main" java.lang.ExceptionInInitializerError
at org.apache.logging.log4j.util.PropertiesUtil.<init>(PropertiesUtil.java:71)
at org.apache.logging.log4j.util.PropertiesUtil.<clinit>(PropertiesUtil.java:31)
at org.apache.logging.log4j.status.StatusLogger.<clinit>(StatusLogger.java:48)
at org.apache.logging.log4j.LogManager.<clinit>(LogManager.java:44)
at bcx.<clinit>(SourceFile:210)
at net.minecraft.client.main.Main.main(SourceFile:39)
Caused by: java.lang.NullPointerException
at org.apache.logging.log4j.util.ProviderUtil.<clinit>(ProviderUtil.java:70)
... 6 more
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

http://paste.ubuntu.com/24270675/