I am trigerring sonar from jenkins, which is completing sucessfully.
016.02.05 12:28:52 ERROR [o.s.s.c.t.CeWorkerRunnableImpl] Failed to execute task AVKxZzs3XOSwYL28ZL1g
java.lang.NullPointerException: null key in entry: null=org.sonar.server.computation.sqale.SqaleRatingSettings$LanguageSpecificConfiguration@1a17df9
at com.google.common.collect.CollectPreconditions.checkEntryNotNull(CollectPreconditions.java:31) ~[guava-17.0.jar:na]
at com.google.common.collect.ImmutableMap.entryOf(ImmutableMap.java:135) ~[guava-17.0.jar:na]
at com.google.common.collect.ImmutableMap$Builder.put(ImmutableMap.java:206) ~[guava-17.0.jar:na]
at org.sonar.server.computation.sqale.SqaleRatingSettings.buildLanguageSpecificConfigurationByLanguageKey(SqaleRatingSettings.java:54) ~[sonar-server-5.2.jar:na]
at org.sonar.server.computation.sqale.SqaleRatingSettings.<init>(SqaleRatingSettings.java:46) ~[sonar-server-5.2.jar:na]
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_60]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) ~[na:1.8.0_60]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) ~[na:1.8.0_60]
at java.lang.reflect.Constructor.newInstance(Unknown Source) ~[na:1.8.0_60]
at org.picocontainer.injectors.AbstractInjector.newInstance(AbstractInjector.java:145) ~[picocontainer-2.15.jar:na]
at org.picocontainer.injectors.ConstructorInjector$1.run(ConstructorInjector.java:342) ~[picocontainer-2.15.jar:na]
at org.picocontainer.injectors.AbstractInjector$ThreadLocalCyclicDependencyGuard.observe(AbstractInjector.java:270) ~[picocontainer-2.15.jar:na]
at org.picocontainer.injectors.ConstructorInjector.getComponentInstance(ConstructorInjector.java:364) ~[picocontainer-2.15.jar:na]
at org.picocontainer.injectors.AbstractInjectionFactory$LifecycleAdapter.getComponentInstance(AbstractInjectionFactory.java:56) ~[picocontainer-2.15.jar:na]
at org.picocontainer.behaviors.AbstractBehavior.getComponentInstance(AbstractBehavior.java:64) ~[picocontainer-2.15.jar:na]
at org.picocontainer.behaviors.Stored.getComponentInstance(Stored.java:91) ~[picocontainer-2.15.jar:na]
at org.picocontainer.DefaultPicoContainer.getInstance(DefaultPicoContainer.java:699) ~[picocontainer-2.15.jar:na]
at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:647) ~[picocontainer-2.15.jar:na]
at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:632) ~[picocontainer-2.15.jar:na]