Updated Task Scanner Plug-in to version 4.12 and Static Analysis Utilities to version 1.15.

After this there were some errors in our metrics job in Hudson (none of the graphs worked), so I cleared the workspace and build the job again. After this the Task Scanner fails with the following message:

[TASKS] Scanning workspace files for tasks...
FATAL: com.google.common.collect.ImmutableList.copyOf(Ljava/util/Collection;)Lcom/google/common/collect/ImmutableList;
java.lang.NoSuchMethodError: com.google.common.collect.ImmutableList.copyOf(Ljava/util/Collection;)Lcom/google/common/collect/ImmutableList;
at hudson.plugins.analysis.core.ParserResult.getErrorMessages(ParserResult.java:290)
at hudson.plugins.analysis.core.BuildResult.initialize(BuildResult.java:240)
at hudson.plugins.analysis.core.BuildResult.<init>(BuildResult.java:206)
at hudson.plugins.tasks.TasksResult.<init>(TasksResult.java:56)
at hudson.plugins.tasks.TasksPublisher.perform(TasksPublisher.java:201)
at hudson.plugins.analysis.core.HealthAwarePublisher.perform(HealthAwarePublisher.java:280)
at hudson.tasks.BuildStepMonitor$2.perform(BuildStepMonitor.java:27)
at hudson.model.AbstractBuild$AbstractRunner.perform(AbstractBuild.java:601)
at hudson.model.AbstractBuild$AbstractRunner.performAllBuildSteps(AbstractBuild.java:580)
at hudson.model.AbstractBuild$AbstractRunner.performAllBuildSteps(AbstractBuild.java:558)
at hudson.model.Build$RunnerImpl.post2(Build.java:158)
at hudson.model.AbstractBuild$AbstractRunner.post(AbstractBuild.java:528)
at hudson.model.Run.run(Run.java:1276)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:124)