Im running warnings v1.5 and ran it on the java project Mockito. The warnings
plugin displays the following package list for a build
(http://hudson.ramfelt.se/job/Mockito/110/warningsResult/):

Package Total
org.mockitousage.stubbing 7
org.mockitousage.misuse 1
org.mockitousage.verification 2
n/a 7

When I click on the "n/a" package, I get a 500 on page
http://hudson.ramfelt.se/job/Mockito/110/warningsResult/package.n/a/

java.util.NoSuchElementException: Package not found: n
at
hudson.plugins.warnings.util.model.AnnotationContainer.getPackage(AnnotationContainer.java:489)
at hudson.plugins.warnings.util.DetailBuilder.createDetails(DetailBuilder.java:78)
at
hudson.plugins.warnings.util.DetailBuilder.createTrendDetails(DetailBuilder.java:52)
at hudson.plugins.warnings.WarningsResult.getDynamic(WarningsResult.java:456)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:103)