Since the hudson.maven.* classes were moved to the separate maven-plugin,
JavaNCSS (and a number of other plugins with similar code) have stopped working
when the job is run on a slave. I'll attach the exception stack I got from a job
that does nothing but report on JavaNCSS, using report files that worked in a
build run with Hudson core 1.293. I think the problem is
hudson.plugin.helpers.BuildCallableProxyHelper, at least in JavaNCSS. In any
case, this is blocking upgrading Hudson core to 1.300 (I think the problem first
happens with 1.296, but it's 1.300 I'm testing against).