Package jackson appears to be using Java generics, but generates class files in format older than 49.0, which corresponds to J2SE 5.0, in which generics were introduced. Please update this package to generate classes in format 49.0 or above. This corresponds to -target 1.5 option of javac (or ecj). For more information, see bug #842394
Actually the Jackson package generates format 49.0. The problem is that the build process bundles the classes from /usr/share/java/objectweb-asm/asm.jar, which are part of package objectweb-asm, and that package generates format 46.0. I will remove this bundling from the jackson package.
The fix for the bundling issue is fixed and the modified package built: http://koji.fedoraproject.org/koji/taskinfo?taskID=4325235 Should we push this to Fedora 17 as well? In my opinion it is not worth.
> Should we push this to Fedora 17 as well? In my opinion it is not worth. There's no need for that.
Fixed in jackson-1.9.4-5