technomancy/leiningen — pull request #1584 by MichaelBlume (2014-07-02 23:17:50+00:00)
Title: when opening a JarFile, report name of file in any errors

java.util.JarFile. can fail without reporting the name of the file it's
operating on. If you have a jarfile that isn't a valid zip, this can be
confusing.