 <p>the warnings are caused by the maven tar archiver. By default, it warns for tar entries with path length > 100 chars. Considering this is an ancient tar format limitation, I changed the default to "gnu" for tycho 0.17.0-SNAPSHOT so you should no longer get these warnings:</p> <p><a href="https://github.com/eclipse/tycho/commit/5db5cc2b76bdba8526cfc4acb66b3e4674f23f03" rel="nofollow">https://github.com/eclipse/tycho/commit/5db5cc2b76bdba8526cfc4acb66b3e4674f23f03</a></p>