@nawroth Well, Travis CI ignores requested oraclejdk6 and uses Oracle JDK 7u21 instead, https://api.travis-ci.org/jobs/13365085/log.txt?deansi=true

    $ cd manandbytes/neoclipse
    $ git checkout -qf 6176f4a65f7a8435a80beaa77516de7047c9e424
    $ jdk_switcher use oraclejdk6
    $ java -version
    java version "1.7.0_21"
    OpenJDK Runtime Environment (IcedTea 2.3.9) (7u21-2.3.9-0ubuntu0.12.04.1)
    OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)
    $ javac -version
    javac 1.7.0_21