It might not be the confrence venue's fault. I have run the oomph CDT process as Marc D linked to. It all downloaded and installed Mars fine, clone cdt, downloaded tp, but now it is stuck apparently on hudson.
It has been chewing 100% CPU for 10 minutes or so, so I think it has failed, I will leave it in case it magics itself :-)
Calculating requirements and dependencies.
Computing prerequisite plan
Downloading org.antlr.runtime
Downloading org.slf4j.api.source
Downloading org.bouncycastle.bcprov-jdk15on.source
Downloading org.antlr.runtime.source
Downloading org.slf4j.api
Downloading org.freemarker.source
Downloading org.bouncycastle.bcprov-jdk15on
Downloading org.freemarker
Checking…
40 KB/3 MB
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Replacing local database