[DRE-maint] ruby-carrierwave is marked for autoremoval from testing

[Debian testing autoremoval watch]

ruby-carrierwave 0.10.0+gh-1 is marked for autoremoval from testing on 2015-09-22

It (build-)depends on packages with these RC bugs:
795040: ruby-fission: FTBFS: test fails: result['output'].empty?.should be_false