don't print out rails plugin injection if we aren't injecting anything
don't print out rails plugin injection if we aren't injecting anything

tenjikinc/heroku-buildpack-ruby,ibmdb/db2rubybuildpack,hpcloud/heroku-buildpack-ruby,ilpoldo/heroku-buildpack-ruby,ndbroadbent/heroku-buildpack-turbo-sprockets,ericroberts/heroku-buildpack-ruby,travis-ci/heroku-buildpack-ruby,Jonty/ruby-buildpack,davidjrice/heroku-buildpack-couchbase-ruby,jumptvs/BP_Ruby,Jonty/ruby-buildpack,anay/buildpack-ruby-with-oracle-jdk,blueapron/heroku-buildpack-ruby,hpcloud/ruby-buildpack,recursecenter/heroku-buildpack-ruby,sstelfox/buildpack-ruby,thewebguy/heroku-buildpack-ruby-ffmpeg-libsndfile,stolt45/heroku-buildpack-ruby-with-sqlite3,jasonlevens/heroku-buildpack-ruby,cmaggard/heroku-buildpack-turbo-sprockets,mperejda/heroku-buildpack-ruby,schu/heroku-buildpack-ruby,ndbroadbent/heroku-buildpack-turbo-sprockets,dlorson/gentle-buildpack,lyoshenka/heroku-buildpack-ruby-jekyll,fgbreel/heroku-buildpack-ruby,stolt45/heroku-buildpack-ruby-with-sqlite3,ltrademark/heroku-buildpack-ruby,pietrop/heroku-buildpack-ruby,Nedomas/heroku-buildpack-ruby-minus-node-with-node-paths,Dim25/heroku-buildpack-ruby-GSL,jasonlevens/heroku-buildpack-ruby,simonnordberg/heroku-buildpack-ruby,Genius/heroku-buildpack-ruby,zidekmat/buildpack-ruby,musicglue/heroku-buildpack-ruby,ilpoldo/heroku-buildpack-ruby,Altoros/ruby-buildpack,qnyp/heroku-buildpack-ruby-bower,moneyadviceservice/heroku-buildpack-ruby-bowndler,ekaranto/rails4-bluemix-buildpack,pkgr/buildpack-ruby-precise-old,icelab/heroku-buildpack-ruby,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,catalyzeio/buildpack-ruby,ruby/heroku-buildpack-www-ruby-lang,bwaite-jaroop/heroku-buildpack-ruby,bskyb-commerce/help-heroku-buildpack,crdschurch/heroku-buildpack-ruby,hellojustin/heroku-buildpack-custom-ruby,instacart/heroku-buildpack-ruby,Nedomas/heroku-buildpack-ruby-minus-node-with-node-paths,space150/heroku-buildpack-ruby,electricobjects/heroku-buildpack-ruby,schu/heroku-buildpack-ruby,trumaker/heroku-buildpack-turbo-sprockets,engineyard/heroku-buildpack-ruby,phusion/heroku-buildpack-ruby,ascot21/heroku-buildpack-turbo-sprockets,gls1/heroku-buildpack-ruby-pdftk,fgbreel/heroku-buildpack-ruby,bskyb-commerce/help-heroku-buildpack,packetmonkey/heroku-buildpack-ruby,icelab/heroku-buildpack-ruby,tomwolfe/heroku-buildpack-gsl-ruby,jumptvs/BP_Ruby,DyegoCosta/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,qnyp/heroku-buildpack-ruby-bower,Altoros/ruby-buildpack,HYPERHYPER/heroku-buildpack-ruby,jayshreeanand/heroku-buildpack-ruby,sanemat/heroku-buildpack-ruby-tachikoma,instacart/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,cloudn/buildpack-ruby,ActiveState/heroku-buildpack-ruby,mintybit/heroku-buildpack-ruby,dieze/heroku-buildpack-ruby-hooks,ablease/custom-buildpack,ChefSteps/heroku-buildpack-ruby,pietrop/heroku-buildpack-ruby,ibmdb/db2rubybuildpack,sanemat/heroku-buildpack-ruby-tachikoma,CPPWind/ruby-buildpack,barakav/heroku-buildpack-ruby,ChefSteps/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,cloudfoundry/ruby-buildpack,simonnordberg/heroku-buildpack-ruby,bellycard/heroku-buildpack-ruby,fcruxen/ruby-buildpack,dtao/teeny-buildpack,tdenovan/heroku-buildpack-ruby,hpcloud/ruby-buildpack,mrhenry/heroku-buildpack-ruby,bskyb-commerce/ruby-buildpack,righi/instacart-heroku-buildpack,ericboehs/heroku-buildpack-ruby,donnykurnia/heroku-buildpack-ruby,cloudn/buildpack-ruby,daltonrenaldo/heroku-buildpack-ruby,trumaker/heroku-buildpack-turbo-sprockets,erintherad/heroku-buildpack-ruby,wakermahmud/heroku-buildpack-jekyll,derrek/heroku-buildpack-ruby,electricobjects/heroku-buildpack-ruby,amaltson/heroku-buildpack-ruby,ActiveState/heroku-buildpack-ruby,recursecenter/heroku-buildpack-ruby,hatofmonkeys/ruby-testing-buildpack,cloudfoundry/ruby-buildpack,hatofmonkeys/ruby-testing-buildpack,phusion/heroku-buildpack-ruby,tdenovan/heroku-buildpack-ruby,sky-uk/ruby-buildpack,reesio/heroku-buildpack-ruby,bwaite-jaroop/heroku-buildpack-ruby,cloudfoundry/ruby-buildpack,sky-uk/ruby-buildpack,zoomer/heroku-buildpack-ruby-bower,fcruxen/ruby-buildpack,diasks2/heroku-buildpack-mecab,gls1/heroku-buildpack-ruby-pdftk,iamjarvo/ruby-buildpack,bskyb-commerce/ruby-buildpack,makifund/heroku-buildpack-ruby,rvizza/heroku-buildpack-gsl-ruby,ablease/custom-buildpack,takii/db2rubybuildpack,ltrademark/heroku-buildpack-ruby,teodor-pripoae/heroku-buildpack-ruby,righi/instacart-heroku-buildpack,0x00evil/heroku-buildpack-ruby,ekaranto/rails4-bluemix-buildpack,rvizza/heroku-buildpack-gsl-ruby,catalyzeio/buildpack-ruby,jeremyvdw/heroku-buildpack-ruby-jekyll,KoanHealth/heroku-buildpack-marvin-setup,takii/heroku-buildpack-ruby,rhomobile/heroku-buildpack-ruby,DigitalInnovation/heroku-buildpack-mslabs,DouglasAllen/heroku-buildpack-ruby,DyegoCosta/heroku-buildpack-ruby,shuber/heroku-buildpack-ruby,dtao/teeny-buildpack,samfrench/heroku-buildpack-ruby,wolfoo2931/heroku-buildpack-ruby-2a352ae,Altoros/ruby-buildpack,ablease/custom-buildpack,Genius/heroku-buildpack-ruby,vhx/heroku-buildpack,shuber/heroku-buildpack-ruby,pkgr/heroku-buildpack-ruby,amaltson/heroku-buildpack-ruby,anay/buildpack-ruby-with-oracle-jdk,DouglasAllen/heroku-buildpack-ruby,schu/buildpack-testing,rowanoulton/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,awebneck/heroku-buildpack-canvas,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,hpcloud/ruby-buildpack,jumptvs/BP_Ruby,mattwalters/heroku-buildpack-ruby,CPPWind/ruby-buildpack,Micka33/heroku-buildpack-ruby-liblua,DigitalInnovation/heroku-buildpack-mslabs,swipesense/heroku-buildpack-ruby,mintybit/heroku-buildpack-ruby,jonasoberschweiber/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,ascot21/heroku-buildpack-turbo-sprockets,jayshreeanand/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,dlorson/gentle-buildpack,pkgr/buildpack-ruby-precise-old,donnykurnia/heroku-buildpack-ruby,fcruxen/ruby-buildpack,mattmanning/heroku-buildpack-ruby-jekyll,qstream/heroku-buildpack-ruby,stefansundin/heroku-buildpack-ruby,sky-uk/ruby-buildpack,awebneck/heroku-buildpack-canvas,Scalingo/ruby-buildpack,wolfoo2931/heroku-buildpack-ruby-2a352ae,beydogan/ruby-buildpack,dtao/deft-buildpack-ruby,cloudControl/buildpack-ruby,reesio/heroku-buildpack-ruby,schu/buildpack-testing,orenyk/heroku-buildpack-ruby,orlando/heroku-buildpack-ruby,mattwalters/heroku-buildpack-ruby,swipesense/heroku-buildpack-ruby,ablease/custom-buildpack,wakermahmud/heroku-buildpack-jekyll,d-reinhold/cf-buildpack-ruby,hellojustin/heroku-buildpack-custom-ruby,makifund/heroku-buildpack-ruby,sky-uk/help-heroku-buildpack,Jonty/ruby-buildpack,leonardykris/mos-ruby-buildpack,Git-Host/prelang-buildpack,bellycard/heroku-buildpack-ruby,ibmdb/db2rubybuildpack,heroku/heroku-buildpack-ruby,redhotvengeance/heroku-buildpack-deep-thought,dieze/heroku-buildpack-ruby-hooks,zidekmat/buildpack-ruby,guidance-guarantee-programme/heroku-buildpack-princexml-old,Git-Host/prelang-buildpack,beydogan/ruby-buildpack,redhotvengeance/heroku-buildpack-deep-thought,ericroberts/heroku-buildpack-ruby,orenyk/heroku-buildpack-ruby,travis-ci/heroku-buildpack-ruby,Scalingo/ruby-buildpack,zoomer/heroku-buildpack-ruby-bower,jumptvs/BP_Ruby,scottatron/moc-buildpack,cloudn/buildpack-ruby,jgable/buildpack-ruby-rack-setup-tasks,KoanHealth/heroku-buildpack-marvin-setup,diasks2/heroku-buildpack-mecab,cloudControl/buildpack-ruby,dleavitt/heroku-buildpack-ruby,crdschurch/heroku-buildpack-ruby,guidance-guarantee-programme/heroku-buildpack-princexml-old,codykrieger/heroku-buildpack-jekyll,barakav/heroku-buildpack-ruby,cmaggard/heroku-buildpack-turbo-sprockets,takii/db2rubybuildpack,daltonrenaldo/heroku-buildpack-ruby,takii/heroku-buildpack-ruby,allomov/fat-free-heroku-buildpack-ruby,cloudfoundry/ruby-buildpack,zunda/heroku-buildpack-ruby,davidjrice/heroku-buildpack-couchbase-ruby,mperejda/heroku-buildpack-ruby,jeremyvdw/heroku-buildpack-ruby-jekyll,travis-ci/heroku-buildpack-ruby,sky-uk/help-heroku-buildpack,michaelphines/alexa-nest,space150/heroku-buildpack-ruby,iamjarvo/ruby-buildpack,HYPERHYPER/heroku-buildpack-ruby,vhx/heroku-buildpack,hixi/heroku-buildpack-ruby,scottatron/moc-buildpack,Micka33/heroku-buildpack-ruby-liblua,iamjarvo/ruby-buildpack,rhomobile/heroku-buildpack-ruby,engineyard/heroku-buildpack-ruby,brightbytes/heroku-buildpack-ruby-without-assets-precompile,cloudfoundry/ruby-buildpack,brightbytes/heroku-buildpack-ruby-without-assets-precompile,ekaranto/rails4-bluemix-buildpack,jonasoberschweiber/heroku-buildpack-ruby,takii/db2rubybuildpack,aarongray/heroku-buildpack-ruby,pkgr/heroku-buildpack-ruby,gbenedict/heroku-buildpack-ruby,sstelfox/buildpack-ruby,musicglue/heroku-buildpack-ruby,zunda/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,tpope/heroku-buildpack-ruby-tpope,sky-uk/ruby-buildpack,teodor-pripoae/heroku-buildpack-ruby,thewebguy/heroku-buildpack-ruby-ffmpeg-libsndfile,mrhenry/heroku-buildpack-ruby,bskyb-commerce/ruby-buildpack,bskyb-commerce/ruby-buildpack,stefansundin/heroku-buildpack-ruby,jgable/buildpack-ruby-rack-setup-tasks,phusion/heroku-buildpack-ruby,michaelphines/alexa-nest,gbenedict/heroku-buildpack-ruby,allomov/fat-free-heroku-buildpack-ruby,rowanoulton/heroku-buildpack-ruby,d-reinhold/cf-buildpack-ruby,0x00evil/heroku-buildpack-ruby,orlando/heroku-buildpack-ruby,samfrench/heroku-buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk-new,dleavitt/heroku-buildpack-ruby,erintherad/heroku-buildpack-ruby,davidjrice/heroku-buildpack-couchbase-ruby,d-reinhold/cf-buildpack-ruby,tenjikinc/heroku-buildpack-ruby,packetmonkey/heroku-buildpack-ruby,tomwolfe/heroku-buildpack-gsl-ruby,dtao/deft-buildpack-ruby,leonardykris/mos-ruby-buildpack,cordata/heroku-buildpack-ruby,Jonty/ruby-buildpack,moneyadviceservice/heroku-buildpack-ruby-bowndler,hpcloud/ruby-buildpack,gls1/heroku-buildpack-ruby-pdftk-new,Dim25/heroku-buildpack-ruby-GSL,ericboehs/heroku-buildpack-ruby,tpope/heroku-buildpack-ruby-tpope,lyoshenka/heroku-buildpack-ruby-jekyll,qstream/heroku-buildpack-ruby,cordata/heroku-buildpack-ruby,codykrieger/heroku-buildpack-jekyll,CPPWind/ruby-buildpack,heroku/heroku-buildpack-ruby,derrek/heroku-buildpack-ruby,fcruxen/ruby-buildpack,cloudn/buildpack-ruby,sanemat/heroku-buildpack-ruby-tachikoma,blueapron/heroku-buildpack-ruby,Altoros/ruby-buildpack,aarongray/heroku-buildpack-ruby,pkgr/buildpack-ruby-precise-old,iamjarvo/ruby-buildpack,hatofmonkeys/ruby-testing-buildpack,hixi/heroku-buildpack-ruby,ekaranto/rails4-bluemix-buildpack,takii/db2rubybuildpack,hpcloud/heroku-buildpack-ruby,CPPWind/ruby-buildpack