read old env vars
read old env vars

davidjrice/heroku-buildpack-couchbase-ruby,aarongray/heroku-buildpack-ruby,ndbroadbent/heroku-buildpack-turbo-sprockets,joshco/heroku-buildpack-ruby,Genius/heroku-buildpack-ruby,jonasoberschweiber/heroku-buildpack-ruby,mrhenry/heroku-buildpack-ruby,pkgr/heroku-buildpack-ruby,barakav/heroku-buildpack-ruby,pkgr/buildpack-ruby-precise-old,stefansundin/heroku-buildpack-ruby,bwaite-jaroop/heroku-buildpack-ruby,qnyp/heroku-buildpack-ruby-bower,ablease/custom-buildpack,wycats/heroku-buildpack-middleman,daltonrenaldo/heroku-buildpack-ruby,firmhouse/heroku-buildpack-ruby-freetds,centresource/heroku-buildpack-turbo-sprockets-pmp-ffm,swipesense/heroku-buildpack-ruby,amaltson/heroku-buildpack-ruby,cordata/heroku-buildpack-ruby,erintherad/heroku-buildpack-ruby,ablease/custom-buildpack,tpope/heroku-buildpack-ruby-tpope,michaelphines/alexa-nest,schu/buildpack-testing,jglascoe/heroku-buildpack-ruby-jekyll,leonardykris/mos-ruby-buildpack,dleavitt/heroku-buildpack-ruby,gbenedict/heroku-buildpack-ruby,jeremyvdw/heroku-buildpack-ruby-jekyll,Numerico/heroku-buildpack-ruby,orlando/heroku-buildpack-ruby,ablease/custom-buildpack,zoomer/heroku-buildpack-ruby-bower,fcruxen/ruby-buildpack,qnyp/heroku-buildpack-ruby-bower,qstream/heroku-buildpack-ruby,jgarber/heroku-buildpack-ruby-octopress,CPPWind/ruby-buildpack,Micka33/heroku-buildpack-ruby-liblua,mperejda/heroku-buildpack-ruby,hellojustin/heroku-buildpack-custom-ruby,DyegoCosta/heroku-buildpack-ruby,rstacruz/heroku-buildpack-middleman,makifund/heroku-buildpack-ruby,sky-uk/help-heroku-buildpack,dtao/teeny-buildpack,takii/heroku-buildpack-ruby,jgarber/heroku-buildpack-ruby-octopress,packetmonkey/heroku-buildpack-ruby,redhotvengeance/heroku-buildpack-deep-thought,AJamesPhillips/heroku-buildpack-ruby,centresource/heroku-buildpack-turbo-sprockets-pmp-ffm,jcamenisch/heroku-buildpack-rgeo,cordata/heroku-buildpack-ruby,KoanHealth/heroku-buildpack-marvin-setup,Genius/heroku-buildpack-ruby,jumptvs/BP_Ruby,hausdorff/heroku-buildpack-ruby-jekyll,Altoros/ruby-buildpack,mrhenry/heroku-buildpack-ruby,KoanHealth/heroku-buildpack-marvin-setup,musicglue/heroku-buildpack-ruby,darron/heroku-buildpack-ruby-jekyll,joshco/heroku-buildpack-ruby,Numerico/heroku-buildpack-ruby,lemurheavy/heroku-buildpack-ruby,donnykurnia/heroku-buildpack-ruby,iamjarvo/ruby-buildpack,diasks2/heroku-buildpack-mecab,dlorson/gentle-buildpack,andycroll/heroku-buildpack-jekyll,cloudControl/buildpack-ruby,righi/instacart-heroku-buildpack,jgarber/heroku-buildpack-ruby-octopress,catalyzeio/buildpack-ruby,ruby/heroku-buildpack-www-ruby-lang,dleavitt/heroku-buildpack-ruby,ibmdb/db2rubybuildpack,scottatron/moc-buildpack,Nedomas/heroku-buildpack-ruby-minus-node-with-node-paths,ericboehs/heroku-buildpack-ruby,rhomobile/heroku-buildpack-ruby,guidance-guarantee-programme/heroku-buildpack-princexml-old,d-reinhold/cf-buildpack-ruby,righi/instacart-heroku-buildpack,zoomer/heroku-buildpack-ruby-bower,stefansundin/heroku-buildpack-ruby,pavgup/heroku-buildpack-ruby-lateslugignore,travis-ci/heroku-buildpack-ruby,DigitalInnovation/heroku-buildpack-mslabs,jgable/buildpack-ruby-rack-setup-tasks,ericroberts/heroku-buildpack-ruby,beydogan/ruby-buildpack,ablease/custom-buildpack,schu/heroku-buildpack-ruby,orenyk/heroku-buildpack-ruby,Nedomas/heroku-buildpack-ruby-minus-node-with-node-paths,lemurheavy/heroku-buildpack-ruby,catalyzeio/buildpack-ruby,pilotcreative/heroku-buildpack-ruby,WilliamDenniss/heroku-buildpack-ruby-imagemagick,anay/buildpack-ruby-with-oracle-jdk,pavgup/heroku-buildpack-ruby-lateslugignore,trumaker/heroku-buildpack-turbo-sprockets,WilliamDenniss/heroku-buildpack-ruby-imagemagick,thewebguy/heroku-buildpack-ruby-ffmpeg-libsndfile,AdStage/heroku-buildpack-ruby,bskyb-commerce/ruby-buildpack,Altoros/ruby-buildpack,Numerico/heroku-buildpack-ruby,takii/heroku-buildpack-ruby,cmaggard/heroku-buildpack-turbo-sprockets,iamjarvo/ruby-buildpack,mintybit/heroku-buildpack-ruby,fcruxen/ruby-buildpack,Jonty/ruby-buildpack,heroku/heroku-buildpack-ruby,jayshreeanand/heroku-buildpack-ruby,orenyk/heroku-buildpack-ruby,simonnordberg/heroku-buildpack-ruby,DyegoCosta/heroku-buildpack-ruby,bskyb-commerce/ruby-buildpack,jasonlevens/heroku-buildpack-ruby,HYPERHYPER/heroku-buildpack-ruby,takii/db2rubybuildpack,icelab/heroku-buildpack-ruby,teodor-pripoae/heroku-buildpack-ruby,schu/buildpack-testing,recursecenter/heroku-buildpack-ruby,donnykurnia/heroku-buildpack-ruby,jumptvs/BP_Ruby,rhomobile/heroku-buildpack-ruby,bellycard/heroku-buildpack-ruby,phusion/heroku-buildpack-ruby,ekaranto/rails4-bluemix-buildpack,qstream/heroku-buildpack-ruby,dtao/deft-buildpack-ruby,ltrademark/heroku-buildpack-ruby,12spokes/heroku-buildpack-ruby-imagemagick,cloudfoundry/ruby-buildpack,nicholasmott/heroku-buildpack-octopress,ekaranto/rails4-bluemix-buildpack,CPPWind/ruby-buildpack,jayshreeanand/heroku-buildpack-ruby,engineyard/heroku-buildpack-ruby,reesio/heroku-buildpack-ruby,hatofmonkeys/ruby-testing-buildpack,firmhouse/heroku-buildpack-ruby-freetds,DigitalInnovation/heroku-buildpack-mslabs,erintherad/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,brightbytes/heroku-buildpack-ruby-without-assets-precompile,Jonty/ruby-buildpack,Altoros/ruby-buildpack,phusion/heroku-buildpack-ruby,takii/db2rubybuildpack,dtao/teeny-buildpack,allomov/fat-free-heroku-buildpack-ruby,pkgr/heroku-buildpack-ruby,teodor-pripoae/heroku-buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk,stolt45/heroku-buildpack-ruby-with-sqlite3,sgnpa/heroku-buildpack-cas,sanemat/heroku-buildpack-ruby-tachikoma,redhotvengeance/heroku-buildpack-deep-thought,jcamenisch/heroku-buildpack-rgeo,centresource/heroku-buildpack-turbo-sprockets-pmp-ffm,Micka33/heroku-buildpack-ruby-liblua,zunda/heroku-buildpack-ruby,WilliamDenniss/heroku-buildpack-ruby-imagemagick,fcruxen/ruby-buildpack,Dim25/heroku-buildpack-ruby-GSL,Dim25/heroku-buildpack-ruby-GSL,fcruxen/ruby-buildpack,hpcloud/ruby-buildpack,AdStage/heroku-buildpack-ruby,sky-uk/ruby-buildpack,nthj/heroku-buildpack-mirror,AJamesPhillips/heroku-buildpack-ruby,crdschurch/heroku-buildpack-ruby,hpcloud/ruby-buildpack,jumptvs/BP_Ruby,dtao/deft-buildpack-ruby,dieze/heroku-buildpack-ruby-hooks,musicglue/heroku-buildpack-ruby,electricobjects/heroku-buildpack-ruby,jgable/buildpack-ruby-rack-setup-tasks,hatofmonkeys/ruby-testing-buildpack,sky-uk/help-heroku-buildpack,ejholmes/heroku-buildpack-middleman,codykrieger/heroku-buildpack-jekyll,ilpoldo/heroku-buildpack-ruby,cloudfoundry/ruby-buildpack,sgnpa/heroku-buildpack-cas,jumptvs/BP_Ruby,pcincalifornia/wdc-heroku-buildpack-middleman,brightbytes/heroku-buildpack-ruby-without-assets-precompile,hellojustin/heroku-buildpack-custom-ruby,cloudfoundry/ruby-buildpack,jonasoberschweiber/heroku-buildpack-ruby,lyoshenka/heroku-buildpack-ruby-jekyll,aarongray/heroku-buildpack-ruby,ActiveState/heroku-buildpack-ruby,darron/heroku-buildpack-ruby-jekyll,hixi/heroku-buildpack-ruby,thewebguy/heroku-buildpack-ruby-ffmpeg-libsndfile,pcincalifornia/wdc-heroku-buildpack-middleman,sanemat/heroku-buildpack-ruby-tachikoma,thirdprestige/heroku-buildpack-ruby,Jonty/ruby-buildpack,rstacruz/heroku-buildpack-middleman,sstelfox/buildpack-ruby,AdStage/heroku-buildpack-ruby,d-reinhold/cf-buildpack-ruby,ChefSteps/heroku-buildpack-ruby,tpope/heroku-buildpack-ruby-tpope,cloudfoundry/ruby-buildpack,electricobjects/heroku-buildpack-ruby,lyoshenka/heroku-buildpack-ruby-jekyll,travis-ci/heroku-buildpack-ruby,crdschurch/heroku-buildpack-ruby,shuber/heroku-buildpack-ruby,atmos/heroku-buildpack-ruby,reesio/heroku-buildpack-ruby,travis-ci/heroku-buildpack-ruby,moneyadviceservice/heroku-buildpack-ruby-bowndler,fgbreel/heroku-buildpack-ruby,CPPWind/ruby-buildpack,HYPERHYPER/heroku-buildpack-ruby,pkgr/buildpack-ruby-precise-old,phusion/heroku-buildpack-ruby,0x00evil/heroku-buildpack-ruby,rowanoulton/heroku-buildpack-ruby,hixi/heroku-buildpack-ruby,bskyb-commerce/help-heroku-buildpack,Git-Host/prelang-buildpack,sky-uk/ruby-buildpack,pietrop/heroku-buildpack-ruby,davidjrice/heroku-buildpack-couchbase-ruby,hpcloud/ruby-buildpack,dieze/heroku-buildpack-ruby-hooks,zidekmat/buildpack-ruby,ericroberts/heroku-buildpack-ruby,wolfoo2931/heroku-buildpack-ruby-2a352ae,DouglasAllen/heroku-buildpack-ruby,DouglasAllen/heroku-buildpack-ruby,d-reinhold/cf-buildpack-ruby,recursecenter/heroku-buildpack-ruby,CPPWind/ruby-buildpack,tomwolfe/heroku-buildpack-gsl-ruby,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,progrium/heroku-buildpack-ruby,Git-Host/prelang-buildpack,ibmdb/db2rubybuildpack,thirdprestige/heroku-buildpack-ruby,ejholmes/heroku-buildpack-middleman,hatofmonkeys/ruby-testing-buildpack,takii/db2rubybuildpack,space150/heroku-buildpack-ruby,pavgup/heroku-buildpack-ruby-lateslugignore,meskyanichi/heroku-buildpack-middleman,awebneck/heroku-buildpack-canvas,mperejda/heroku-buildpack-ruby,cloudfoundry/ruby-buildpack,millie/heroku-buildpack-ruby-with-pdftk,atmos/heroku-buildpack-ruby,tomwolfe/heroku-buildpack-gsl-ruby,rvizza/heroku-buildpack-gsl-ruby,schu/heroku-buildpack-ruby,ekaranto/rails4-bluemix-buildpack,moneyadviceservice/heroku-buildpack-ruby-bowndler,Scalingo/ruby-buildpack,daltonrenaldo/heroku-buildpack-ruby,cloudControl/buildpack-ruby,andycroll/heroku-buildpack-jekyll,jonseaberg/heroku-buildpack-turbo-sprockets,wakermahmud/heroku-buildpack-jekyll,gls1/heroku-buildpack-ruby-pdftk-new,hpcloud/heroku-buildpack-ruby,tenjikinc/heroku-buildpack-ruby,mintybit/heroku-buildpack-ruby,cloudn/buildpack-ruby,davidjrice/heroku-buildpack-couchbase-ruby,pkgr/buildpack-ruby-precise-old,ChefSteps/heroku-buildpack-ruby,mattwalters/heroku-buildpack-ruby,ascot21/heroku-buildpack-turbo-sprockets,instacart/heroku-buildpack-ruby,bskyb-commerce/ruby-buildpack,guidance-guarantee-programme/heroku-buildpack-princexml-old,pietrop/heroku-buildpack-ruby,atmos/heroku-buildpack-ruby,diasks2/heroku-buildpack-mecab,nicholasmott/heroku-buildpack-octopress,swipesense/heroku-buildpack-ruby,barakav/heroku-buildpack-ruby,ilpoldo/heroku-buildpack-ruby,allomov/fat-free-heroku-buildpack-ruby,heroku/heroku-buildpack-ruby,ericboehs/heroku-buildpack-ruby,cmaggard/heroku-buildpack-turbo-sprockets,sstelfox/buildpack-ruby,jeremyvdw/heroku-buildpack-ruby-jekyll,derrek/heroku-buildpack-ruby,anay/buildpack-ruby-with-oracle-jdk,progrium/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,ltrademark/heroku-buildpack-ruby,0x00evil/heroku-buildpack-ruby,progrium/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,codykrieger/heroku-buildpack-jekyll,zidekmat/buildpack-ruby,bskyb-commerce/help-heroku-buildpack,sky-uk/ruby-buildpack,orlando/heroku-buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk,nthj/heroku-buildpack-mirror,jasonlevens/heroku-buildpack-ruby,fgbreel/heroku-buildpack-ruby,adaptivelab/heroku-buildpack-adaptivelab-website-2,wycats/heroku-buildpack-middleman,Jonty/ruby-buildpack,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,trumaker/heroku-buildpack-turbo-sprockets,awebneck/heroku-buildpack-canvas,blueapron/heroku-buildpack-ruby,hone/heroku-buildpack-ruby,adaptivelab/heroku-buildpack-adaptivelab-website-2,wakermahmud/heroku-buildpack-jekyll,packetmonkey/heroku-buildpack-ruby,engineyard/heroku-buildpack-ruby,meskyanichi/heroku-buildpack-middleman,sanemat/heroku-buildpack-ruby-tachikoma,takii/db2rubybuildpack,ActiveState/heroku-buildpack-ruby,amaltson/heroku-buildpack-ruby,vhx/heroku-buildpack,beydogan/ruby-buildpack,Scalingo/ruby-buildpack,lemurheavy/heroku-buildpack-ruby,cloudn/buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk-new,gbenedict/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,ascot21/heroku-buildpack-turbo-sprockets,hpcloud/heroku-buildpack-ruby,millie/heroku-buildpack-ruby-with-pdftk,ibmdb/db2rubybuildpack,hone/heroku-buildpack-ruby,instacart/heroku-buildpack-ruby,samfrench/heroku-buildpack-ruby,jglascoe/heroku-buildpack-ruby-jekyll,ekaranto/rails4-bluemix-buildpack,bellycard/heroku-buildpack-ruby,firmhouse/heroku-buildpack-ruby-freetds,samfrench/heroku-buildpack-ruby,nicholasmott/heroku-buildpack-octopress,makifund/heroku-buildpack-ruby,iamjarvo/ruby-buildpack,scottatron/moc-buildpack,AJamesPhillips/heroku-buildpack-ruby,tdenovan/heroku-buildpack-ruby,simonnordberg/heroku-buildpack-ruby,cloudn/buildpack-ruby,michaelphines/alexa-nest,zunda/heroku-buildpack-ruby,ndbroadbent/heroku-buildpack-turbo-sprockets,space150/heroku-buildpack-ruby,derrek/heroku-buildpack-ruby,vhx/heroku-buildpack,icelab/heroku-buildpack-ruby,sky-uk/ruby-buildpack,stolt45/heroku-buildpack-ruby-with-sqlite3,shuber/heroku-buildpack-ruby,hpcloud/ruby-buildpack,sgnpa/heroku-buildpack-cas,dlorson/gentle-buildpack,tdenovan/heroku-buildpack-ruby,12spokes/heroku-buildpack-ruby-imagemagick,iamjarvo/ruby-buildpack,rowanoulton/heroku-buildpack-ruby,hausdorff/heroku-buildpack-ruby-jekyll,bwaite-jaroop/heroku-buildpack-ruby,rvizza/heroku-buildpack-gsl-ruby,leonardykris/mos-ruby-buildpack,wolfoo2931/heroku-buildpack-ruby-2a352ae,cloudn/buildpack-ruby,mattwalters/heroku-buildpack-ruby,thirdprestige/heroku-buildpack-ruby,tenjikinc/heroku-buildpack-ruby,Altoros/ruby-buildpack,bskyb-commerce/ruby-buildpack,blueapron/heroku-buildpack-ruby