don't fail if the assets:precompile task works
don't fail if the assets:precompile task works

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