allow them to fail
allow them to fail

samuelhavron/heroku-buildpack-python,ojacobson/heroku-buildpack-python,Nazanin84/python-buildpack,gaumire/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,jimlindeman/python-buildpack-collectd,benjaminfox/heroku-buildpack-python-geoip,andela-brotich/wger-buildpack-python,pkumar-appd/python-buildpack,wbrefvem/heroku-buildpack-python,andrespires/python-buildpack,AltSchool/heroku-buildpack-python,gitricko/apt-python-buildpack,AltSchool/heroku-buildpack-python,slorg1/heroku-buildpack-python,skilljar/heroku-buildpack-python,jamarparris/heroku-buildpack-python-swig,benmurden/heroku-buildpack-python-ember,edenspiekermann-amsterdam/heroku-buildpack-python,DylanLukes/heroku-buildpack-python,loanzen/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,Nazanin84/python-buildpack,edmorley/heroku-buildpack-python,jimlindeman/python-buildpack-collectd,zakdoek/heroku-buildpack-django,benmurden/heroku-buildpack-python-ember,plangrid/heroku-buildpack-python,benjaminfox/heroku-buildpack-python-geoip,zakdoek/heroku-buildpack-django,pkumar-appd/python-buildpack,Scalingo/python-buildpack,cloudfoundry/python-buildpack,driftyco/heroku-buildpack-sphinx,samuelhavron/heroku-buildpack-python,jimlindeman/python-buildpack-collectd,gitricko/apt-python-buildpack,jvenezia/heroku-buildpack-python,joshfriend/heroku-buildpack-python,smalleats/heroku-buildpack-python,andrespires/python-buildpack,samuelhavron/heroku-buildpack-python,ad-m/heroku-buildpack-python,heroku/heroku-buildpack-python,pkumar-appd/python-buildpack,miraculixx/heroku-buildpack-python,swanson/heroku-buildpack-python-ortools,wbrefvem/heroku-buildpack-python,doda/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,ad-m/heroku-buildpack-python,grivescorbett/heroku-buildpack-python,doda/heroku-buildpack-python,heroku/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,samuelhavron/heroku-buildpack-python,cloudfoundry/python-buildpack,pmclanahan/heroku-buildpack-python-peep,cloudfoundry/python-buildpack,gitricko/apt-python-buildpack,Nazanin84/python-buildpack,andrespires/python-buildpack,HanSooloo/heroku-buildpack-python,Scalingo/python-buildpack,cclauss/heroku-buildpack-python