Heroku "Multiple Buildpack" Buildpack not working

Question

My app depends on both nodejs and phantomjs and I follow the trigoman's answer of Is there a working nodejs/phantomjs Heroku buildpack?.

But I got stucked as follows:

creating young-thicket-8895... done, region is us
BUILDPACK_URL=http://github.com/ddollar/heroku-buildpack-multi.git
http://young-thicket-8895.herokuapp.com/ | git@heroku.com:young-thicket-8895.git
Git remote heroku added
Setting config vars and restarting young-thicket-8895... done, v4
PATH: /usr/local/bin:/usr/bin:/bin:/app/vendor/phantomjs/bin
Setting config vars and restarting young-thicket-8895... done, v5
LD_LIBRARY_PATH: /usr/local/lib:/usr/lib:/lib:/app/vendor/phantomjs/lib
Counting objects: 26, done.
Compressing objects: 100% (19/19), done.
Writing objects: 100% (26/26), 22.00 KiB, done.
Total 26 (delta 0), reused 0 (delta 0)

-----> Fetching custom git buildpack... done
-----> Multipack app detected
=====> Downloading Buildpack: http://github.com/heroku/heroku-buildpack-nodejs.git

The process stops for quite a lot time and then

!     Push rejected, failed to compile Multipack app

Answer 1

From https://github.com/ddollar/heroku-buildpack-multi/issues/16 -- change the buildpacks to point to the https:// git repo url. instead of http:// or git://

Works for me.