Heroku install fails while installing ruby-2.2.0

[John Bocalig]

-----> Ruby app detected
-----> Compiling Ruby/Rack
!
! An error occurred while installing ruby-2.2.0
!
! Heroku recommends you use the latest supported Ruby version listed here:
! https://devcenter.heroku.com/articles/ruby-support#supported-runtimes
!
! For more information on syntax for declaring a Ruby version see:
! https://devcenter.heroku.com/articles/ruby-versions
!
!
! Debug InformationCommand: 'set -o pipefail; curl -L --fail --retry 5 --retry-delay 1 --connect-timeout 3 --max-time 30 https://s3-external-1.amazonaws.com/heroku-buildpack-ruby/heroku-16/ruby-2.2.0.tgz -s -o - | tar zxf - ' failed unexpectedly:
!
! gzip: stdin: unexpected end of file
! tar: Child returned status 1
! tar: Error is not recoverable: exiting now
!
! Push rejected, failed to compile Ruby app.
! Push failed

[leahgaffney]

I'm still having this issue:

-----> Ruby app detected

-----> Compiling Ruby/Rack

       Command: 'set -o pipefail; curl -L --fail --retry 5 --retry-delay 1 --connect-timeout 3 --max-time 30 https://s3-external-1.amazonaws.com/heroku-buildpack-ruby/heroku-18/ruby-2.2.0.tgz -s -o - | tar zxf - ' failed on attempt 1 of 3.

       Command: 'set -o pipefail; curl -L --fail --retry 5 --retry-delay 1 --connect-timeout 3 --max-time 30 https://s3-external-1.amazonaws.com/heroku-buildpack-ruby/heroku-18/ruby-2.2.0.tgz -s -o - | tar zxf - ' failed on attempt 2 of 3.

 !

 !     An error occurred while installing ruby-2.2.0

 !     

 !     This version of Ruby is not available on Heroku-18. The minimum supported version

 !     of Ruby on the Heroku-18 stack can found at:

 !     

 !     https://devcenter.heroku.com/articles/ruby-support#supported-runtimes

 !

 !     Push rejected, failed to compile Ruby app.

 !     Push failed