Heroku：错误将Rails应用程序推送到Heroku，Heroku找不到Rails应用程序
我试图将Rails应用程序推送到Heroku但是我经常遇到这个错误。
user$ git push heroku master Initializing repository, done. Counting objects: 158, done. Delta compression using up to 4 threads. Compressing objects: 100% (144/144), done. Writing objects: 100% (158/158), 671.52 KiB | 160.00 KiB/s, done. Total 158 (delta 32), reused 0 (delta 0) -----> Ruby app detected -----> Compiling Ruby/Rails ! ! An error occurred while installing Ruby ruby-2.1.1 ! For supported Ruby versions see https://devcenter.heroku.com/articles/ruby-support#supported-runtimes ! Note: Only the most recent version of Ruby 2.1 is supported on Cedar-14 ! Command: 'set -o pipefail; curl --fail --retry 3 --retry-delay 1 --connect-timeout 3 --max-time 30 https://s3-external-1.amazonaws.com/heroku-buildpack-ruby/cedar-14/ruby-2.1.1.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 To git@heroku.com:user.git ! [remote rejected] master -> master (pre-receive hook declined) error: failed to push some refs to 'git@heroku.com:user.git' 我研究了一些可能的解决方案，但是这些解决方案似乎都没有用。 我试图摧毁heroku应用程序，然后重新创建它，我尝试使用不同的ruby版本，但似乎也没有工作。
Heroku不支持2.1.1版
您需要在Gemfile中指定不同的版本：
# Gemfile source "https://rubygems.org" ruby '2.1.4' # or other from link above [...]