ERROR: Error installing bundler: bundler requires Ruby version >= 2.3.0.

[oshivwanshi]

We were using Bundler version 1.12.5 with ruby version = "2.1" , 'poise-ruby', '~> 2.4.0' and 'poise-ruby-build', '~> 1.1.0'

But after the release Bundler version 2.0.0 - January 03, 2019 we are getting this error STDERR: ERROR: Error installing bundler:bundler requires Ruby version >= 2.3.0.
can anyone please help me with this issue?

`===================================================================

Error executing action `install` on resource 'ruby_runtime[logFileCollector-ruby-2.1]'

===================================================================

Mixlib::ShellOut::ShellCommandFailed
------------------------------------
ruby_gem[bundler] (/var/chef/cache/cookbooks/poise-ruby/files/halite_gem/poise_ruby/ruby_providers/base.rb line 109) had an error: Mixlib::ShellOut::ShellCommandFailed: Expected process to exit with [0], but received '1'
---- Begin output of /opt/ruby_build/builds/logFileCollector-ruby-2.1/bin/gem install bundler -q --no-rdoc --no-ri -v "2.0.0" ----
STDOUT:
STDERR: ERROR:  Error installing bundler:
    bundler requires Ruby version >= 2.3.0.
---- End output of /opt/ruby_build/builds/logFileCollector-ruby-2.1/bin/gem install bundler -q --no-rdoc --no-ri -v "2.0.0" ----
Ran /opt/ruby_build/builds/logFileCollector-ruby-2.1/bin/gem install bundler -q --no-rdoc --no-ri -v "2.0.0" returned 1

Cookbook Trace:
---------------
/var/chef/cache/cookbooks/poise-ruby/files/halite_gem/poise_ruby/resources/ruby_gem.rb:75:in `block in action_upgrade'
/var/chef/cache/cookbooks/poise-ruby/files/halite_gem/poise_ruby/resources/ruby_gem.rb:111:in `patch_environment'
/var/chef/cache/cookbooks/poise-ruby/files/halite_gem/poise_ruby/resources/ruby_gem.rb:75:in `action_upgrade'
/var/chef/cache/cookbooks/poise/files/halite_gem/poise/helpers/notifying_block.rb:69:in `notifying_block'
/var/chef/cache/cookbooks/poise-ruby/files/halite_gem/poise_ruby/ruby_providers/base.rb:43:in `action_install'

`

[jsmartt]

This looks like it's expected behavior. See https://bundler.io/guides/bundler_2_upgrade.html

[keith]

FYI this means that the version of /usr/bin/gem (2.5.2.3) that ships with macOS 10.14.2 (currently the newest point release) is no longer supported.

[indirect]

Bundler 2 no longer supports versions of Ruby that are so old they have been abandoned by the ruby-core team. That includes Ruby 2.2 and older. This is intended behavior, sorry.

[vhladiienko]

If someone Googles this, just install the version from your Gemfile.lock by running two commands as shown in the official blog post here.

cat Gemfile.lock | grep -A 1 "BUNDLED WITH"
BUNDLED WITH
   1.17.3

gem install bundler -v '1.17.3'

In my case I had this error when building a docker container, so I just replaced RUN gem install bundler with RUN gem install bundler -v '1.16.1' in my Dockerfile.

[ahmad-shawky]

Fixed by using @vgladiyenko answer.

[rolandvarga]

@vgladiyenko thank you this helped with a time travel project!

[mrhardikjoshi]

If you do not want to update your project's ruby version due to some reason, you can install the last supported version of Bundler for Ruby < 2.3: (that should get rid of above error and will install older version of bundler)

gem install bundler -v '~>1'