Discovered Issue with Bundler with Logging 1.2.2

explanation issue with logging 1.2.2

boot.rb patches the initialzer to memoize the Bundler.require
 

the preinitializer runs

The  environment.rb is loaded

logging is required before the Rails::Initializer.run

require 'logging'
Rails::Initializer.run do |config|
..some commands that use logging...
end

logging/utils.rb adds require! and require? methods to Kernel

it also inits two global variables:
  # Settiing this global variable to +false+ will disable rubygems from
  # being loaded at all.
  $use_rubygems = true unless defined? $use_rubygems

  # Setting this global variable to +true+ will cause an error message to be
  # displayed when a library cannot be required.
  $whiny_require = false unless defined? $whiny_require

logging.rb does a require? 'fastthread'

require? which is meant to suppress any exceptions when trying to load an OPTIONAL dependency calls require!

require! calls require 

  # call-seq:
  #    require!( string )
  #    require!( string, gem_version )
  #    require!( string, gem_name, gem_version )
  #
  # Attempt to the load the library named _string_ using the standard
  # Kernel#require method. If the library cannot be loaded then require
  # rubygems and retry the original require of the library.
  #
  # Raises a LoadError if the library cannot be loaded.
  #
  # If a _gem_version_ is given, then the rubygems +gem+ command is used to
  # load the specific version of the gem. The library _string_ is used for
  # the _gem_name_ if one is omitted.
  #
  def require!( string, *args )
    return require(string) if args.empty?

    name, version = *args
    version, name = name, string if name =~ %r/^[0-9<>=~]/
    version ||= '> 0'

    gem name, version
    require(string)
  rescue LoadError, NoMethodError
    retry if $use_rubygems and require('rubygems')
    if $whiny_require
      name ||= string
      $stderr.puts "Required library #{string.inspect} could not be loaded."
      $stderr.puts "Try:\tgem install #{name}"
    end
    raise
  end

require throws an exception of MissingSourceFile and enters the rescue block (Though I'm not sure why)

it hits the retry 

$use_rubygems by default is true, and require('rubygems') returns an empty array, which evaluates to true.

And thus enters an infinite loop.

Solutions:

put  the following:

$use_rubygems = false
$whiny_require = true

In your environment.rb before requiring logging

need to upgrade to latest version of logging, these methods have been updated on the version in master.