# File lib/bundler/installer/parallel_installer.rb, line 93
    def call
      # Since `autoload` has the potential for threading issues on 1.8.7
      # TODO:  remove in bundler 2.0
      require "bundler/gem_remote_fetcher" if RUBY_VERSION < "1.9"

      check_for_corrupt_lockfile

      if @size > 1
        install_with_worker
      else
        install_serially
      end

      handle_error if @specs.any?(&:failed?)
      @specs
    ensure
      worker_pool && worker_pool.stop
    end