google-api-ruby-client: Batch per-request authentication is ignored

Environment details

• OS: Ubuntu, linux last
• Ruby version: ruby 2.4.5
• Gem name and version: google-api-client ~> .030

Steps to reproduce

  1. events = []
    page_token = nil
    access_tokens = []
    calendar = Calendar::CalendarService.new

    GoogleIdentity.last(2).each do |e|
      access_tokens << e.fresh_token
    end

    calendar.batch do |calendar|
      access_tokens.each do |token|
        calendar.list_events('primary', options: { authorization: GoogleAccessToken.new(token) }, page_token: page_token, q: query, max_results: 2500, time_min: min_date, show_deleted: show_deleted) do |response, error|
          p 'i=' * 10
          p token
          p 'response=' * 10
          p response
          p 'error=' * 10
          p error
        end
      end
    end

The response is

Error - #<Google::Apis::ClientError: dailyLimitExceededUnreg: Daily Limit for Unauthenticated Use Exceeded. Continued use requires signup.>