Deprecation warning during deploy from Capistrano and Rails 7.2

[walterdavis]

I have been getting this warning while deploying to a server:

WARNING: key 'workers' is deprecated in /var/www/new_production/releases/20250227150142/config/production.sphinx.conf line 12; use 'default value' instead.

This file is auto-generated, and editing it manually doesn't seem to be a good idea.

Has anyone else seen this? Any suggestions to work around it?

TS: 5.6.0
Manticore: 6.3.8
Fairly ancient Ubuntu Linux server.

The Capistrano angle happens here, at the very end of my deploy script:

  after "deploy:published", "thinking_sphinx:configure"
  after "deploy:published", "thinking_sphinx:rebuild"
  after "deploy:published", "thinking_sphinx:restart"

The production.sphinx.conf file does not exist up until that point, it is not part of the deploy slug.

The config for TS is just this:

default: &default
  morphology: stem_en
  html_strip: true
  batch_size: 300
  charset_table: "0..9, A..Z->a..z, _, a..z, U+410..U+42F->U+430..U+44F, U+430..U+44F, U+23"

development:
  <<: *default

test:
  <<: *default

production:
  <<: *default
  batch_size: 100

staging:
  <<: *default
  mysql41: 9320

One of the three indices:

ThinkingSphinx::Index.define :document, :with => :real_time do
  scope { Document.where(id: Document.publicly.map{ |d| [d.id].concat(d.descendants.published.map(&:id)) }.flatten) }
  
  indexes title
  indexes teaser
  indexes body_html
  indexes author_display
  indexes tags_for_indexing

  has created_at, type: :timestamp
  has updated_at, type: :timestamp
end

None of these seem to have any settings which might influence that particular bit of inside-baseball configuration.

Please let me know if you need any other details.