[DRE-maint] Bug#918609: ruby-test-after-commit FTBFS with rails 5.2

[Adrian Bunk]

Source: ruby-test-after-commit
Version: 1.0.0-1
Severity: serious
Tags: ftbfs buster sid

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/ruby-test-after-commit.html

...
┌──────────────────────────────────────────────────────────────────────────────┐
│ Run tests for ruby2.5 from debian/ruby-tests.rake                            │
└──────────────────────────────────────────────────────────────────────────────┘

RUBYLIB=/build/1st/ruby-test-after-commit-1.0.0/debian/ruby-test-after-commit/usr/lib/ruby/vendor_ruby:. GEM_PATH=debian/ruby-test-after-commit/usr/share/rubygems-integration/all:/var/lib/gems/2.5.0:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.5.0:/usr/share/rubygems-integration/2.5.0:/usr/share/rubygems-integration/all ruby2.5 -S rake -f debian/ruby-tests.rake
/usr/bin/ruby2.5 /usr/bin/rspec --pattern ./spec/\*\*/\*_spec.rb --format documentation

An error occurred while loading ./spec/test_after_commit_spec.rb.
Failure/Error: ActiveRecord::Base.raise_in_transactional_callbacks = true

NoMethodError:
  undefined method `raise_in_transactional_callbacks=' for ActiveRecord::Base:Class
# ./spec/database.rb:9:in `<top (required)>'
# ./spec/spec_helper.rb:1:in `<top (required)>'
# ./spec/test_after_commit_spec.rb:1:in `<top (required)>'
No examples found.

Finished in 0.00041 seconds (files took 5.35 seconds to load)
0 examples, 0 failures, 1 error occurred outside of examples

/usr/bin/ruby2.5 /usr/bin/rspec --pattern ./spec/\*\*/\*_spec.rb --format documentation failed
ERROR: Test "ruby2.5" failed. Exiting.
dh_auto_install: dh_ruby --install /build/1st/ruby-test-after-commit-1.0.0/debian/ruby-test-after-commit returned exit code 1
make: *** [debian/rules:6: binary] Error 1