[DRE-maint] Bug#966551: autopkgtest fails with rails 6 in experimental

[Kartik Kulkarni]

Package: ruby-ammeter
Version: 1.1.4-2
Severity: important
User: pkg-ruby-extras-maintainers at lists.alioth.debian.org
Usertags: rails6-transition

Hi,

This package's autopkgtest and rebuilds failed with rails 6 currently in
experimental. rails 6 will be uploaded to unstable in a weeks time, so
please make sure this package is ready for rails 6. The severity of
this bug will be raised to serious after rails 6 is uploaded to
unstable.

Failures:
  1)
have_correct_syntax erb files checks if simple ERB file has a proper syntax
     Failure/Error: view =
ActionView::Template::Handlers::ERB.call(OpenStruct.new(:source =>
code))

     ArgumentError:
       wrong number of arguments (given 1, expected 2)
     # /usr/share/rubygems-integration/all/gems/actionview-6.0.3.2/lib/action_view/template/handlers/erb.rb:31:in
`call'
     # ./lib/ammeter/rspec/generator/matchers/have_correct_syntax.rb:33:in
`block (2 levels) in <top (required)>'
.
.

two more similar errors.

Full log : https://salsa.debian.org/snippets/467
Upstream already has an open issue:
https://github.com/alexrothenberg/ammeter/issues/61

Regards,
Kartik Kulkarni