Regression in cancan 3.0.0: ArgumentError using symbol-to-proc

symbol_to_proc_test.rb

# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"
  gem "cancancan", "3.0.0"
  gem "rails", "5.2.3"
  gem "sqlite3"
end

require 'active_record'
require 'cancancan'
require 'cancan/model_adapters/active_record_adapter'
require 'cancan/model_adapters/active_record_4_adapter'
require 'minitest/autorun'
require 'logger'

# This connection will do for database-independent bug reports.
ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Schema.define do
  create_table :tasks, force: true do |t|
    t.datetime :deleted_on
  end
end

class Task < ActiveRecord::Base
  # wrong number of arguments (given 1, expected 0)
  def deleted?
    deleted_on.present?
  end
end

class Ability
  include CanCan::Ability

  def initialize(user)
    can :edit, Task
    cannot :edit, Task, &:deleted?

    # Workaround: change the above to this form
    #
    # cannot :edit, Task do |t|
    #   t.deleted?
    # end
  end
end

class BugTest < Minitest::Test
  def test_association_stuff
    task = Task.create!
    ability = Ability.new(nil)
    assert ability.can?(:edit, task)
    # Error:
    # BugTest#test_association_stuff:
    # ArgumentError: wrong number of arguments (given 1, expected 0)
    #
    # Exception `ArgumentError' at
    # .../cancancan-3.0.0/lib/cancan/conditions_matcher.rb:24 -
    # wrong number of arguments (given 1, expected 0)
  end
end