```ruby
module Travis
  module Scheduler
    module Jobs
      module Capacity
        class Plan < Base
          def applicable?
            on_metered_plan? || owners.subscribed?
          end

          def report(status, job)
            super.merge(max: max)
          end

          def accept?(job)
            super if !on_metered_plan? || billing_allowance[allowance_key(job)]
          end

          private

            def max
              @max ||= on_metered_plan? ? billing_allowance['concurrency_limit'] : owners.paid_capacity
            end

            def allowance_key(job)
              job.public? ? 'public_repos' : 'private_repos'
            end
        end
      end
    end
  end
end
```

Fix stuck jobs due to billing
user
```ruby
module Travis
  module Scheduler
    module Jobs
      module Capacity
        class Plan < Base
          def applicable?
            on_metered_plan? || owners.subscribed?
          end

          def report(status, job)
            super.merge(max: max)
          end

          def accept?(job)
            super if !on_metered_plan? || billing_allowed?(job)
          end

          private

            def max
              @max ||= on_metered_plan? ? billing_allowance['concurrency_limit'] : owners.paid_capacity
            end

            def billing_allowed?(job)
              puts billing_allowance[allowance_key(job)]
              return true if billing_allowance[allowance_key(job)]

              # Cancel job if it has not been queued for more than a day due to
              # billing allowance
              if job.created_at < (Time.now - 1.day)
                payload = { id: job.id, source: 'scheduler' }
                Hub.push('job:cancel', payload)
              end

              false
            end

            def allowance_key(job)
              job.public? ? 'public_repos' : 'private_repos'
            end
        end
      end
    end
  end
end
```
assistant