Incompatible with RedmineSidekiq and/or Redmine 2.5

[amse2000]

Together with the use of sidekiq there seems to be a problem.
Or the problem comes from newer safe attributes in Redmine > 2.5

ActionView::Template::Error (delay is defined by ActiveRecord):

Using https://github.com/ogom/redmine_sidekiq it says:
IMPORTANT: Anyone trying to use the sidekiq :delay method, use :sidekiq_delay instead because for former has clashes with Redmine safe attributes. There is NO change for :delay_for and :delay_until methods.