In Rails 6, setting belongs_to and required, but RSpec is still complaining about my not setting required

I’m using Rails 6.2, Ruby 2.7.5 and RSpec 3.10.1. When testing an association, I’m getting a strange error…

  Expected Voyage to have a belongs_to association called user (and for the record to fail validation if :user is unset; i.e., either the association should have been defined with `required: true`, or there should be a presence validation on :user)

I’m confused about what this error means. Below my model is

class Voyage < ActiveRecord::Base
    …
     belongs_to :user, required: true

And the spec is

describe Voyage, :type => :model do

  describe 'associations' do
    it { should belong_to :user }