Use the Ruby 1.8 hash syntax.

Yes we still support Ruby 1.8 😢

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    devise (2.2.2)
+    devise (2.2.3)
       bcrypt-ruby (~> 3.0)
       orm_adapter (~> 0.1)
       railties (~> 3.1)

lib/devise/models/authenticatable.rb

@@ -215,7 +215,7 @@ module Devise
         # Example:
         #
         #   def self.find_for_authentication(tainted_conditions)
-        #     find_first_by_auth_conditions(tainted_conditions, active: true)
+        #     find_first_by_auth_conditions(tainted_conditions, :active => true)
         #   end
         #
         # Finally, notice that Devise also queries for users in other scenarios

test/models/authenticatable_test.rb

@@ -6,8 +6,8 @@ class AuthenticatableTest < ActiveSupport::TestCase
   end
 
   test 'find_first_by_auth_conditions allows custom filtering parameters' do
-    user = User.create!(email: "example@example.com", password: "123456")
-    assert_equal User.find_first_by_auth_conditions({ email: "example@example.com" }), user
-    assert_equal User.find_first_by_auth_conditions({ email: "example@example.com" }, id: user.id + 1), nil
+    user = User.create!(:email => "example@example.com", :password => "123456")
+    assert_equal User.find_first_by_auth_conditions({ :email => "example@example.com" }), user
+    assert_equal User.find_first_by_auth_conditions({ :email => "example@example.com" }, :id => user.id + 1), nil
   end
 end