Logged by TraceLocation gem at 2019-06-08 01:28:53 +0900
https://github.com/yhirano55/trace_location

[Tracing events] C: Call, R: Return

C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/secure_password.rb:55 [ActiveModel::SecurePassword::ClassMethods.has_secure_password]
  C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations.rb:154 [ActiveModel::Validations::ClassMethods.validate]
  R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations.rb:175 [ActiveModel::Validations::ClassMethods.validate]
  C vendor/bundle/gems/activerecord-5.2.3/lib/active_record/validations/length.rb:19 [ActiveRecord::Validations::ClassMethods.validates_length_of]
    C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/helper_methods.rb:7 [ActiveModel::Validations::HelperMethods._merge_attributes]
    R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/helper_methods.rb:12 [ActiveModel::Validations::HelperMethods._merge_attributes]
    C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/with.rb:81 [ActiveModel::Validations::ClassMethods.validates_with]
      C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/length.rb:11 [ActiveModel::Validations::LengthValidator#initialize]
        C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validator.rb:138 [ActiveModel::Validations::LengthValidator#initialize]
          C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validator.rb:108 [ActiveModel::Validations::LengthValidator#initialize]
          R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validator.rb:110 [ActiveModel::Validations::LengthValidator#initialize]
          C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/length.rb:24 [ActiveModel::Validations::LengthValidator#check_validity!]
          R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/length.rb:38 [ActiveModel::Validations::LengthValidator#check_validity!]
        R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validator.rb:143 [ActiveModel::Validations::LengthValidator#initialize]
      R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/length.rb:22 [ActiveModel::Validations::LengthValidator#initialize]
      R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/with.rb:90 [User._validators]
      C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations.rb:154 [ActiveModel::Validations::ClassMethods.validate]
      R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations.rb:175 [ActiveModel::Validations::ClassMethods.validate]
    R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/with.rb:98 [ActiveModel::Validations::ClassMethods.validates_with]
  R vendor/bundle/gems/activerecord-5.2.3/lib/active_record/validations/length.rb:21 [ActiveRecord::Validations::ClassMethods.validates_length_of]
  C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/confirmation.rb:75 [ActiveModel::Validations::HelperMethods.validates_confirmation_of]
    C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/helper_methods.rb:7 [ActiveModel::Validations::HelperMethods._merge_attributes]
    R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/helper_methods.rb:12 [ActiveModel::Validations::HelperMethods._merge_attributes]
    C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/with.rb:81 [ActiveModel::Validations::ClassMethods.validates_with]
      C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/confirmation.rb:6 [ActiveModel::Validations::ConfirmationValidator#initialize]
        C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validator.rb:138 [ActiveModel::Validations::ConfirmationValidator#initialize]
          C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validator.rb:108 [ActiveModel::Validations::ConfirmationValidator#initialize]
          R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validator.rb:110 [ActiveModel::Validations::ConfirmationValidator#initialize]
          C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validator.rb:165 [ActiveModel::EachValidator#check_validity!]
          R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validator.rb:166 [ActiveModel::EachValidator#check_validity!]
        R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validator.rb:143 [ActiveModel::Validations::ConfirmationValidator#initialize]
        C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/confirmation.rb:21 [ActiveModel::Validations::ConfirmationValidator#setup!]
        R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/confirmation.rb:29 [ActiveModel::Validations::ConfirmationValidator#setup!]
      R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/confirmation.rb:9 [ActiveModel::Validations::ConfirmationValidator#initialize]
      R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/with.rb:90 [User._validators]
      C vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations.rb:154 [ActiveModel::Validations::ClassMethods.validate]
      R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations.rb:175 [ActiveModel::Validations::ClassMethods.validate]
    R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/with.rb:98 [ActiveModel::Validations::ClassMethods.validates_with]
  R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/validations/confirmation.rb:77 [ActiveModel::Validations::HelperMethods.validates_confirmation_of]
R vendor/bundle/gems/activemodel-5.2.3/lib/active_model/secure_password.rb:82 [ActiveModel::SecurePassword::ClassMethods.has_secure_password]

Result: [ActiveModel::Validations::ConfirmationValidator]