如何检测导致 Rake 弃用警告的原因

Question

当我执行 bundle exec rake -T（或 bundle exec rake）时，我收到弃用警告：

Andrews-Air:nabu agrimm$ bundle exec rake --trace -T
[DEPRECATION] `last_comment` is deprecated.  Please use `last_description` instead.
[DEPRECATION] `last_comment` is deprecated.  Please use `last_description` instead.
[DEPRECATION] `last_comment` is deprecated.  Please use `last_description` instead.
[DEPRECATION] `last_comment` is deprecated.  Please use `last_description` instead.
[DEPRECATION] `last_comment` is deprecated.  Please use `last_description` instead.
[DEPRECATION] `last_comment` is deprecated.  Please use `last_description` instead.
[DEPRECATION] `last_comment` is deprecated.  Please use `last_description` instead.
[DEPRECATION] `last_comment` is deprecated.  Please use `last_description` instead.
[DEPRECATION] `last_comment` is deprecated.  Please use `last_description` instead.
[DEPRECATION] `last_comment` is deprecated.  Please use `last_description` instead.
rake about                               # List versions of all Rails frameworks and the environment
[snip]

虽然不是很相关，但这是 Gemfile：

source 'https://rubygems.org'

gem 'rails', '~> 3.2.22.2'

gem 'mysql2'

group :assets do
  gem 'coffee-rails', '~> 3.2.1'
  gem 'compass-rails'

  gem 'therubyracer'
  gem 'libv8'

  gem 'uglifier', '>= 1.0.3'
end

gem 'jquery-rails'
gem 'haml-rails'
gem 'to-csv', :require => 'to_csv'
gem 'kaminari'
gem 'oai'
gem 'analytical'

gem 'country-select'
gem 'activeadmin'
gem 'sass-rails',  '~> 3.2.3'
gem 'meta_search', '>= 1.1.0.pre'

gem 'devise', '2.2.3'
gem 'cancancan', '~> 1.12.0'

gem 'squeel'
gem 'nilify_blanks'

gem 'sunspot_rails'
gem 'sunspot_solr'

gem 'unicorn'

gem 'ruby-filemagic'

gem 'capistrano'
gem 'capistrano-ext'
gem 'capistrano-unicorn'

gem 'rollbar', '~> 2.8.3'
gem 'newrelic_rpm'

gem 'progress_bar'
gem 'paper_trail', '~> 2'
gem 'quiet_assets'
gem 'roo', '~> 2.1.0'
gem 'roo-xls', :github => 'roo-rb/roo-xls', :ref => '0a5ef88'
gem 'streamio-ffmpeg'
gem 'rake'

gem 'rmagick'

gem 'whenever', :require => false

group :development, :test do
  gem 'turn', '~> 0.8.3', :require => false
  gem 'rspec-rails', '~> 2.0'
  gem 'sextant'
  gem 'thin'

  gem 'spring'
  gem 'spring-commands-rspec'

  gem 'pry'
  gem 'pry-rails'

  gem 'letter_opener'

  gem 'guard-bundler'
  gem 'guard-rails'
  gem 'guard-rspec'
  gem 'guard-sunspot'

  gem 'rb-inotify', :require => RUBY_PLATFORM.include?('linux') ? 'rb-inotify' : false
  gem 'rb-fsevent', :require => RUBY_PLATFORM.include?('darwin') ? 'rb-fsevent' : false
end

group :development do
  gem 'annotate'
  gem 'binding_of_caller'
  gem 'better_errors'
  gem 'rubocop'
end

group :test do
  gem 'capybara'
  gem 'poltergeist'
  gem 'factory_girl_rails'
  gem 'database_cleaner'
  gem 'email_spec'
  gem 'launchy'
end

执行 git grep -i last_comment 表示它不在我的代码中 - 大概是在第三方 gem.

如何找出导致弃用警告的原因？

Answer 1

您可以递归地 grep 您的宝石，使用：

grep -r last_comment /path/to/gems

Answer 2

我发现在 rake-11.1.0/lib/rake/task_manager.rb:10 中将 warn 行修改为 raise 更容易。

对我来说，有问题的宝石是 rspec (fixed in 3.4.4) and rubocop (fixed in 0.38.0)。

Answer 3

尝试更新 gem "rspec-rails", "~> 3.4.4"，这为我解决了弃用警告。

Answer 4

不是rspec fault, the error comes from rake there was a commit a couple of weeks ago that added the warning, there was a follow up here。

似乎 Rspec 已经符合使用 last_description 而不是 last_comment 的规定。如果可能，尝试更新到 rspec-core Gem 的更新版本，就像@chris-scott 建议的那样。我运行成功了

bundle update rspec-core

Answer 5

如本 post 中所述，您可以：

# application.rb
ActiveSupport::Deprecation.debug = true

这将为您提供弃用的完整堆栈跟踪。

如何检测导致 Rake 弃用警告的原因

How to detect what causes a deprecation warning in Rake

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