部署app时，capistrano错误发生在production.log。
Compiled signup.css (30ms) (pid 31797)
Warning. Error encountered while saving cache /home/deployer/apps/example.com/releases/20140315211501/tmp/cache/sass/c76a96d592cb37dc7092a4e2f10ad8d3d22bcc8b/user_sessions.css.scssc: can't dump anonymous class #<Class:0x0000000356d120>
Compiled user_sessions/user_sessions.css (16ms) (pid 31797)
Compiled user_sessions.css (20ms) (pid 31797)
Warning. Error encountered while saving cache /home/deployer/apps/example.com/releases/20140315211501/tmp/cache/sass/a59f84087c66a48b1521281da138ce9e3ed4c217/welcome.css.scssc: can't dump anonymous class #<Class:0x0000000356d120>
这是我正在使用的Gemfile.lock。
GIT
remote: git://github.com/tomazzlender/letter_opener.git
revision: 29b17fefe87b8fdc7ead987dbfabe355b59ff684
specs:
letter_opener (0.0.2)
launchy
GIT
remote: git://github.com/tomazzlender/premailer.git
revision: 88af5e6f60ac78ef1d70d6f0a6f4b7612d2c5f7a
specs:
premailer (1.7.3)
css_parser (>= 1.1.9)
htmlentities (>= 4.0.0)
GIT
remote: git://github.com/tomazzlender/snapshot.git
revision: 0f0f3fd024bf5a3a846e999b845803ae61d870c0
specs:
snapshot (1.1.0)
GIT
remote: https://github.com/37signals/mail_view.git
revision: c8cc1315026ce85973ef56e628ac2e38a7a95563
specs:
mail_view (1.0.1)
tilt
GIT
remote: https://github.com/thoughtbot/capybara-webkit.git
revision: 11c596f7a06dbda123c077440f9275905f89e869
specs:
capybara-webkit (0.13.0)
capybara (>= 2.0.1)
json
GEM
remote: https://rubygems.org/
specs:
actionmailer (3.2.17)
actionpack (= 3.2.17)
mail (~> 2.5.4)
actionpack (3.2.17)
activemodel (= 3.2.17)
activesupport (= 3.2.17)
builder (~> 3.0.0)
erubis (~> 2.7.0)
journey (~> 1.0.4)
rack (~> 1.4.5)
rack-cache (~> 1.2)
rack-test (~> 0.6.1)
sprockets (~> 2.2.1)
active_attr (0.7.0)
activemodel (>= 3.0.2, < 4.1)
activesupport (>= 3.0.2, < 4.1)
activemodel (3.2.17)
activesupport (= 3.2.17)
builder (~> 3.0.0)
activerecord (3.2.17)
activemodel (= 3.2.17)
activesupport (= 3.2.17)
arel (~> 3.0.2)
tzinfo (~> 0.3.29)
activeresource (3.2.17)
activemodel (= 3.2.17)
activesupport (= 3.2.17)
activesupport (3.2.17)
i18n (~> 0.6, >= 0.6.4)
multi_json (~> 1.0)
addressable (2.2.7)
ansi (1.4.3)
arel (3.0.3)
authlogic (3.1.0)
activerecord (>= 3.0.7)
activerecord (>= 3.0.7)
builder (3.0.4)
capistrano (2.9.0)
highline
net-scp (>= 1.0.0)
net-sftp (>= 2.0.0)
net-ssh (>= 2.0.14)
net-ssh-gateway (>= 1.1.0)
capybara (2.0.2)
mime-types (>= 1.16)
nokogiri (>= 1.3.3)
rack (>= 1.0.0)
rack-test (>= 0.5.4)
selenium-webdriver (~> 2.0)
xpath (~> 1.0.0)
childprocess (0.3.6)
ffi (~> 1.0, >= 1.0.6)
chronic (0.6.7)
coffee-rails (3.2.2)
coffee-script (>= 2.2.0)
railties (~> 3.2.0)
coffee-script (2.2.0)
coffee-script-source
execjs
coffee-script-source (1.2.0)
css_parser (1.2.6)
addressable
rdoc
erubis (2.7.0)
eventmachine (1.0.0)
exception_notification (3.0.0)
actionmailer (>= 3.0.4)
tinder (~> 1.8)
execjs (1.3.0)
multi_json (~> 1.0)
faraday (0.8.4)
multipart-post (~> 1.1)
faraday_middleware (0.9.0)
faraday (>= 0.7.4, < 0.9)
ffi (1.2.0)
hashie (1.2.0)
highline (1.6.11)
hike (1.2.3)
htmlentities (4.3.1)
http_parser.rb (0.5.3)
i18n (0.6.9)
journey (1.0.4)
jquery-rails (2.0.3)
railties (>= 3.1.0, < 5.0)
thor (~> 0.14)
json (1.8.1)
kgio (2.7.2)
launchy (2.1.0)
addressable (~> 2.2.6)
libwebsocket (0.1.7.1)
addressable
websocket
mail (2.5.4)
mime-types (~> 1.16)
treetop (~> 1.4.8)
marginalia (1.1.0)
actionpack (>= 2.3, < 3.3)
activerecord (>= 2.3, < 3.3)
meta_request (0.2.1)
rack-contrib
rails
mime-types (1.25.1)
minitest (4.3.3)
minitest-capybara (0.1.0)
capybara (>= 1.0)
minitest-matchers (>= 1.2)
minitest-matchers (1.2.0)
minitest (>= 2.5.0)
minitest-rails (0.3)
minitest (~> 4.0)
rails (~> 3.0)
minitest-rails-capybara (0.1)
minitest-capybara (~> 0.1)
minitest-rails (~> 0.1)
multi_json (1.9.0)
multipart-post (1.1.5)
net-scp (1.0.4)
net-ssh (>= 1.99.1)
net-sftp (2.0.5)
net-ssh (>= 2.0.9)
net-ssh (2.3.0)
net-ssh-gateway (1.1.0)
net-ssh (>= 1.99.1)
nokogiri (1.5.0)
pg (0.17.1)
polyglot (0.3.4)
premailer-rails3 (1.3.1)
premailer (~> 1.7)
rails (~> 3)
psych (1.3.4)
quiet_assets (1.0.1)
railties (~> 3.1)
rack (1.4.5)
rack-cache (1.2)
rack (>= 0.4)
rack-contrib (1.1.0)
rack (>= 0.9.1)
rack-ssl (1.3.3)
rack
rack-test (0.6.2)
rack (>= 1.0)
rails (3.2.17)
actionmailer (= 3.2.17)
actionpack (= 3.2.17)
activerecord (= 3.2.17)
activeresource (= 3.2.17)
activesupport (= 3.2.17)
bundler (~> 1.0)
railties (= 3.2.17)
railties (3.2.17)
actionpack (= 3.2.17)
activesupport (= 3.2.17)
rack-ssl (~> 1.3.2)
rake (>= 0.8.7)
rdoc (~> 3.4)
thor (>= 0.14.6, < 2.0)
raindrops (0.8.0)
rake (10.1.1)
rdoc (3.12.2)
json (~> 1.4)
ruby-ole (1.2.11.3)
rubyzip (0.9.6.1)
sass (3.2.6)
sass-rails (3.2.6)
railties (~> 3.2.0)
sass (>= 3.1.10)
tilt (~> 1.3)
selenium-webdriver (2.27.2)
childprocess (>= 0.2.5)
libwebsocket (~> 0.1.3)
multi_json (~> 1.0)
rubyzip
sheets (1.1.0)
nokogiri (>= 1.4.3.1)
rubyzip (>= 0.9.4)
spreadsheet (>= 0.6.5.2)
simple_oauth (0.1.9)
spreadsheet (0.6.8)
ruby-ole (>= 1.0)
sprockets (2.2.2)
hike (~> 1.2)
multi_json (~> 1.0)
rack (~> 1.0)
tilt (~> 1.1, != 1.3.0)
thor (0.18.1)
tilt (1.4.1)
tinder (1.9.1)
eventmachine (>= 0.12.0, < 2)
faraday (~> 0.8)
faraday_middleware (~> 0.8)
hashie (~> 1.0)
json (~> 1.6)
mime-types (~> 1.16)
multi_json (~> 1.0)
multipart-post (~> 1.1)
twitter-stream (~> 0.1)
treetop (1.4.15)
polyglot
polyglot (>= 0.3.1)
turn (0.9.6)
ansi
twitter-stream (0.1.16)
eventmachine (>= 0.12.8)
http_parser.rb (~> 0.5.1)
simple_oauth (~> 0.1.4)
tzinfo (0.3.39)
uglifier (1.2.3)
execjs (>= 0.3.0)
multi_json (>= 1.0.2)
unicode_utils (1.3.0)
unicorn (4.2.0)
kgio (~> 2.6)
rack
raindrops (~> 0.7)
websocket (1.0.6)
whenever (0.7.3)
activesupport (>= 2.3.4)
chronic (~> 0.6.3)
will_paginate (3.0.3)
xpath (1.0.0)
nokogiri (~> 1.3)
PLATFORMS
ruby
DEPENDENCIES
active_attr
authlogic
capistrano
capybara
capybara-webkit!
coffee-rails (~> 3.2.1)
exception_notification (= 3.0.0)
jquery-rails (~> 2.0.1)
launchy
letter_opener!
mail_view!
marginalia
meta_request (= 0.2.1)
minitest-rails
minitest-rails-capybara
nokogiri
pg
premailer!
premailer-rails3
psych
quiet_assets
rails (= 3.2.17)
sass (= 3.2.6)
sass-rails (~> 3.2.3)
sheets
snapshot!
turn
uglifier (>= 1.0.3)
unicode_utils
unicorn
whenever
will_paginate
导致此错误的原因是什么？
答案 0 :(得分：17)
这是当前版本的Sass的已知错误，更新sass样式表将导致缓存错误，因为Sprockets导入器未正确序列化。有关错误报告，请参阅this。
答案 1 :(得分：2)
这是链接中的一个错误，但如果像我一样使用较旧版本的Rails（3.2），则可以使用不同版本的sass来修复错误。这个人能够使用sass 3.1.x：https://github.com/rails/sass-rails/issues/242#issuecomment-66231135
那里提到的线程提供了一些很好的上下文和解释如何处理解决问题或解决无法升级到更新的固定版本的链接器。
基本上，在支持Rails 3.2.x的时候使用sass / sass-rails / sprockets。