在Ubuntu 14.04服务器上运行cap production deploy时出现此错误。
这似乎是一个类似的问题，但我已经在这里尝试了所有答案，但无法使其正常工作Could not find thread_safe-0.3.0 in any of the sources。
(Backtrace restricted to imported tasks)
cap aborted!
SSHKit::Runner::ExecuteError: Exception while executing as root@*serveripaddress*: bundle exit status: 7
bundle stdout: Could not find thread_safe-0.3.5 in any of the sources
bundle stderr: Nothing written
SSHKit::Command::Failed: bundle exit status: 7
bundle stdout: Could not find thread_safe-0.3.5 in any of the sources
bundle stderr: Nothing written
Tasks: TOP => deploy:updated => bundler:install
(See full trace by running task with --trace)
The deploy has failed with an error: Exception while executing as root@*serveripaddress*: bundle exit status: 7
bundle stdout: Could not find thread_safe-0.3.5 in any of the sources
bundle stderr: Nothing written
更新：我已尝试部署到Heroku并收到类似错误。如果有人有任何建议，那就太棒了。
$ git push heroku master
Counting objects: 10017, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (7613/7613), done.
Writing objects: 100% (10017/10017), 22.27 MiB | 87.00 KiB/s, done.
Total 10017 (delta 2426), reused 7631 (delta 1548)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Warning: Multiple default buildpacks reported the ability to handle this app. The first buildpack in the list below will be used.
remote: Detected buildpacks: Ruby, Node.js
remote: See https://devcenter.heroku.com/articles/buildpacks#buildpack-detect-order
remote: -----> Ruby app detected
remote: -----> Compiling Ruby/Rails
remote: -----> Using Ruby version: ruby-2.0.0
remote: -----> Installing dependencies using 1.7.12
remote: Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
remote: Some gems seem to be missing from your vendor/cache directory.
remote: Could not find thread_safe-0.3.5 in any of the sources
remote: Bundler Output: Some gems seem to be missing from your vendor/cache directory.
remote: Could not find thread_safe-0.3.5 in any of the sources
remote: !
remote: ! Failed to install gems via Bundler.
remote: !
remote:
remote: ! Push rejected, failed to compile Ruby app
remote:
remote: Verifying deploy...
remote:
remote: ! Push rejected to mysterious-badlands-3241.
remote: