有新的遗物并且工作正常，但现在推送在资产预编译期间失败了。它与'newrelic_plugin'gem有关，因为从我的gemfile中删除该行并重新绑定后，push工作正常。
我启用了heroku实验室'user-env-compile'，不确定它是否相关。
这是完整的堆栈跟踪;任何帮助将不胜感激：
Your bundle is complete! It was installed into ./vendor/bundle
Cleaning up the bundler cache.
-----> Writing config/database.yml to read from DATABASE_URL
-----> Preparing app for Rails asset pipeline
Running: rake assets:precompile
** Invoke assets:precompile (first_time)
** Invoke assets:environment (first_time)
** Execute assets:environment
** Invoke environment (first_time)
** Execute environment
rake aborted!
uninitialized constant NewRelic::Logger::INFO
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/gems/newrelic_rpm-3.6.6.147/lib/new_relic/agent/agent_logger.rb:131:in `log_level_for'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/gems/newrelic_rpm-3.6.6.147/lib/new_relic/agent/agent_logger.rb:119:in `set_log_level!'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/gems/newrelic_rpm-3.6.6.147/lib/new_relic/agent/agent_logger.rb:13:in `initialize'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/gems/newrelic_rpm-3.6.6.147/lib/new_relic/control/instance_methods.rb:62:in `new'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/gems/newrelic_rpm-3.6.6.147/lib/new_relic/control/instance_methods.rb:62:in `init_plugin'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/gems/newrelic_rpm-3.6.6.147/lib/newrelic_rpm.rb:40:in `block in <class:Railtie>'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/bundler/gems/rails-0b3a078a2481/railties/lib/rails/initializable.rb:30:in `instance_exec'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/bundler/gems/rails-0b3a078a2481/railties/lib/rails/initializable.rb:30:in `run'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/bundler/gems/rails-0b3a078a2481/railties/lib/rails/initializable.rb:55:in `block in run_initializers'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/bundler/gems/rails-0b3a078a2481/railties/lib/rails/initializable.rb:54:in `run_initializers'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/bundler/gems/rails-0b3a078a2481/railties/lib/rails/application.rb:257:in `initialize!'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/bundler/gems/rails-0b3a078a2481/railties/lib/rails/railtie.rb:194:in `public_send'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/bundler/gems/rails-0b3a078a2481/railties/lib/rails/railtie.rb:194:in `method_missing'
/tmp/build_k8jk6mc5x6ch/config/environment.rb:5:in `<top (required)>'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/bundler/gems/rails-0b3a078a2481/railties/lib/rails/application.rb:233:in `require_environment!'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/bundler/gems/rails-0b3a078a2481/railties/lib/rails/application.rb:295:in `block in run_tasks_blocks'
/tmp/build_k8jk6mc5x6ch/vendor/bundle/ruby/2.0.0/gems/sprockets-rails-2.0.0/lib/sprockets/rails/task.rb:54:in `block (2 levels) in define'
Tasks: TOP => environment
(See full trace by running task with --trace)
!
! Precompiling assets failed.