$ git push heroku master
Counting objects: 213, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (205/205), done.
Writing objects: 100% (213/213), 90.83 KiB | 0 bytes/s, done.
Total 213 (delta 123), reused 0 (delta 0)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Ruby app detected
remote: -----> Compiling Ruby/Rails
remote: -----> Using Ruby version: ruby-2.4.4
remote: -----> Installing dependencies using bundler 1.15.2
remote: Running: bundle install --without
## 省略 ##
remote: -----> Installing node-v8.10.0-linux-x64
remote: -----> Installing yarn-v1.5.1
remote: -----> Detecting rake tasks
remote: -----> Preparing app for Rails asset pipeline
remote: Running: rake assets:precompile
remote: yarn install v1.5.1
remote: [1/4] Resolving packages...
remote: [2/4] Fetching packages...
remote: info There appears to be trouble with your network connection. Retrying...
remote: I, [2018-10-08T04:42:21.754233 #867] INFO -- : Writing /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/public/assets/application-d01c56d3d12dfb0fcefff02027e25e98ca40c833dad88e3b2f71cde25d5d28fe.js
remote: I, [2018-10-08T04:42:21.754901 #867] INFO -- : Writing /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/public/assets/application-d01c56d3d12dfb0fcefff02027e25e98ca40c833dad88e3b2f71cde25d5d28fe.js.gz
remote: I, [2018-10-08T04:42:35.317549 #867] INFO -- : Writing /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/public/assets/application-8f94444af718339458ead213c1af2890bcb5388de6282ae7baab395965de1244.css
remote: I, [2018-10-08T04:42:35.318391 #867] INFO -- : Writing /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/public/assets/application-8f94444af718339458ead213c1af2890bcb5388de6282ae7baab395965de1244.css.gz
remote: Compiling…
remote: Compilation failed:
remote: /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/vendor/bundle/ruby/2.4.0/bundler/gems/webpacker-6a59354abcd1/lib/webpacker/webpack_runner.rb:11:in `exec': No such file or directory - /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/node_modules/.bin/webpack (Errno::ENOENT)
remote: from /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/vendor/bundle/ruby/2.4.0/bundler/gems/webpacker-6a59354abcd1/lib/webpacker/webpack_runner.rb:11:in `block in run'
remote: from /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/vendor/bundle/ruby/2.4.0/bundler/gems/webpacker-6a59354abcd1/lib/webpacker/webpack_runner.rb:10:in `chdir'
remote: from /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/vendor/bundle/ruby/2.4.0/bundler/gems/webpacker-6a59354abcd1/lib/webpacker/webpack_runner.rb:10:in `run
remote: from /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/vendor/bundle/ruby/2.4.0/bundler/gems/webpacker-6a59354abcd1/lib/webpacker/runner.rb:6:in `run'
remote: from /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/bin/webpack:18:in `block in <main>'
remote: from /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/bin/webpack:17:in `chdir'
remote: from /tmp/build_a1dd18133eb9ea003adb18d58b2f55fc/bin/webpack:17:in `<main>'
remote:
remote:
remote:
remote: !
remote: ! Precompiling assets failed.
remote: !
remote: ! Push rejected, failed to compile Ruby app.
remote:
remote: ! Push failed
remote: Verifying deploy...
remote:
remote: ! Push rejected to myapp.
remote:
To https://git.heroku.com/myapp.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/myapp.git'