Vagrantfile to reproduce issue in Phoenix configuration reload

Vagrantfile

# Start the VM with `vagrant up`
# After everything runs, enter the VM with `vagrant ssh`
# The app lives in the `blog` directory
# After running `mix deps.get && mix ecto.create`, `mix phoenix.server` should work
# The page will be accessible at 192.168.50.4:4000 from the host machine
#
# Some utility scripts are available in the project directory:
#
# * break_it.sh: breaks the app by modifying web/controllers/page_controller.ex
# * fix_it.sh: undo break_it.sh changes
# * catch_mode.sh: edits config/dev.exs to enable `catch_errors` and disable `debug_errors`
# * debug_mode.sh: edits config/dev.exs to restore `debug_errors`

Vagrant.configure(2) do |config|
  config.vm.box = "hashicorp/precise64"
  config.vm.network "private_network", ip: "192.168.50.4"
  config.vm.provision "shell", inline: <<-SHELL
    locale-gen en_US.UTF-8
    update-locale LANG=en_US.UTF-8
    sed -ie 's/LC_ALL="en_US"/LC_ALL="en_US.UTF-8"/' /etc/default/locale
    export LANG="en_US.UTF-8"
    export LC_ALL="en_US.UTF-8"
    wget https://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb && dpkg -i erlang-solutions_1.0_all.deb
    wget -q -O- https://deb.nodesource.com/setup | bash -
    apt-get install -y git nodejs elixir postgresql-9.1 inotify-tools
    npm install -g brunch
    su - postgres -c "echo alter user postgres with password \\'postgres\\' | xargs -d '\n' psql -U postgres -d postgres -c"
    su - vagrant -c 'mix archive.install --force https://github.com/phoenixframework/phoenix/releases/download/v1.0.0/phoenix_new-1.0.0.ez'
    su - vagrant -c 'mix phoenix.new blog'
    su - vagrant -c "sed -i -e 's/localhost/0.0.0.0/' blog/config/config.exs"
    su - vagrant -c "sed -i -e '11 a\  catch_errors: false,' blog/config/dev.exs"
    su - vagrant -c 'cd blog && npm install'
    su - vagrant -c "cd blog && echo sed -i -e \\'11s/true/false/\\' -e \\'12s/false/true/\\' config/dev.exs > catch_mode.sh"
    su - vagrant -c "cd blog && echo sed -i -e \\'11s/false/true/\\' -e \\'12s/true/false/\\' config/dev.exs > debug_mode.sh"
    su - vagrant -c "cd blog && echo sed -i -e \\'s/index.html/index.htm/\\' web/controllers/page_controller.ex > break_it.sh"
    su - vagrant -c "cd blog && echo sed -i -e \\'s/index.htm/index.html/\\' web/controllers/page_controller.ex > fix_it.sh"
    su - vagrant -c "cd blog && chmod +x catch_mode.sh debug_mode.sh break_it.sh fix_it.sh"
  SHELL
end