Inertia, I am new in this of the healing bots, I have a problem and it is difficult for me to reach the solution. Once inside the directory / drphil $ I try with $ bundle install and the following happens >>>>

Installing ffi 1.9.23 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    /usr/bin/ruby2.1 extconf.rb
Cannot allocate memory - /usr/bin/ruby2.1 extconf.rb 2>&1

Gem files will remain installed in /var/lib/gems/2.1.0/gems/ffi-1.9.23 for
inspection.
Results logged to
/var/lib/gems/2.1.0/extensions/x86_64-linux/2.1.0/ffi-1.9.23/gem_make.out

An error occurred while installing ffi (1.9.23), and Bundler cannot
continue.
Make sure that `gem install ffi -v '1.9.23'` succeeds before bundling.

In Gemfile:
  radiator was resolved to 0.4.1, which depends on
    ffi

I can not solve, I tried update and aupgrade Bundle. Thank you so much.