FileUtils.mv being EXECUTED at compile time from a library method?

gistfile1.txt

# PART 1, THE EXCEPTION:
================================================================================
Recipe Compile Error in /var/chef/cache/cookbooks/r701-apache/recipes/mcran-server.rb
================================================================================

Errno::ENOENT
-------------
No such file or directory @ rb_file_s_rename - (/tmp/r701-apache-tmp-certs.pem, /etc/httpd/conf/../supporting_certs/certs.pem)

Cookbook Trace:
---------------
  /var/chef/cache/cookbooks/r701-apache/libraries/helpers.rb:69:in `cert_bundle_from_databag_items'
  /var/chef/cache/cookbooks/r701-apache/libraries/helpers.rb:33:in `install_supporting_certs'
  /var/chef/cache/cookbooks/r701-apache/recipes/mcran-server.rb:15:in `from_file'

Relevant File Content:
----------------------
/var/chef/cache/cookbooks/r701-apache/libraries/helpers.rb:

 68:
 69>>   FileUtils.mv("#{tmpdir}/#{tmpbundle}", node['r701-apache']['certificate_chain_file'])
 70:    return false
 71:  end
 72:

# PART 2: THE RECIPE
install_supporting_certs
# END

# PART 3: THE LIBRARY METHODS (libraries/helpers.rb)
def supporting_certs_dir
   return "#{node['r701-apache']['conf-dir']}/../supporting_certs"
end

def install_supporting_certs(bundle_filename='certs.pem', cert_ids=['ca-1', 'ca-3'])

  directory supporting_certs_dir do
    owner 'root'
    group 'root'
    mode '0755'
  end
  
  cert_bundle_from_databag_items(cert_ids)
  
end

def cert_bundle_from_databag_items(cert_ids)

  tmpbundle = '/tmp/r701-apache-tmp-certs.pem'
  if node['platform'] == 'windows'
    tmpbundle = '/windows/temp/r701-apache-tmp-certs.pem'
  end

  ::File.unlink(tmpbundle) if ::File.exist?(tmpbundle)

  cert_ids.each do |id|
    certdata = data_bag_item('supporting_certs', id)['certificate']
    ::File.open(tmpbundle, 'a') { |file| file.write(certdata) }
  end

  FileUtils.mv(tmpbundle, node['r701-apache']['certificate_chain_file'])
  
end
# END