• follow the instructions to install TFM from source
• until the following step (on CentOS):
  

  scl enable tfm 'RAILS_ENV=production bundle exec rake db:seed assets:precompile locale:pack'
  

Expected
successful execution of the command

Actual
Right after "All seed files executed" I get the following error:

Error parsing app/models/concerns/facets/managed_host_extensions.rb:15
               hash["#{facet_definition.name}_attributes"] = facet.attributes.reject { |key, _| %w(created_at updated_at).include? key }

 #<TypeError: can't convert Array into String> in
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/po_entry.rb:226:in `+'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/po_entry.rb:226:in `set_value'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/parser/ruby.rb:90:in `set_current_attribute'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/parser/ruby.rb:264:in `block in parse_source'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/parser/ruby.rb:57:in `parse'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/parser/ruby.rb:242:in `parse_source'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/parser/ruby.rb:217:in `parse'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/parser/ruby.rb:134:in `parse'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/xgettext.rb:367:in `block in parse_path'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/xgettext.rb:360:in `each'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/xgettext.rb:360:in `parse_path'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/xgettext.rb:168:in `block in parse'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/xgettext.rb:166:in `each'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/xgettext.rb:166:in `parse'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/xgettext.rb:217:in `generate_pot'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/xgettext.rb:151:in `run'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/xgettext.rb:34:in `run'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/task.rb:330:in `xgettext'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/task.rb:314:in `create_pot'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext-3.2.1/lib/gettext/tools/task.rb:306:in `block in define_pot_file_task'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:240:in `call'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:240:in `block in execute'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:235:in `each'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:235:in `execute'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
/opt/rh/ruby193/root/usr/share/ruby/monitor.rb:211:in `mon_synchronize'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:172:in `invoke_with_call_chain'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:201:in `block in invoke_prerequisites'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:199:in `each'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:199:in `invoke_prerequisites'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:178:in `block in invoke_with_call_chain'
/opt/rh/ruby193/root/usr/share/ruby/monitor.rb:211:in `mon_synchronize'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:172:in `invoke_with_call_chain'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:201:in `block in invoke_prerequisites'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:199:in `each'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:199:in `invoke_prerequisites'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:178:in `block in invoke_with_call_chain'
/opt/rh/ruby193/root/usr/share/ruby/monitor.rb:211:in `mon_synchronize'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:172:in `invoke_with_call_chain'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:201:in `block in invoke_prerequisites'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:199:in `each'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:199:in `invoke_prerequisites'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:178:in `block in invoke_with_call_chain'
/opt/rh/ruby193/root/usr/share/ruby/monitor.rb:211:in `mon_synchronize'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:172:in `invoke_with_call_chain'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:201:in `block in invoke_prerequisites'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:199:in `each'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:199:in `invoke_prerequisites'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:178:in `block in invoke_with_call_chain'
/opt/rh/ruby193/root/usr/share/ruby/monitor.rb:211:in `mon_synchronize'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:172:in `invoke_with_call_chain'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:201:in `block in invoke_prerequisites'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:199:in `each'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:199:in `invoke_prerequisites'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:178:in `block in invoke_with_call_chain'
/opt/rh/ruby193/root/usr/share/ruby/monitor.rb:211:in `mon_synchronize'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:172:in `invoke_with_call_chain'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:165:in `invoke'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/gettext_i18n_rails-1.4.0/lib/gettext_i18n_rails/tasks.rb:54:in `block (2 levels) in <top (required)>'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:240:in `call'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:240:in `block in execute'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:235:in `each'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:235:in `execute'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
/opt/rh/ruby193/root/usr/share/ruby/monitor.rb:211:in `mon_synchronize'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:172:in `invoke_with_call_chain'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:201:in `block in invoke_prerequisites'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:199:in `each'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:199:in `invoke_prerequisites'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:178:in `block in invoke_with_call_chain'
/opt/rh/ruby193/root/usr/share/ruby/monitor.rb:211:in `mon_synchronize'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:172:in `invoke_with_call_chain'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/task.rb:165:in `invoke'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/application.rb:150:in `invoke_task'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/application.rb:106:in `each'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/application.rb:106:in `block in top_level'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/application.rb:115:in `run_with_threads'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/application.rb:176:in `standard_exception_handling'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/lib/rake/application.rb:75:in `run'
/home/vagrant/foreman/vendor/ruby/1.9.1/gems/rake-10.5.0/bin/rake:33:in `<top (required)>'
/home/vagrant/foreman/vendor/ruby/1.9.1/bin/rake:23:in `load'
/home/vagrant/foreman/vendor/ruby/1.9.1/bin/rake:23:in `<main>'

The result of bundle show follows below:

$ scl enable tfm 'bundle show'
Gems included by the bundle:
  * CFPropertyList (2.2.8)
  * ace-rails-ap (4.0.1)
  * actionmailer (4.1.5)
  * actionpack (4.1.5)
  * actionview (4.1.5)
  * activemodel (4.1.5)
  * activerecord (4.1.5)
  * activerecord-session_store (0.1.2)
  * activesupport (4.1.5)
  * addressable (2.4.0)
  * ancestry (2.1.0)
  * apipie-rails (0.3.5)
  * arel (5.0.1.20140414130214)
  * ast (2.2.0)
  * astrolabe (1.3.1)
  * audited (4.2.0)
  * audited-activerecord (4.2.0)
  * autoparse (0.3.3)
  * autoprefixer-rails (5.2.1.3)
  * awesome_print (1.6.1)
  * bootstrap-sass (3.3.6)
  * builder (3.2.2)
  * bullet (5.0.0)
  * bundler (1.11.2)
  * coderay (1.1.0)
  * coffee-rails (4.1.1)
  * coffee-script (2.4.1)
  * coffee-script-source (1.10.0)
  * concurrent-ruby (1.0.0)
  * deep_cloneable (2.2.0)
  * erubis (2.7.0)
  * excon (0.45.4)
  * execjs (2.4.0)
  * extlib (0.9.16)
  * facter (2.4.6)
  * faraday (0.9.2)
  * fast_gettext (0.9.2)
  * fission (0.5.0)
  * flot-rails (0.0.3)
  * fog (1.37.0)
  * fog-aliyun (0.1.0)
  * fog-atmos (0.1.0)
  * fog-aws (0.8.1)
  * fog-brightbox (0.10.1)
  * fog-core (1.35.0)
  * fog-dynect (0.0.2)
  * fog-ecloud (0.3.0)
  * fog-google (0.1.0)
  * fog-json (1.0.2)
  * fog-libvirt (0.0.3)
  * fog-local (0.2.1)
  * fog-powerdns (0.1.1)
  * fog-profitbricks (0.0.5)
  * fog-radosgw (0.0.5)
  * fog-riakcs (0.1.0)
  * fog-sakuracloud (1.7.5)
  * fog-serverlove (0.1.2)
  * fog-softlayer (1.0.3)
  * fog-storm_on_demand (0.1.1)
  * fog-terremark (0.1.0)
  * fog-vmfusion (0.1.0)
  * fog-voxel (0.1.0)
  * fog-vsphere (0.6.0)
  * fog-xenserver (0.2.3)
  * fog-xml (0.1.2)
  * font-awesome-sass (4.3.2.1)
  * foreigner (1.7.4)
  * formatador (0.2.5)
  * friendly_id (5.1.0)
  * gettext (3.2.1)
  * gettext_i18n_rails (1.4.0)
  * gettext_i18n_rails_js (1.0.3)
  * google-api-client (0.8.6)
  * googleauth (0.5.1)
  * gridster-rails (0.5.6)
  * hirb (0.7.3)
  * hirb-unicode (0.0.5)
  * i18n (0.7.0)
  * immigrant (0.3.5)
  * inflecto (0.0.2)
  * ipaddress (0.8.2)
  * jquery-rails (3.1.4)
  * jquery-turbolinks (2.1.0)
  * jquery-ui-rails (4.2.1)
  * jquery_pwstrength_bootstrap_4 (1.2.2)
  * json (1.8.3)
  * jwt (1.5.2)
  * launchy (2.4.3)
  * ldap_fluff (0.4.0)
  * libv8 (3.11.8.17)
  * little-plugger (1.1.4)
  * locale (2.1.2)
  * logging (2.0.0)
  * mail (2.5.4)
  * maruku (0.7.2)
  * memoist (0.14.0)
  * method_source (0.8.2)
  * mime-types (1.25.1)
  * mini_portile2 (2.0.0)
  * minitest (5.1.0)
  * multi-select-rails (0.9.12)
  * multi_json (1.11.2)
  * multipart-post (2.0.0)
  * net-ldap (0.12.1)
  * net-scp (1.2.1)
  * net-ssh (2.9.4)
  * nokogiri (1.6.7.2)
  * oauth (0.4.7)
  * os (0.9.6)
  * paint (0.9.0)
  * parallel (1.6.1)
  * parallel_tests (2.3.1)
  * parser (2.3.0.2)
  * patternfly-sass (2.9.0)
  * pg (0.15.1)
  * po_to_json (1.0.1)
  * polyglot (0.3.5)
  * powerpack (0.1.1)
  * protected_attributes (1.1.3)
  * pry (0.10.3)
  * quiet_assets (1.1.0)
  * rabl (0.11.8)
  * rack (1.5.5)
  * rack-jsonp (1.3.1)
  * rack-openid (1.4.2)
  * rack-test (0.6.3)
  * rails (4.1.5)
  * rails-i18n (4.0.8)
  * rails-observers (0.1.2)
  * railties (4.1.5)
  * rainbow (2.1.0)
  * rake (10.5.0)
  * rbovirt (0.0.35)
  * rbvmomi (1.8.2)
  * ref (2.0.0)
  * rest-client (1.6.9)
  * retriable (1.4.1)
  * rubocop (0.35.1)
  * ruby-libvirt (0.6.0)
  * ruby-openid (2.7.0)
  * ruby-progressbar (1.7.5)
  * ruby2ruby (2.2.0)
  * ruby_parser (3.7.3)
  * safemode (1.2.2)
  * scoped_search (3.2.2)
  * secure_headers (1.4.1)
  * select2-rails (3.5.9.3)
  * sexp_processor (4.6.1)
  * signet (0.7.2)
  * slop (3.6.0)
  * spice-html5-rails (0.1.5)
  * sprockets (3.5.2)
  * sprockets-rails (2.3.3)
  * sqlite3 (1.3.11)
  * sshkey (1.8.0)
  * text (1.3.1)
  * therubyracer (0.11.3)
  * thor (0.19.1)
  * thread_safe (0.3.5)
  * tilt (2.0.2)
  * tins (1.6.0)
  * treetop (1.4.15)
  * trollop (2.1.2)
  * turbolinks (2.5.3)
  * tzinfo (1.2.2)
  * uglifier (2.7.2)
  * underscore-rails (1.8.3)
  * unicode-display_width (0.1.1)
  * uniform_notifier (1.9.0)
  * validates_lengths_from_database (0.5.0)
  * will_paginate (3.1.0)
  * wirb (1.0.3)
  * xml-simple (1.1.5)