Initialising error on Ubuntu 11.10

Rails
1

After upgrading to Ubuntu 11.10 from 11.04 my Rails application does
not
start properly

$ script/server
/var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support/
dependencies.rb:55:
uninitialized constant ActiveSupport::Dependencies::Mutex (NameError)
from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in
gem_original_require' from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:inrequire’
from /var/lib/gems/1.8/gems/activesupport-2.3.5/lib/active_support.rb:
56
from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in
gem_original_require' from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:inrequire’
from /var/lib/gems/1.8/gems/rails-2.3.5/lib/commands/server.rb:1
from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:in
gem_original_require' from /usr/lib/ruby/vendor_ruby/1.8/rubygems/custom_require.rb:36:inrequire’
from script/server:3

I am running

ruby 1.8.7 (2011-06-30 patchlevel 352) [i686-linux]

activesupport-2.3.5

Does somebody have an idea how to fix this problem?

2

On 5 November 2011 19:42, Tommy P. [email protected] wrote:

After upgrading to Ubuntu 11.10 from 11.04 my Rails application does
not
start properly

Are you using rvm to control versions of everything? If not then I
suspect the upgrade to 11.10 has updated some stuff from the
repositories and you now have inconsistent versions. Googling for
your error message suggests that. You might be best to start using
rvm and then you will know you have a consistent set. Since I moved
over to it life has been much easier.

Colin

56

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3

Ok, seems to be a good habit and something to do for next environment
update. For the time being I would like to know what is happening.

First the script to initialise:

~$ cd railstest/rrbok
~/…/rrbok$ more script/server
#!/usr/bin/env ruby
require File.expand_path(‘…/…/config/boot’, FILE)
require ‘commands/server’
~/…/rrbok$

so the offending line is “require ‘commands/server’”

and then I have checked the environment:

~$ gem environment
RubyGems Environment:

  • RUBYGEMS VERSION: 1.7.2
  • RUBY VERSION: 1.8.7 (2011-06-30 patchlevel 352) [i686-linux]
  • INSTALLATION DIRECTORY: /var/lib/gems/1.8
  • RUBY EXECUTABLE: /usr/bin/ruby1.8
  • EXECUTABLE DIRECTORY: /usr/local/bin
  • RUBYGEMS PLATFORMS:
    • ruby
    • x86-linux
  • GEM PATHS:
    • /var/lib/gems/1.8
    • /home/tpollak/.gem/ruby/1.8
  • GEM CONFIGURATION:
    • :update_sources => true
    • :verbose => true
    • :benchmark => false
    • :backtrace => false
    • :bulk_threshold => 1000
  • REMOTE SOURCES:

I can not see any problem with the environment as listed. So what is
“require ‘commands/server’”?

4

On 6 November 2011 12:35, Tommy P. [email protected] wrote:

Ok, seems to be a good habit and something to do for next environment
update. For the time being I would like to know what is happening.

Did you try googling the error message as I suggested. The first hit is

which looks like it might be your problem, see the second Answer.

Colin

5

On 6 November 2011 21:20, Tommy P. [email protected] wrote:

Thanks!

Adding the line “require ‘thread’” before “require ‘commands/server’”
fixed the problem.

Though I still do not understand why this is necessary with 11.10 but
not 11.04.

How did you install rubygems? What do you see if you do
apt-cache policy rubygems

Colin

6

Degrading gem version (ex : 1.3.7 )hope it helps to resolve below error

Mehdi

7

Thanks!

Adding the line “require ‘thread’” before “require ‘commands/server’”
fixed the problem.

Though I still do not understand why this is necessary with 11.10 but
not 11.04.