cannot load such file -- systemu error

Question

I have updated sidekiq gem to the latest version. Now I am getting the following error when I try to run the server:

cannot load such file -- systemu
/home/kiprosh22/.rvm/gems/ruby-1.9.3-p194@liquor/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
/home/kiprosh22/.rvm/gems/ruby-1.9.3-p194@liquor/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `block in require'
/home/kiprosh22/.rvm/gems/ruby-1.9.3-p194@liquor/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency'
/home/kiprosh22/.rvm/gems/ruby-1.9.3-p194@liquor/gems/activesupport-3.2.13/lib/active_support/dependencies.rb:251:in `require'
/home/kiprosh22/.rvm/gems/ruby-1.9.3-p194@liquor/gems/macaddr-1.6.2/lib/macaddr.rb:23:in `<top (required)>'
......

I am unable to find the cause for the same.

Answer 1

I ran into this issue this morning after running bundle update.

Adding

gem macaddr, '1.6.1'

to the Gemfile and running bundle update macaddr cleared it for now.

Answer 2

Looks like the latest version of the systemu gem has an dependency issue (see last comment), which is caused by the latest commit (see the comments that others have added).