`method_missing': undefined method `this'

[Abram Bailey]

This just started randomly this morning on foreman start. Everything was fine yesterday.

.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:2157:in `method_missing': undefined method `this' for #<Gem::Specification:0x3fefa8813134 foreman-0.82.0> (NoMethodError)
  from .rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/specification.rb:1056:in `find_active_stub_by_path'
  from .rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:63:in `require'
  from .rvm/gems/ruby-2.2.1/gems/foreman-0.82.0/bin/foreman:5:in `<top (required)>'
  from .rvm/gems/ruby-2.2.1/bin/foreman:23:in `load'
  from .rvm/gems/ruby-2.2.1/bin/foreman:23:in `<main>'
  from .rvm/gems/ruby-2.2.1/bin/ruby_executable_hooks:15:in `eval'
  from .rvm/gems/ruby-2.2.1/bin/ruby_executable_hooks:15:in `<main>'

[Alexis Zucco]

Same here

[Abram Bailey]

I fixed this by updating rails and ruby (not sure which was the culprit) to:

ruby 2.3.3p222 (2016-11-21 revision 56859) [x86_64-darwin16]
Rails 4.2.7

[xuanyu]

+1
ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-darwin16]
Rails 5.0.1

I fixed it with gem update --system
it seems a ruby gem bug