Invalid date format specification in gemspec

Question

I am getting the following error when I try to use gems in windows, and I also referred to this stackoverflow post and updated rubygems and rails. But nothing could solve t

Answer 1

I've too many gems to fix one by one, and try both update_rubygems and gem pristine --all still no luck.

So I use rvm clear gemset to remove all gems with wrong gemspec. Execute bundle install to reinstall all the gems, and Viola!

Answer 2

I have fixed this issue 'invalid date formate specification' by, changing the corresponding line in D:/RailsInstaller/Ruby1.8.7/lib/ruby/gems/1.8/specifications/tilt-1.3.3.gemspec by putting s.date =Time.now instead of s.date = "2011-08-25 00:00:00.000000000Z" The same can be use the other files too.

Answer 3

"gem install rubygems-update", "update_rubygems", then "gem pristine --all" is the combination that solved the problem for me after none of the previously listed ones worked.

Answer 4

I have fixed this issue by upgrading my RubyGems to 1.8.10 with

gem update --system

Edit: You can also try (as suggested by ZeissS)

gem install rubygems-update
update_rubygems

Answer 5

In addition to running gem update --system I used gem install <gem with bad gemspec> on each of the item gem env reported as bad. This cleaned up the errors on my machine.

Answer 6

Had the same problem when trying to install a GEM on Ubuntu 11.10.

Invalid gemspec in [/var/lib/gems/1.8/specifications/svn2git-2.1.2.gemspec]: invalid date format in specification: "2011-12-28 00:00:00.000000000Z"

The above options did not work for me. gem env reported the following:

RubyGems Environment:
  - RUBYGEMS VERSION: 1.7.2
  - RUBY VERSION: 1.8.7 (2011-06-30 patchlevel 352) [i686-linux]

So I presumed this problem was due to the fact I required a newer version of RubyGems installed.

Issuing gem update --system yeilded the following warning:

ERROR:  gem update --system is disabled on Debian, because it will overwrite the content of the rubygems Debian package, and might break your Debian system in subtle ways. The Debian-supported way to update rubygems is through apt-get, using Debian official repositories.
If you really know what you are doing, you can still update rubygems by setting the REALLY_GEM_UPDATE_SYSTEM environment variable, but please remember that this is completely unsupported by Debian.

However I was finally able to update rubygems to 1.8.15 by issuing:

sudo gem install rubygems-update && update_rubygems

Everything worked after that, good luck! :)