Best way to diagnose and repair ruby gem errors on mac

Question

(Edited to include full error msg)

All of a sudden any gem command throws the following error:

/usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/gems/2.0.0/extensions/x86_64-darwin-12/2.0.0/psych-2.0.6/psych.bundle: [BUG] Segmentation fault ruby 2.0.0p353 (2013-11-22 revision 43784) [x86_64-darwin12.5.0]

-- Crash Report log information --------------------------------------------

See Crash Report log file under the one of following: * ~/Library/Logs/CrashReporter * /Library/Logs/CrashReporter * ~/Library/Logs/DiagnosticReports * /Library/Logs/DiagnosticReports the more detail of.

-- Control frame information -----------------------------------------------

c:0014 p:-17529742134590 s:0075 e:000074 TOP [FINISH]

c:0013 p:---- s:0073 e:000072 CFUNC :require c:0012 p:0115 s:0069 e:000068 METHOD /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55 c:0011 p:0007 s:0059 e:000058 TOP /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/gems/2.0.0/gems/psych-2.0.6/lib/psych.rb:1 [FINISH] c:0010 p:---- s:0057 e:000056 CFUNC :require c:0009 p:0115 s:0053 e:000052 METHOD /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55 c:0008 p:0078 s:0043 e:000042 METHOD /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems.rb:601 c:0007 p:0013 s:0039 e:000038 METHOD /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/config_file.rb:328 c:0006 p:0145 s:0033 e:000032 METHOD /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/config_file.rb:197 [FINISH] c:0005 p:---- s:0022 e:000021 CFUNC :new c:0004 p:0018 s:0018 e:000016 METHOD /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/gem_runner.rb:74 c:0003 p:0018 s:0013 e:000012 METHOD /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/gem_runner.rb:39 c:0002 p:0115 s:0007 E:0015e0 EVAL /usr/local/Cellar/ruby/2.0.0-p353/bin/gem:21 [FINISH] c:0001 p:0000 s:0002 E:000278 TOP [FINISH]

/usr/local/Cellar/ruby/2.0.0-p353/bin/gem:21:in <main>' /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/gem_runner.rb:39:inrun' /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/gem_runner.rb:74:in do_configuration' /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/gem_runner.rb:74:innew' /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/config_file.rb:197:in initialize' /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/config_file.rb:328:inload_file' /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems.rb:601:in load_yaml' /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:inrequire' /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require' /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/gems/2.0.0/gems/psych-2.0.6/lib/psych.rb:1:in' /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require' /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:inrequire'

-- C level backtrace information -------------------------------------------

-- Other runtime information -----------------------------------------------

• Loaded script: /usr/local/Cellar/ruby/2.0.0-p353/bin/gem

• Loaded features:

  0 enumerator.so 1 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/2.0.0/x86_64-darwin12.5.0/enc/encdb.bundle 2 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/2.0.0/x86_64-darwin12.5.0/enc/trans/transdb.bundle 3 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/2.0.0/x86_64-darwin12.5.0/rbconfig.rb 4 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/compatibility.rb 5 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/defaults.rb 6 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/deprecate.rb 7 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/errors.rb 8 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/version.rb 9 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/requirement.rb 10 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/platform.rb 11 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/basic_specification.rb 12 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/stub_specification.rb 13 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/util/stringio.rb 14 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/specification.rb 15 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/exceptions.rb 16 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_gem.rb 17 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/2.0.0/thread.rb 18 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/2.0.0/monitor.rb 19 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb 20 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems.rb 21 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/2.0.0/optparse.rb 22 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/2.0.0/x86_64-darwin12.5.0/io/console.bundle 23 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/user_interaction.rb 24 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/command.rb 25 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/command_manager.rb 26 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/2.0.0/x86_64-darwin12.5.0/etc.bundle 27 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/config_file.rb 28 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/path_support.rb 29 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/dependency.rb 30 /usr/local/Cellar/ruby/2.0.0-p353/lib/ruby/site_ruby/2.0.0/rubygems/gem_runner.rb

[NOTE] You may have encountered a bug in the Ruby interpreter or extension libraries. Bug reports are welcome. For details: http://www.ruby-lang.org/bugreport.html

Abort trap: 6

Any insight is greatly appreciated.

Answer 1

In comments, the OP said:

Actually, checking the app/updates it appears my Xcode was updated. However I have not upgraded to Yosemite.

Upgrades to Apple's Xcode can break things in surprising ways. Whenever Xcode is updated, or OS X system libraries are upgraded, it can often help to do some or all of the following:

1. Accept the new Xcode license agreement. You need to do this after each upgrade, even if you've accepted the agreement before.
2. Installing the Xcode command line tools again.
3. Re-install any non-system Ruby versions, and recompile gems with native extensions.