private_pub segmentation fault with ruby 2.1.2

-- 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
   for more details.

-- Control frame information -----------------------------------------------
c:0025 p:-17578920525412 s:0096 e:000095 TOP    [FINISH]
c:0024 p:---- s:0094 e:000093 CFUNC  :require
c:0023 p:0080 s:0090 e:000089 TOP    /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/eventmachine-1.0.3/lib/eventmachine.rb:8 [FINISH]
c:0022 p:---- s:0088 e:000087 CFUNC  :require
c:0021 p:0055 s:0084 e:000083 TOP    /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/thin-1.6.2/lib/thin.rb:7 [FINISH]
c:0020 p:---- s:0082 e:000081 CFUNC  :require
c:0019 p:0017 s:0078 e:000077 BLOCK  /Users/Jeiwan/Coding/Rails/private_pub/private_pub.ru:3 [FINISH]
c:0018 p:---- s:0076 e:000075 CFUNC  :instance_eval
c:0017 p:0035 s:0073 e:000072 METHOD /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:55 [FINISH]
c:0016 p:---- s:0068 e:000067 CFUNC  :new
c:0015 p:0013 s:0065 E:001c38 EVAL   [FINISH]
c:0014 p:---- s:0063 e:000062 CFUNC  :eval
c:0013 p:0031 s:0056 e:000055 METHOD /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:49
c:0012 p:0098 s:0051 e:000050 METHOD /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:40
c:0011 p:0070 s:0043 e:000042 METHOD /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:277
c:0010 p:0035 s:0038 e:000037 METHOD /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:199
c:0009 p:0022 s:0035 e:000033 METHOD /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:314
c:0008 p:0140 s:0031 e:000030 METHOD /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:250
c:0007 p:0014 s:0025 e:000024 METHOD /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:141
c:0006 p:0021 s:0021 e:000020 TOP    /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/bin/rackup:4 [FINISH]
c:0005 p:---- s:0019 e:000018 CFUNC  :load
c:0004 p:0119 s:0015 E:0012d8 EVAL   /Users/Jeiwan/.rvm/gems/ruby-2.1.2/bin/rackup:23 [FINISH]
c:0003 p:---- s:0011 e:000010 CFUNC  :eval
c:0002 p:0118 s:0005 E:0026e0 EVAL   /Users/Jeiwan/.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15 [FINISH]
c:0001 p:0000 s:0002 E:002268 TOP    [FINISH]

/Users/Jeiwan/.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `<main>'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `eval'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/bin/rackup:23:in `<main>'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/bin/rackup:23:in `load'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/bin/rackup:4:in `<top (required)>'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:141:in `start'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:250:in `start'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:314:in `wrapped_app'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:199:in `app'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb:277:in `build_app_and_options_from_config'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:40:in `parse_file'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:49:in `new_from_string'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:49:in `eval'
/Users/Jeiwan/Coding/Rails/private_pub/private_pub.ru:0:in `<main>'
/Users/Jeiwan/Coding/Rails/private_pub/private_pub.ru:0:in `new'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval'
/Users/Jeiwan/Coding/Rails/private_pub/private_pub.ru:3:in `block in <main>'
/Users/Jeiwan/Coding/Rails/private_pub/private_pub.ru:3:in `require'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/thin-1.6.2/lib/thin.rb:7:in `<top (required)>'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/thin-1.6.2/lib/thin.rb:7:in `require'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/eventmachine-1.0.3/lib/eventmachine.rb:8:in `<top (required)>'
/Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/eventmachine-1.0.3/lib/eventmachine.rb:8:in `require'

-- C level backtrace information -------------------------------------------
0   ruby                                0x00000001070d9ec6 rb_vm_bugreport + 134
1   ruby                                0x0000000106f90383 report_bug + 307
2   ruby                                0x0000000106f90244 rb_bug + 180
3   ruby                                0x000000010705d119 sigsegv + 153
4   libsystem_platform.dylib            0x00007fff8f3b65aa _sigtramp + 26
5   libruby.2.0.0.dylib                 0x00000001079af3e0 ruby_xmalloc + 17
6   ???                                 0x00007fff58da8300 0x0 + 140734684103424

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

* Loaded script: /Users/Jeiwan/.rvm/gems/ruby-2.1.2/bin/rackup

* Loaded features:

    0 enumerator.so
    1 enc/encdb.so
    2 enc/trans/transdb.so
    3 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/x86_64-darwin13.0/rbconfig.rb
    4 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/compatibility.rb
    5 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/defaults.rb
    6 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/deprecate.rb
    7 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/errors.rb
    8 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/version.rb
    9 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/requirement.rb
   10 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/platform.rb
   11 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/basic_specification.rb
   12 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/stub_specification.rb
   13 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/util/stringio.rb
   14 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/specification.rb
   15 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/exceptions.rb
   16 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/core_ext/kernel_gem.rb
   17 thread.rb
   18 thread.so
   19 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/monitor.rb
   20 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb
   21 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems.rb
   22 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/path_support.rb
   23 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/dependency.rb
   24 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/executable-hooks-1.3.2/lib/executable-hooks/hooks.rb
   25 etc.so
   26 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/fileutils.rb
   27 pathname.so
   28 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/pathname.rb
   29 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/gem_path_manipulation.rb
   30 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/gem_helpers.rb
   31 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/match_platform.rb
   32 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/rubygems_ext.rb
   33 io/console.so
   34 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/user_interaction.rb
   35 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/config_file.rb
   36 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/rubygems_integration.rb
   37 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/version.rb
   38 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/constants.rb
   39 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/current_ruby.rb
   40 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler.rb
   41 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-unload-1.0.2/lib/bundler-unload.rb
   42 digest.so
   43 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/digest.rb
   44 digest/sha1.so
   45 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/environment.rb
   46 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/shared_helpers.rb
   47 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/runtime.rb
   48 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/settings.rb
   49 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/set.rb
   50 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/definition.rb
   51 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/dependency.rb
   52 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/ruby_dsl.rb
   53 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/dsl.rb
   54 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/source.rb
   55 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/uri/common.rb
   56 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/uri/generic.rb
   57 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/uri/ftp.rb
   58 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/uri/http.rb
   59 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/uri/https.rb
   60 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/uri/ldap.rb
   61 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/uri/ldaps.rb
   62 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/uri/mailto.rb
   63 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/uri.rb
   64 socket.so
   65 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/socket.rb
   66 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/timeout.rb
   67 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/net/protocol.rb
   68 zlib.so
   69 stringio.so
   70 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/net/http/exceptions.rb
   71 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/net/http/header.rb
   72 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/net/http/generic_request.rb
   73 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/net/http/request.rb
   74 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/net/http/requests.rb
   75 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/net/http/response.rb
   76 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/net/http/responses.rb
   77 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/net/http/proxy_delta.rb
   78 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/net/http/backward.rb
   79 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/net/http.rb
   80 date_core.so
   81 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/date/format.rb
   82 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/date.rb
   83 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/time.rb
   84 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/request.rb
   85 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/cgi/core.rb
   86 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/cgi/util.rb
   87 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/cgi/cookie.rb
   88 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/cgi.rb
   89 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/uri_formatter.rb
   90 fcntl.so
   91 openssl.so
   92 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/openssl/bn.rb
   93 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/openssl/cipher.rb
   94 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/openssl/config.rb
   95 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/openssl/digest.rb
   96 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/openssl/x509.rb
   97 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/openssl/buffering.rb
   98 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/openssl/ssl.rb
   99 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/openssl.rb
  100 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/securerandom.rb
  101 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/resolv.rb
  102 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/remote_fetcher.rb
  103 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/text.rb
  104 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/name_tuple.rb
  105 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/rubygems/spec_fetcher.rb
  106 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/source/rubygems.rb
  107 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/source/path.rb
  108 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/source/git.rb
  109 strscan.so
  110 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/lockfile_parser.rb
  111 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/lazy_specification.rb
  112 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tsort.rb
  113 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/forwardable.rb
  114 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/spec_set.rb
  115 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/index.rb
  116 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/remote_specification.rb
  117 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/endpoint_specification.rb
  118 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/source/git/git_proxy.rb
  119 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/dep_proxy.rb
  120 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/rubygems-bundler-1.4.4/lib/rubygems-bundler/noexec.rb
  121 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/delegate.rb
  122 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tmpdir.rb
  123 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/tempfile.rb
  124 /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/multipart.rb
  125 /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/utils.rb
  126 /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack.rb
  127 /Users/Jeiwan/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/optparse.rb
  128 /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/server.rb
  129 /Users/Jeiwan/.rvm/gems/ruby-2.1.2/gems/rack-1.5.2/lib/rack/builder.rb
  130 /Users/Jeiwan/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/setup.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