segmentation fault

[ermadmix@libdev search-frontend]$ rake db:migrate
Warning: NLS_LANG is not set. fallback to US7ASCII.
==  UndoServices: migrating ===================================================
-- add_column(:services, :uid, :string)
   -> 0.0030s
-- remove_column(:services, :subject_id, :string)
   -> 0.4165s
-- remove_column(:services, :preferred_username, :string)
   -> 0.0367s
==  UndoServices: migrated (0.4571s) ==========================================

/usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:2564: [BUG] Segmentation fault
ruby 1.9.3p448 (2013-06-27 revision 41675) [x86_64-linux]

-- Control frame information -----------------------------------------------
c:0029 p:---- s:0144 b:0144 l:000143 d:000143 CFUNC  :match
c:0028 p:0026 s:0140 b:0140 l:0011a0 d:0011a0 METHOD /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:2564
c:0027 p:0013 s:0134 b:0134 l:000e50 d:000e50 METHOD /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:2552
c:0026 p:0060 s:0126 b:0126 l:002100 d:0020f8 BLOCK  /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:1320
c:0025 p:---- s:0124 b:0124 l:000123 d:000123 FINISH
c:0024 p:---- s:0122 b:0122 l:000121 d:000121 CFUNC  :catch
c:0023 p:0025 s:0118 b:0118 l:002100 d:002100 METHOD /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:1317
c:0022 p:0097 s:0112 b:0112 l:002198 d:002198 METHOD /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:1294
c:0021 p:0018 s:0105 b:0105 l:002370 d:001cb8 BLOCK  /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/instrumentation/net
c:0020 p:0026 s:0103 b:0103 l:000a40 d:000a40 METHOD /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/cross_app_tracing.r
c:0019 p:0024 s:0095 b:0095 l:002370 d:002370 METHOD /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/instrumentation/net
c:0018 p:0061 s:0089 b:0089 l:001cf0 d:001e78 BLOCK  /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/new_relic_service.r
c:0017 p:0111 s:0087 b:0087 l:001570 d:001570 METHOD /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/timeout.rb:69
c:0016 p:0153 s:0075 b:0075 l:001cf0 d:001cf0 METHOD /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/new_relic_service.r
c:0015 p:0144 s:0067 b:0067 l:001810 d:001810 METHOD /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/new_relic_service.r
c:0014 p:0035 s:0055 b:0055 l:001680 d:001680 METHOD /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/new_relic_service.r
c:0013 p:0108 s:0047 b:0047 l:001ff8 d:001ff8 METHOD /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:885
c:0012 p:0039 s:0042 b:0042 l:001a60 d:001fa8 BLOCK  /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:1014
c:0011 p:---- s:0040 b:0040 l:000039 d:000039 FINISH
c:0010 p:---- s:0038 b:0038 l:000037 d:000037 CFUNC  :call
c:0009 p:0134 s:0035 b:0035 l:0018f8 d:0018f8 METHOD /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/new_relic_service.r
c:0008 p:0063 s:0030 b:0030 l:001a60 d:001a60 METHOD /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:1010
c:0007 p:0040 s:0022 b:0022 l:001570 d:001570 METHOD /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:1047
c:0006 p:0009 s:0018 b:0018 l:001680 d:002648 BLOCK  /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:244
c:0005 p:0025 s:0016 b:0016 l:0018f8 d:0018f8 METHOD /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent.rb:354
c:0004 p:0194 s:0013 b:0013 l:001680 d:001680 METHOD /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:243
c:0003 p:0081 s:0007 b:0007 l:0022d8 d:0004d0 BLOCK  /usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:389
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:000108 d:000108 TOP   

-- Ruby level backtrace information ----------------------------------------
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:389:in `block in install_exit_handler'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:243:in `shutdown'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent.rb:354:in `disable_all_tracing'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:244:in `block in shutdown'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:1047:in `graceful_disconnect'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:1010:in `transmit_data'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/new_relic_service.rb:176:in `session'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/new_relic_service.rb:176:in `call'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:1014:in `block in transmit_data'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/agent.rb:885:in `harvest_and_send_timeslice_data'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/new_relic_service.rb:116:in `metric_data'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/new_relic_service.rb:271:in `invoke_remote'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/new_relic_service.rb:314:in `send_request'
/usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/timeout.rb:69:in `timeout'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/new_relic_service.rb:316:in `block in send_request'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/instrumentation/net.rb:24:in `request_with_newrelic_trace'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/cross_app_tracing.rb:35:in `trace_http_request'
/usr/local/rvm/gems/ruby-1.9.3-p448@search-frontend-ermadmix/gems/newrelic_rpm-3.6.0.83/lib/new_relic/agent/instrumentation/net.rb:25:in `block in request_with_newrelic_trace'
/usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:1294:in `request'
/usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:1317:in `transport_request'
/usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:1317:in `catch'
/usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:1320:in `block in transport_request'
/usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:2552:in `read_new'
/usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:2564:in `read_status_line'
/usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/net/http.rb:2564:in `match'

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