Segmentation fault

[mbaglay]

Almost every time when I run rake test:profile I get segmentation fault with really huge backtrace

Cannot insert whole backtrace here.

/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/ruby-prof-0.15.8/lib/ruby-prof/aggregate_call_info.rb:59: [BUG] Segmentation fault at 0x0000000000001c
ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-linux]

-- Control frame information -----------------------------------------------
c:0037 p:---- s:0163 e:000162 CFUNC :inject
c:0036 p:0012 s:0159 e:000158 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/ruby-prof-0.15.8/lib/ruby-prof/aggregate_call_info.rb:59
c:0035 p:0011 s:0155 e:000154 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/ruby-prof-0.15.8/lib/ruby-prof/aggregate_call_info.rb:49
c:0034 p:0156 s:0152 e:000150 BLOCK (erb):150 [FINISH]
c:0033 p:---- s:0148 e:000147 CFUNC :each
c:0032 p:0420 s:0145 e:000144 BLOCK (erb):140 [FINISH]
c:0031 p:---- s:0138 e:000137 CFUNC :reverse_each
c:0030 p:0127 s:0135 e:000134 BLOCK (erb):98 [FINISH]
c:0029 p:---- s:0132 e:000131 CFUNC :each
c:0028 p:0066 s:0129 E:0022d8 EVAL (erb):76 [FINISH]
c:0027 p:---- s:0122 e:000121 CFUNC :eval
c:0026 p:0045 s:0115 e:000114 METHOD /home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/erb.rb:863
c:0025 p:0049 s:0111 E:000540 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/ruby-prof-0.15.8/lib/ruby-prof/printers/graph_html_printer.rb:39
c:0024 p:0024 s:0105 e:000104 BLOCK /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance/ruby.rb:54 [FINISH]
c:0023 p:---- s:0102 e:000101 CFUNC :open
c:0022 p:0055 s:0097 E:001f70 BLOCK /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance/ruby.rb:53 [FINISH]
c:0021 p:---- s:0093 e:000092 CFUNC :each
c:0020 p:0042 s:0090 E:001428 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance/ruby.rb:50
c:0019 p:0075 s:0086 E:000c18 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance.rb:118
c:0018 p:0035 s:0080 E:000cb0 BLOCK /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance.rb:71 [FINISH]
c:0017 p:---- s:0076 e:000075 CFUNC :each
c:0016 p:0039 s:0073 E:000b38 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance.rb:69
c:0015 p:0009 s:0069 E:001520 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance.rb:52
c:0014 p:0014 s:0066 E:000788 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:779
c:0013 p:0021 s:0060 E:001218 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:306
c:0012 p:0015 s:0053 E:000728 BLOCK /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:294 [FINISH]
c:0011 p:---- s:0050 e:000049 CFUNC :each
c:0010 p:0010 s:0047 E:001260 BLOCK /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:293
c:0009 p:0040 s:0045 E:001a10 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:332
c:0008 p:0024 s:0038 E:0014b8 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:319
c:0007 p:0070 s:0032 E:002510 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:292
c:0006 p:0014 s:0025 E:001028 BLOCK /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:155 [FINISH]
c:0005 p:---- s:0022 e:000021 CFUNC :map
c:0004 p:0042 s:0019 E:000678 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:155
c:0003 p:0164 s:0011 E:0013f8 METHOD /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:129
c:0002 p:0073 s:0005 E:000948 BLOCK /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:56 [FINISH]
c:0001 p:0000 s:0002 E:000c90 TOP [FINISH]

-- Ruby level backtrace information ----------------------------------------
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:56:in block in autorun' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:129:inrun'
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:155:in __run' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:155:inmap'
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:155:in block in __run' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:292:inrun'
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:319:in with_info_handler' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:332:inon_signal'
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:293:in block in run' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:293:ineach'
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:294:in block (2 levels) in run' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:306:inrun_one_method'
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/minitest-5.7.0/lib/minitest.rb:779:in run_one_method' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance.rb:52:inrun'
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance.rb:69:in _performance_run' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance.rb:69:ineach'
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance.rb:71:in block in _performance_run' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance.rb:118:inrun_profile'
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance/ruby.rb:50:in record' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance/ruby.rb:50:ineach'
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance/ruby.rb:53:in block in record' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance/ruby.rb:53:inopen'
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/rails-perftest-0.0.6/lib/rails/perftest/active_support/testing/performance/ruby.rb:54:in block (2 levels) in record' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/ruby-prof-0.15.8/lib/ruby-prof/printers/graph_html_printer.rb:39:inprint'
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/erb.rb:863:in result' /home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/erb.rb:863:ineval'
(erb):76:in print' (erb):76:ineach'
(erb):98:in block in print' (erb):98:inreverse_each'
(erb):140:in block (2 levels) in print' (erb):140:ineach'
(erb):150:in block (3 levels) in print' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/ruby-prof-0.15.8/lib/ruby-prof/aggregate_call_info.rb:49:incalled'
/home/mbaglay/.rvm/gems/ruby-2.2.0/gems/ruby-prof-0.15.8/lib/ruby-prof/aggregate_call_info.rb:59:in aggregate' /home/mbaglay/.rvm/gems/ruby-2.2.0/gems/ruby-prof-0.15.8/lib/ruby-prof/aggregate_call_info.rb:59:ininject'

-- Machine register context ------------------------------------------------
RIP: 0x00007f1ca0641e97 RBP: 0x00000000012899f0 RSP: 0x00007ffd18a1b540
RAX: 0x0000000000000000 RBX: 0x0000000001289a10 RCX: 0x0000000000000000
RDX: 0x0000000000000000 RDI: 0x00000000012899f0 RSI: 0x0000000001289a10
R8: 0x0000000000000197 R9: 0x000000000e2102b0 R10: 0x0000000000000000
R11: 0x00000000ffffffff R12: 0x0000000000000a00 R13: 0x0000000000000000
R14: 0x00007f1ca068c5c0 R15: 0x000000000000001c EFL: 0x0000000000010202

-- C level backtrace information -------------------------------------------
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_vm_bugreport+0x51f) [0x7f1ca07ff0bf] vm_dump.c:693
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_bug_context+0xcb) [0x7f1ca0692ffb] error.c:389
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(sigsegv+0x52) [0x7f1ca0772e02] signal.c:878
/lib/x86_64-linux-gnu/libc.so.6 [0x7f1ca0286d40]
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(heap_get_freeobj_from_next_freepage+0x107) [0x7f1ca0641e97] gc.c:5164
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(newobj_of+0x12d) [0x7f1ca06bc89d] gc.c:1597
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_node_newnode+0x27) [0x7f1ca06bc937] gc.c:1718
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_iterate+0x3a) [0x7f1ca07e8a8a] vm_eval.c:1075
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_block_call+0x2b) [0x7f1ca07e8cbb] vm_eval.c:1169
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(enum_inject+0x6f) [0x7f1ca068920f] enum.c:662
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_cfunc+0x11e) [0x7f1ca07e6dfe] vm_insnhelper.c:1360
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec_core+0x1277) [0x7f1ca07ed367] insns.def:1024
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec+0x84) [0x7f1ca07f1b64] vm.c:1407
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_yield+0x779) [0x7f1ca07f9b89] vm.c:821
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_ary_each+0x52) [0x7f1ca0644af2] array.c:1803
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_cfunc+0x11e) [0x7f1ca07e6dfe] vm_insnhelper.c:1360
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec_core+0x1277) [0x7f1ca07ed367] insns.def:1024
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec+0x84) [0x7f1ca07f1b64] vm.c:1407
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_yield+0x779) [0x7f1ca07f9b89] vm.c:821
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_ary_reverse_each+0x3d) [0x7f1ca064583d] array.c:1862
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_cfunc+0x11e) [0x7f1ca07e6dfe] vm_insnhelper.c:1360
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_method+0x11e) [0x7f1ca07fd5fe] vm_insnhelper.c:1656
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec_core+0x1277) [0x7f1ca07ed367] insns.def:1024
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec+0x84) [0x7f1ca07f1b64] vm.c:1407
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_yield+0x779) [0x7f1ca07f9b89] vm.c:821
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_ary_each+0x52) [0x7f1ca0644af2] array.c:1803
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_cfunc+0x11e) [0x7f1ca07e6dfe] vm_insnhelper.c:1360
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_method+0x11e) [0x7f1ca07fd5fe] vm_insnhelper.c:1656
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec_core+0x1277) [0x7f1ca07ed367] insns.def:1024
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec+0x84) [0x7f1ca07f1b64] vm.c:1407
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(eval_string_with_cref+0x427) [0x7f1ca07f2a17] vm_eval.c:1299
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_f_eval+0x7f) [0x7f1ca07f2fbf] vm_eval.c:1338
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_cfunc+0x11e) [0x7f1ca07e6dfe] vm_insnhelper.c:1360
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec_core+0x1ada) [0x7f1ca07edbca] insns.def:1054
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec+0x84) [0x7f1ca07f1b64] vm.c:1407
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_yield+0x779) [0x7f1ca07f9b89] vm.c:821
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_ensure+0xb8) [0x7f1ca069b608] eval.c:907
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_cfunc+0x11e) [0x7f1ca07e6dfe] vm_insnhelper.c:1360
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec_core+0x1277) [0x7f1ca07ed367] insns.def:1024
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec+0x84) [0x7f1ca07f1b64] vm.c:1407
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_yield+0x779) [0x7f1ca07f9b89] vm.c:821
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_ary_each+0x52) [0x7f1ca0644af2] array.c:1803
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_cfunc+0x11e) [0x7f1ca07e6dfe] vm_insnhelper.c:1360
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec_core+0x1277) [0x7f1ca07ed367] insns.def:1024
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec+0x84) [0x7f1ca07f1b64] vm.c:1407
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_yield+0x779) [0x7f1ca07f9b89] vm.c:821
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_ary_each+0x52) [0x7f1ca0644af2] array.c:1803
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_cfunc+0x11e) [0x7f1ca07e6dfe] vm_insnhelper.c:1360
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec_core+0x1277) [0x7f1ca07ed367] insns.def:1024
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec+0x84) [0x7f1ca07f1b64] vm.c:1407
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_yield+0x779) [0x7f1ca07f9b89] vm.c:821
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_ary_each+0x52) [0x7f1ca0644af2] array.c:1803
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_cfunc+0x11e) [0x7f1ca07e6dfe] vm_insnhelper.c:1360
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec_core+0x1277) [0x7f1ca07ed367] insns.def:1024
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec+0x84) [0x7f1ca07f1b64] vm.c:1407
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_yield+0x779) [0x7f1ca07f9b89] vm.c:821
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_ary_collect+0x4d) [0x7f1ca064bbbd] array.c:2695
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_cfunc+0x11e) [0x7f1ca07e6dfe] vm_insnhelper.c:1360
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_call_method+0x11e) [0x7f1ca07fd5fe] vm_insnhelper.c:1656
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec_core+0x1277) [0x7f1ca07ed367] insns.def:1024
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_exec+0x84) [0x7f1ca07f1b64] vm.c:1407
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(invoke_block_from_c+0x312) [0x7f1ca07f53a2] vm.c:821
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(vm_invoke_proc+0xe0) [0x7f1ca07f58a0] vm.c:886
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_vm_invoke_proc+0x1a) [0x7f1ca07f595a] vm.c:905
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_proc_call+0x42) [0x7f1ca06a28e2] proc.c:756
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(rb_exec_end_proc+0x13b) [0x7f1ca069c7bb] eval_jump.c:107
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(ruby_finalize_0+0x88) [0x7f1ca069c908] eval.c:119
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(ruby_cleanup+0x240) [0x7f1ca069ccf0] eval.c:177
/home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/libruby.so.2.2(ruby_run_node+0x23) [0x7f1ca069d183] eval.c:309
/home/mbaglay/.rvm/rubies/ruby-2.2.0/bin/ruby(main+0x4b) [0x40088b] main.c:36

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

• Loaded script: /home/mbaglay/.rvm/rubies/ruby-2.2.0/lib/ruby/2.2.0/rake/rake_test_loader.rb

Hope that's enough.