ruby - Rails crashing on puma webserver (heroku) -

i have rails application running on puma webserver (multiple threads) on heroku regularly crashing following output. ideas what's going on?

versions: ruby 2.3.1p112 puma (3.6.0) rails 4.2.7.1 scout_apm (3.0.0.pre3)

2016-11-10t17:09:36.355842+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:184: [bug] rb_gc_mark(): 0x007f4c8efe5588 t_none 2016-11-10t17:09:36.355851+00:00 app[web.1]: ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-linux] 2016-11-10t17:09:36.355852+00:00 app[web.1]: 2016-11-10t17:09:36.355890+00:00 app[web.1]: -- control frame information ----------------------------------------------- 2016-11-10t17:09:36.355979+00:00 app[web.1]: c:0041 p:---- s:0223 e:000222 cfunc  :method_missing 2016-11-10t17:09:36.356041+00:00 app[web.1]: c:0040 p:0053 s:0218 e:000217 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:184 2016-11-10t17:09:36.356098+00:00 app[web.1]: c:0039 p:0032 s:0213 e:000207 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:261 2016-11-10t17:09:36.356188+00:00 app[web.1]: c:0038 p:0009 s:0205 e:000204 block  /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:152 [finish] 2016-11-10t17:09:36.356247+00:00 app[web.1]: c:0037 p:---- s:0202 e:000201 cfunc  :map 2016-11-10t17:09:36.356326+00:00 app[web.1]: c:0036 p:0011 s:0199 e:000198 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:152 2016-11-10t17:09:36.356385+00:00 app[web.1]: c:0035 p:0020 s:0196 e:000194 block  /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:56 2016-11-10t17:09:36.356449+00:00 app[web.1]: c:0034 p:0035 s:0190 e:000189 block  /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:307 [finish] 2016-11-10t17:09:36.356532+00:00 app[web.1]: c:0033 p:---- s:0185 e:000184 cfunc  :each 2016-11-10t17:09:36.356594+00:00 app[web.1]: c:0032 p:0014 s:0182 e:000181 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:305 2016-11-10t17:09:36.356675+00:00 app[web.1]: c:0031 p:0024 s:0179 e:000178 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:55 2016-11-10t17:09:36.356737+00:00 app[web.1]: c:0030 p:0227 s:0175 e:000173 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/converter_base.rb:196 2016-11-10t17:09:36.356815+00:00 app[web.1]: c:0029 p:0038 s:0164 e:000163 block  /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/slow_request_converter.rb:72 2016-11-10t17:09:36.356883+00:00 app[web.1]: c:0028 p:0024 s:0161 e:000160 block  /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/depth_first_walker.rb:28 [finish] 2016-11-10t17:09:36.356944+00:00 app[web.1]: c:0027 p:---- s:0158 e:000157 cfunc  :each 2016-11-10t17:09:36.357025+00:00 app[web.1]: c:0026 p:0071 s:0155 e:000154 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/depth_first_walker.rb:26 2016-11-10t17:09:36.357093+00:00 app[web.1]: c:0025 p:0036 s:0150 e:000149 block  /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/depth_first_walker.rb:29 [finish] 2016-11-10t17:09:36.357175+00:00 app[web.1]: c:0024 p:---- s:0147 e:000146 cfunc  :each 2016-11-10t17:09:36.357234+00:00 app[web.1]: c:0023 p:0071 s:0144 e:000143 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/depth_first_walker.rb:26 2016-11-10t17:09:36.357314+00:00 app[web.1]: c:0022 p:0040 s:0139 e:001c10 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/slow_request_converter.rb:67 2016-11-10t17:09:36.357372+00:00 app[web.1]: c:0021 p:0112 s:0134 e:000133 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/slow_request_converter.rb:38 2016-11-10t17:09:36.357429+00:00 app[web.1]: c:0020 p:0039 s:0127 e:000122 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/scored_item_set.rb:81 2016-11-10t17:09:36.357510+00:00 app[web.1]: c:0019 p:0073 s:0119 e:000118 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/scored_item_set.rb:39 2016-11-10t17:09:36.357577+00:00 app[web.1]: c:0018 p:0013 s:0113 e:000112 block  /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/store.rb:227 [finish] 2016-11-10t17:09:36.357659+00:00 app[web.1]: c:0017 p:---- s:0110 e:000109 cfunc  :each 2016-11-10t17:09:36.357718+00:00 app[web.1]: c:0016 p:0014 s:0107 e:000106 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/store.rb:226 2016-11-10t17:09:36.357792+00:00 app[web.1]: c:0015 p:0013 s:0103 e:000102 block  /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/store.rb:60 [finish] 2016-11-10t17:09:36.357861+00:00 app[web.1]: c:0014 p:---- s:0101 e:000100 cfunc  :synchronize 2016-11-10t17:09:36.357921+00:00 app[web.1]: c:0013 p:0023 s:0098 e:000097 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/store.rb:59 2016-11-10t17:09:36.358003+00:00 app[web.1]: c:0012 p:0262 s:0094 e:000093 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/tracked_request.rb:273 2016-11-10t17:09:36.358061+00:00 app[web.1]: c:0011 p:0070 s:0083 e:000082 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/tracked_request.rb:183 2016-11-10t17:09:36.358135+00:00 app[web.1]: c:0010 p:0147 s:0080 e:000079 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/tracked_request.rb:98 2016-11-10t17:09:36.358204+00:00 app[web.1]: c:0009 p:0065 s:0076 e:000074 method /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/instruments/middleware_summary.rb:54 2016-11-10t17:09:36.358263+00:00 app[web.1]: c:0008 p:0066 s:0069 e:000068 method /app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/engine.rb:518 2016-11-10t17:09:36.358348+00:00 app[web.1]: c:0007 p:0042 s:0065 e:000064 method /app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/application.rb:165 2016-11-10t17:09:36.358406+00:00 app[web.1]: c:0006 p:0032 s:0061 e:000060 method /app/vendor/bundle/ruby/2.3.0/gems/puma-3.6.0/lib/puma/configuration.rb:225 2016-11-10t17:09:36.358484+00:00 app[web.1]: c:0005 p:0258 s:0057 e:000056 method /app/vendor/bundle/ruby/2.3.0/gems/puma-3.6.0/lib/puma/server.rb:578 2016-11-10t17:09:36.358544+00:00 app[web.1]: c:0004 p:0087 s:0033 e:000032 method /app/vendor/bundle/ruby/2.3.0/gems/puma-3.6.0/lib/puma/server.rb:415 2016-11-10t17:09:36.358612+00:00 app[web.1]: c:0003 p:0084 s:0022 e:000021 block  /app/vendor/bundle/ruby/2.3.0/gems/puma-3.6.0/lib/puma/server.rb:275 [finish] 2016-11-10t17:09:36.358702+00:00 app[web.1]: c:0002 p:0161 s:0013 e:000012 block  /app/vendor/bundle/ruby/2.3.0/gems/puma-3.6.0/lib/puma/thread_pool.rb:116 [finish] 2016-11-10t17:09:36.358758+00:00 app[web.1]: c:0001 p:---- s:0002 e:000001 (none) [finish] 2016-11-10t17:09:36.358768+00:00 app[web.1]: 2016-11-10t17:09:36.358778+00:00 app[web.1]: -- ruby level backtrace information ---------------------------------------- 2016-11-10t17:09:36.358788+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/puma-3.6.0/lib/puma/thread_pool.rb:116:in `block in spawn_thread' 2016-11-10t17:09:36.358821+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/puma-3.6.0/lib/puma/server.rb:275:in `block in run' 2016-11-10t17:09:36.358832+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/puma-3.6.0/lib/puma/server.rb:415:in `process_client' 2016-11-10t17:09:36.358843+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/puma-3.6.0/lib/puma/server.rb:578:in `handle_request' 2016-11-10t17:09:36.358853+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/puma-3.6.0/lib/puma/configuration.rb:225:in `call' 2016-11-10t17:09:36.358864+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/application.rb:165:in `call' 2016-11-10t17:09:36.358876+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/engine.rb:518:in `call' 2016-11-10t17:09:36.358887+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/instruments/middleware_summary.rb:54:in `call' 2016-11-10t17:09:36.358898+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/tracked_request.rb:98:in `stop_layer' 2016-11-10t17:09:36.358909+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/tracked_request.rb:183:in `stop_request' 2016-11-10t17:09:36.358919+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/tracked_request.rb:273:in `record!' 2016-11-10t17:09:36.358929+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/store.rb:59:in `track_slow_transaction!' 2016-11-10t17:09:36.358940+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/store.rb:59:in `synchronize' 2016-11-10t17:09:36.358951+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/store.rb:60:in `block in track_slow_transaction!' 2016-11-10t17:09:36.358974+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/store.rb:226:in `merge_slow_transactions!' 2016-11-10t17:09:36.358995+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/store.rb:226:in `each' 2016-11-10t17:09:36.359006+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/store.rb:227:in `block in merge_slow_transactions!' 2016-11-10t17:09:36.359018+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/scored_item_set.rb:39:in `<<' 2016-11-10t17:09:36.359029+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/scored_item_set.rb:81:in `store!' 2016-11-10t17:09:36.359039+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/slow_request_converter.rb:38:in `call' 2016-11-10t17:09:36.359050+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/slow_request_converter.rb:67:in `create_metrics' 2016-11-10t17:09:36.359060+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/depth_first_walker.rb:26:in `walk' 2016-11-10t17:09:36.359071+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/depth_first_walker.rb:26:in `each' 2016-11-10t17:09:36.359082+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/depth_first_walker.rb:29:in `block in walk' 2016-11-10t17:09:36.359092+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/depth_first_walker.rb:26:in `walk' 2016-11-10t17:09:36.359103+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/depth_first_walker.rb:26:in `each' 2016-11-10t17:09:36.423967+00:00 app[web.1]:   346 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/time/marshal.rb 2016-11-10t17:09:36.423991+00:00 app[web.1]:   347 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/time.rb 2016-11-10t17:09:36.424002+00:00 app[web.1]:   348 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/date/acts_like.rb 2016-11-10t17:09:36.424014+00:00 app[web.1]:   349 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/module/remove_method.rb 2016-11-10t17:09:36.359113+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/depth_first_walker.rb:28:in `block in walk' 2016-11-10t17:09:36.359124+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/slow_request_converter.rb:72:in `block in create_metrics' 2016-11-10t17:09:36.424024+00:00 app[web.1]:   350 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/date/conversions.rb 2016-11-10t17:09:36.359157+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/layer_converters/converter_base.rb:196:in `store_specific_metric' 2016-11-10t17:09:36.424035+00:00 app[web.1]:   351 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/date.rb 2016-11-10t17:09:36.359169+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:55:in `as_json' 2016-11-10t17:09:36.359179+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:305:in `each' 2016-11-10t17:09:36.359190+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:305:in `each' 2016-11-10t17:09:36.359201+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:307:in `block in each' 2016-11-10t17:09:36.424044+00:00 app[web.1]:   352 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/date_time/acts_like.rb 2016-11-10t17:09:36.424054+00:00 app[web.1]:   353 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/date_time/conversions.rb 2016-11-10t17:09:36.424064+00:00 app[web.1]:   354 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/date_time/zones.rb 2016-11-10t17:09:36.359213+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:56:in `block in as_json' 2016-11-10t17:09:36.359223+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:152:in `as_json' 2016-11-10t17:09:36.359234+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:152:in `map' 2016-11-10t17:09:36.359244+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:152:in `block in as_json' 2016-11-10t17:09:36.359255+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:261:in `as_json' 2016-11-10t17:09:36.359266+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:184:in `gem_name' 2016-11-10t17:09:36.359276+00:00 app[web.1]: /app/vendor/bundle/ruby/2.3.0/gems/scout_apm-3.0.0.pre3/lib/scout_apm/trace_compactor.rb:184:in `method_missing' 2016-11-10t17:09:36.359289+00:00 app[web.1]: 2016-11-10t17:09:36.359311+00:00 app[web.1]: -- c level backtrace information ------------------------------------------- 2016-11-10t17:09:36.388275+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_vm_bugreport+0x51f) [0x7f4cba2c231f] vm_dump.c:688 2016-11-10t17:09:36.388789+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_bug+0xcf) [0x7f4cba29c8df] error.c:420 2016-11-10t17:09:36.389405+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(gc_mark_children+0x6f1) [0x7f4cba0ef331] gc.c:4506 2016-11-10t17:09:36.424074+00:00 app[web.1]:   355 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/date_time.rb 2016-11-10t17:09:36.424085+00:00 app[web.1]:   356 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/numeric/time.rb 2016-11-10t17:09:36.424095+00:00 app[web.1]:   357 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/integer/time.rb 2016-11-10t17:09:36.427461+00:00 app[web.1]:   358 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/string/conversions.rb 2016-11-10t17:09:36.434301+00:00 app[web.1]:   359 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/string/zones.rb 2016-11-10t17:09:36.434303+00:00 app[web.1]:   360 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/time.rb 2016-11-10t17:09:36.389979+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(gc_marks_rest+0x10e) [0x7f4cba0f033e] gc.c:4534 2016-11-10t17:09:36.434304+00:00 app[web.1]:   361 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/array/wrap.rb 2016-11-10t17:09:36.434305+00:00 app[web.1]:   362 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/hash/reverse_merge.rb 2016-11-10t17:09:36.390584+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(gc_start.part.63+0x4de) [0x7f4cba0f099e] gc.c:5457 2016-11-10t17:09:36.391260+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(garbage_collect_with_gvl+0xd3) [0x7f4cba0f1143] gc.c:6160 2016-11-10t17:09:36.434306+00:00 app[web.1]:   363 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/hash/conversions.rb 2016-11-10t17:09:36.391973+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(objspace_malloc_increase.isra.66+0x7d) [0x7f4cba0f201d] gc.c:7558 2016-11-10t17:09:36.392568+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(objspace_xmalloc+0x4e) [0x7f4cba0f20fe] gc.c:7650 2016-11-10t17:09:36.434306+00:00 app[web.1]:   364 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/conversions.rb 2016-11-10t17:09:36.434307+00:00 app[web.1]:   365 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/instance_variables.rb 2016-11-10t17:09:36.393139+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(str_new0+0xec) [0x7f4cba1a3fcc] string.c:654 2016-11-10t17:09:36.393851+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(make_no_method_exception+0x31) [0x7f4cba2153d1] vm_eval.c:693 2016-11-10t17:09:36.394546+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(raise_method_missing.isra.90+0x54) [0x7f4cba21be14] vm_eval.c:734 2016-11-10t17:09:36.434307+00:00 app[web.1]:   366 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/json/version.rb 2016-11-10t17:09:36.395181+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_method_missing+0x16) [0x7f4cba21bf46] vm_eval.c:680 2016-11-10t17:09:36.395848+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_call_cfunc+0xf6) [0x7f4cba219b76] vm_insnhelper.c:1638 2016-11-10t17:09:36.396489+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_call_method+0xe3) [0x7f4cba227943] vm_insnhelper.c:2172 2016-11-10t17:09:36.434308+00:00 app[web.1]:   367 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/ostruct.rb 2016-11-10t17:09:36.434309+00:00 app[web.1]:   368 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/json/generic_object.rb 2016-11-10t17:09:36.397138+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_call_method_missing+0x1ab) [0x7f4cba227b4b] vm_insnhelper.c:1901 2016-11-10t17:09:36.397682+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec_core+0x1407) [0x7f4cba2217b7] insns.def:1860 2016-11-10t17:09:36.398156+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec+0x81) [0x7f4cba225fd1] vm.c:1650 2016-11-10t17:09:36.398633+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_yield+0x21f) [0x7f4cba22859f] vm.c:971 2016-11-10t17:09:36.399173+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_ary_collect+0x5d) [0x7f4cba25357d] array.c:2733 2016-11-10t17:09:36.434310+00:00 app[web.1]:   369 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/json/common.rb 2016-11-10t17:09:36.399767+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_call_cfunc+0xf6) [0x7f4cba219b76] vm_insnhelper.c:1638 2016-11-10t17:09:36.400292+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec_core+0x1f1e) [0x7f4cba2222ce] insns.def:964 2016-11-10t17:09:36.400738+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec+0x81) [0x7f4cba225fd1] vm.c:1650 2016-11-10t17:09:36.434310+00:00 app[web.1]:   370 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/x86_64-linux/enc/utf_16be.so 2016-11-10t17:09:36.401929+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_yield+0x21f) [0x7f4cba22859f] vm.c:971 2016-11-10t17:09:36.434311+00:00 app[web.1]:   371 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/x86_64-linux/enc/utf_16le.so 2016-11-10t17:09:36.402499+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_ary_each+0x3d) [0x7f4cba24d2dd] array.c:1815 2016-11-10t17:09:36.403076+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_call_cfunc+0xf6) [0x7f4cba219b76] vm_insnhelper.c:1638 2016-11-10t17:09:36.403597+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec_core+0x1f1e) [0x7f4cba2222ce] insns.def:964 2016-11-10t17:09:36.404060+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec+0x81) [0x7f4cba225fd1] vm.c:1650 2016-11-10t17:09:36.404532+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_yield+0x21f) [0x7f4cba22859f] vm.c:971 2016-11-10t17:09:36.405156+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_ary_each+0x3d) [0x7f4cba24d2dd] array.c:1815 2016-11-10t17:09:36.405732+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_call_cfunc+0xf6) [0x7f4cba219b76] vm_insnhelper.c:1638 2016-11-10t17:09:36.434311+00:00 app[web.1]:   372 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/x86_64-linux/enc/utf_32be.so 2016-11-10t17:09:36.406257+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec_core+0x1f1e) [0x7f4cba2222ce] insns.def:964 2016-11-10t17:09:36.406722+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec+0x81) [0x7f4cba225fd1] vm.c:1650 2016-11-10t17:09:36.407221+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_yield+0x21f) [0x7f4cba22859f] vm.c:971 2016-11-10t17:09:36.407731+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_ary_each+0x3d) [0x7f4cba24d2dd] array.c:1815 2016-11-10t17:09:36.408306+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_call_cfunc+0xf6) [0x7f4cba219b76] vm_insnhelper.c:1638 2016-11-10t17:09:36.434312+00:00 app[web.1]:   373 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/x86_64-linux/enc/utf_32le.so 2016-11-10t17:09:36.408844+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec_core+0x1f1e) [0x7f4cba2222ce] insns.def:964 2016-11-10t17:09:36.409297+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec+0x81) [0x7f4cba225fd1] vm.c:1650 2016-11-10t17:09:36.434312+00:00 app[web.1]:   374 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/x86_64-linux/json/ext/parser.so 2016-11-10t17:09:36.434313+00:00 app[web.1]:   375 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/x86_64-linux/json/ext/generator.so 2016-11-10t17:09:36.409769+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_yield+0x21f) [0x7f4cba22859f] vm.c:971 2016-11-10t17:09:36.410300+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_ary_each+0x3d) [0x7f4cba24d2dd] array.c:1815 2016-11-10t17:09:36.410880+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_call_cfunc+0xf6) [0x7f4cba219b76] vm_insnhelper.c:1638 2016-11-10t17:09:36.411412+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec_core+0x1f1e) [0x7f4cba2222ce] insns.def:964 2016-11-10t17:09:36.434313+00:00 app[web.1]:   376 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/json/ext.rb 2016-11-10t17:09:36.411869+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec+0x81) [0x7f4cba225fd1] vm.c:1650 2016-11-10t17:09:36.412337+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_yield+0x21f) [0x7f4cba22859f] vm.c:971 2016-11-10t17:09:36.412829+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(rb_ensure+0xb8) [0x7f4cba0d26d8] eval.c:901 2016-11-10t17:09:36.413404+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_call_cfunc+0xf6) [0x7f4cba219b76] vm_insnhelper.c:1638 2016-11-10t17:09:36.434314+00:00 app[web.1]:   377 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/json.rb 2016-11-10t17:09:36.413939+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec_core+0x1f1e) [0x7f4cba2222ce] insns.def:964 2016-11-10t17:09:36.414416+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec+0x81) [0x7f4cba225fd1] vm.c:1650 2016-11-10t17:09:36.434314+00:00 app[web.1]:   378 /app/vendor/ruby-2.3.1/lib/ruby/2.3.0/bigdecimal/util.rb 2016-11-10t17:09:36.414968+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(invoke_block_from_c_0+0x161) [0x7f4cba226b11] vm.c:971 2016-11-10t17:09:36.415474+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_invoke_proc+0xb8) [0x7f4cba226be8] vm.c:996 2016-11-10t17:09:36.434315+00:00 app[web.1]:   379 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/big_decimal/conversions.rb 2016-11-10t17:09:36.434315+00:00 app[web.1]:   380 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/json.rb 2016-11-10t17:09:36.434316+00:00 app[web.1]:   381 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/option_merger.rb 2016-11-10t17:09:36.434316+00:00 app[web.1]:   382 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object/with_options.rb 2016-11-10t17:09:36.415998+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_call_opt_call+0xa7) [0x7f4cba227377] vm.c:1072 2016-11-10t17:09:36.416571+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec_core+0x1fe9) [0x7f4cba222399] insns.def:995 2016-11-10t17:09:36.417032+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_exec+0x81) [0x7f4cba225fd1] vm.c:1650 2016-11-10t17:09:36.417614+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(invoke_block_from_c_0+0x161) [0x7f4cba226b11] vm.c:971 2016-11-10t17:09:36.418126+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(vm_invoke_proc+0xb8) [0x7f4cba226be8] vm.c:996 2016-11-10t17:09:36.434317+00:00 app[web.1]:   383 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/object.rb 2016-11-10t17:09:36.434317+00:00 app[web.1]:   384 /app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/paths.rb 2016-11-10t17:09:36.434318+00:00 app[web.1]:   385 /app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/rack.rb 2016-11-10t17:09:36.418718+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(thread_start_func_2+0x787) [0x7f4cba242117] thread.c:584 2016-11-10t17:09:36.419332+00:00 app[web.1]: /app/vendor/ruby-2.3.1/bin/ruby(thread_start_func_1+0xd0) [0x7f4cba2425d0] thread_pthread.c:882 2016-11-10t17:09:36.419798+00:00 app[web.1]: /lib/x86_64-linux-gnu/libpthread.so.0(start_thread+0xc4) [0x7f4cb9c6e184] 2016-11-10t17:09:36.434318+00:00 app[web.1]:   386 /app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/configuration.rb 2016-11-10t17:09:36.434319+00:00 app[web.1]:   387 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/inflector.rb 2016-11-10t17:09:36.420210+00:00 app[web.1]: /lib/x86_64-linux-gnu/libc.so.6(__clone+0x6d) [0x7f4cb925837d] 2016-11-10t17:09:36.434319+00:00 app[web.1]:   388 /app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.7.1/lib/active_support/core_ext/module/introspection.rb 2016-11-10t17:09:36.420225+00:00 app[web.1]: 2016-11-10t17:09:36.434320+00:00 app[web.1]:   389 /app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/railtie.rb 2016-11-10t17:09:36.434320+00:00 app[web.1]:   390 /app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/engine/railties.rb 2016-11-10t17:09:36.434321+00:00 app[web.1]:   391 /app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.7.1/lib/rails/engine.rb