This error occurred while I tried to set up some [otherwise unused] fyi waterfall configurations [the CL has no effect on this test].

https://luci-logdog.appspot.com/v/?s=chromium%2Fbb%2Ftryserver.chromium.win%2Fwin_chromium_x64_rel_ng%2F487577%2F%2B%2Frecipes%2Fsteps%2Ftelemetry_perf_unittests__with_patch_%2F0%2Fstdout


	RetAddr           : Args to Child                                                           : Call Site
  	000007fe`ed491e57 : 00000000`0023c620 000007fe`ed4b82e1 00000000`0023ca60 00000000`0023c5e8 : chrome!base::debug::BreakDebugger+0xd
  	000007fe`ed4bdcd2 : 00000000`0ca1b640 000007fe`efe529a0 000007fe`efe529a0 00000000`0023c5d8 : chrome!?Run@?$Invoker@U?$BindState@P6AXPEBDHV?$BasicStringPiece@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@base@@1@Z$$V@internal@base@@$$A6AXPEBDHV?$BasicStringPiece@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@3@1@Z@internal@base@@SAXPEAVBindStateBase@23@$$QEAPEBD$$QEAH$$QEAV?$BasicStringPiece@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@3@3@Z+0x43
  	000007fe`ecbfcf39 : 00000000`00000002 00000000`00000030 00000000`02572830 00000000`0b4fa2e0 : chrome!logging::LogMessage::~LogMessage+0x512
  	000007fe`ee70f7c4 : 00000000`0023cd00 000007fe`ee20cc82 00000000`0023cc78 000007fe`ed224035 : chrome!policy::SchemaRegistry::UnregisterComponent+0x119
  	000007fe`ed1bd94b : 00000010`00000002 00000000`00000030 ffffffff`00000000 00000020`00000013 : chrome!extensions::ManagedValueStoreCache::ExtensionTracker::OnExtensionUninstalled+0x7c
  	000007fe`ee67f8f8 : 00000000`0023d060 00000000`00000000 00000000`770603d0 00000000`00000000 : chrome!extensions::ExtensionRegistry::TriggerOnUninstalled+0x131
  	000007fe`ee67c43b : 00000000`0023d150 000007fe`ed4e09de 00000000`02478050 00000000`0023ddc0 : chrome!ExtensionService::UninstallExtension+0x34c
  	000007fe`ee6813ff : 0000e6d6`1c767eb2 000007fe`efe58158 000007fe`efe58160 000007fe`ecd177a3 : chrome!ExtensionService::CheckExternalUninstall+0x14b
  	000007fe`ee681521 : 000007fe`efe58158 000007fe`ed503029 00000000`00000000 00000000`0000007f : chrome!ExtensionService::OnAllExternalProvidersReady+0x181
  	000007fe`ee6b0483 : 000007fe`efe58160 000007fe`ecd177a3 00000000`02400230 000007fe`ed4ff6b8 : chrome!ExtensionService::OnExternalProviderReady+0xbb
  	000007fe`ee6ecd31 : 00000000`0023d658 000007fe`ed4dc74e 00000000`0023d9e0 00000000`00000000 : chrome!extensions::ExternalProviderImpl::SetPrefs+0xed
  	000007fe`ee6ee380 : 00000000`0023d808 000007fe`ed515141 000007fe`000015cc 0000e6d6`1c767eb2 : chrome!extensions::ExternalLoader::LoadFinished+0x6d
  	000007fe`ee32285c : 00000000`0023dec8 00000000`0023dec8 00000000`0023d9e0 000007fe`ed517bdd : chrome!extensions::ExternalRegistryLoader::CompleteLoadAndStartWatchingRegistry+0xba
  	000007fe`ed57f3a1 : 00000000`000015cc 00000000`000015cc 0000e6d6`1c767eb2 00000000`02478118 : chrome!base::internal::Invoker<base::internal::BindState<void (__cdecl component_updater::DefaultComponentInstaller::*)(std::unique_ptr<base::DictionaryValue,std::default_delete<base::DictionaryValue> >) __ptr64,scoped_refptr<component_updater::DefaultComponentInstaller>,base::internal::PassedWrapper<std::unique_ptr<base::DictionaryValue,std::default_delete<base::DictionaryValue> > > >,void __cdecl(void)>::Run+0x46
  	000007fe`ed50d7ab : 00000000`00000000 00000000`00000000 00000000`00000200 00000000`f80001f9 : chrome!base::debug::TaskAnnotator::RunTask+0x211
  	000007fe`ed50d9f9 : 00000000`096bc9c0 000007fe`ed580a81 00000000`02478118 0000e6d6`1c767eb2 : chrome!base::MessageLoop::RunTask+0x39b
  	000007fe`ed50dedf : 00000000`0c73b160 00000000`02478118 00000000`02478050 000007fe`ed50dc00 : chrome!base::MessageLoop::DeferOrRunPendingTask+0xc9
  	000007fe`ed5810c0 : 00000000`0023e2e8 00000000`00000000 00000000`025421d0 0000e6d6`1c767eb2 : chrome!base::MessageLoop::DoWork+0x1ff
  	000007fe`ed580b74 : 00000000`0023e2e8 000007fe`ed515a53 000007fe`eded0a58 000007fe`edecc848 : chrome!base::MessagePumpForUI::DoRunLoop+0xb0
  	000007fe`ed50cf48 : 00000000`0023e2e8 000007fe`ed517e36 0000e6d6`1c767eb2 00000000`0023e2e8 : chrome!base::MessagePumpWin::Run+0x64
  	000007fe`ed534830 : 0000e6d6`1c767eb2 00000000`0023e328 00000000`00000000 00000000`000001f4 : chrome!base::MessageLoop::Run+0xb8
  	000007fe`ed42878a : 0000e6d6`1c767eb2 00000000`0023e720 00000000`0000002f 000007fe`ed4e9979 : chrome!base::RunLoop::Run+0xa0
  	000007fe`ecd0b859 : 0000e6d6`1c767eb2 00000000`ffffffff 00000000`0c8ad9b0 000007fe`ecd0e282 : chrome!ChromeBrowserMainParts::MainMessageLoopRun+0x18e
  	000007fe`ecd0e338 : 00000000`0002654c 00000000`00000030 00000000`000003e8 00000000`00989680 : chrome!content::BrowserMainLoop::RunMainMessageLoopParts+0xd3
  	000007fe`ecd0789f : 00000000`0023ebf8 00000000`00000000 000007fe`efe787e0 000007fe`ec913157 : chrome!content::BrowserMainRunnerImpl::Run+0xa2
  	000007fe`ed37f219 : 00000000`00000001 00000000`00000000 00000000`00000000 000007fe`ed4b9270 : chrome!content::BrowserMain+0x10b
  	000007fe`ed37f900 : 00000000`02473980 00000000`00000010 00000000`02473980 0000676e`6967676f : chrome!content::RunNamedProcessTypeMain+0x12d
  	000007fe`ed3989a9 : 00000000`00000000 00000000`00000000 00000000`02547020 00000000`00000001 : chrome!content::ContentMainRunnerImpl::Run+0x1be
  	000007fe`ed37f0c6 : 00000000`02473ee0 000007fe`ed4b8f17 00000000`0023f2c8 0000e6d6`1c767eb2 : chrome!service_manager::Main+0x565
  	000007fe`ec9111d2 : 00000000`0023f188 00000000`0023f17f 00000000`0023f2a0 00000001`3f0cd1ce : chrome!content::ContentMain+0x3e
  	*** WARNING: Unable to verify checksum for chrome.exe
  	00000001`3f0464a1 : 00000000`02298670 000007fe`ec911098 00000000`02298660 00000000`00000000 : chrome!ChromeMain+0x13a
  	00000001`3f041939 : 00000000`0000000a 00000000`76d40d24 00000000`00000004 00000000`00000002 : chrome_exe!MainDllLoader::Launch+0x131
  	00000001`3f131dd3 : 00000000`00000000 00000000`00000000 00000000`00000000 01d3107d`e4f6bf16 : chrome_exe!wWinMain+0x939
  	*** WARNING: Unable to verify checksum for kernel32.dll
  	*** ERROR: Symbol file could not be found.  Defaulted to export symbols for kernel32.dll - 
  	(Inline Function) : --------`-------- --------`-------- --------`-------- --------`-------- : chrome_exe!invoke_main+0x21
  	00000000`76e459cd : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : chrome_exe!__scrt_common_main_seh+0x117
  	00000000`76f7b891 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : kernel32!BaseThreadInitThunk+0xd
  	00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!RtlUserThreadStart+0x21