December 23 ToT custom build 83e9a66e233a40efe2c790e4df5831979bf16dcc had crashed when I returned on Dec 27.

It seems wrong for the update_client even to run on a custom build??

args.gn:
 is_component_build = true
 is_debug = false
 dcheck_always_on = true
 enable_nacl = false
 remove_webcore_debug_symbols = true
 use_goma = true
 target_os = "chromeos"

#0 0x7fda22e3c78e base::debug::StackTrace::StackTrace()
#1 0x7fda22e5e4ca logging::LogMessage::~LogMessage()
#2 0x7fda22edc373 base::ThreadTaskRunnerHandle::Get()
#3 0x7fda245aaa70 content::UtilityProcessMojoClient<>::Start()
#4 0x7fda245aa443 component_updater::ChromeOutOfProcessPatcher::Patch()
#5 0x7fda247fc6fc update_client::DeltaUpdateOpPatch::DoRun()
#6 0x7fda247fbc71 update_client::DeltaUpdateOp::Run()
#7 0x7fda24803e2b update_client::ComponentPatcher::PatchNextFile()
#8 0x7fda24803a82 update_client::ComponentPatcher::StartPatching()
#9 0x7fda23ad8a94 _ZN4base8internal7InvokerINS0_9BindStateIMN38OAuth2AccessTokenFetcherImmediateError10FailCallerEFvvEJ13scoped_refptrIS4_EEEEFvvEE3RunEPNS0_13BindStateBaseE
#10 0x7fda22e3d34e base::debug::TaskAnnotator::RunTask()
#11 0x7fda22ec5f14 base::internal::TaskTracker::PerformRunTask()
#12 0x7fda22ec625a base::internal::TaskTrackerPosix::PerformRunTask()
#13 0x7fda22ec5690 base::internal::TaskTracker::RunTask()
#14 0x7fda22ebeb5d base::internal::SchedulerWorker::Thread::ThreadMain()
#15 0x7fda22ed14fc base::(anonymous namespace)::ThreadFunc()
#16 0x7fda22faa184 start_thread
#17 0x7fda18c6c37d clone