tab OOM crash during lighthouse run

[paulirish]

edit:I thought it was hanging forever, but... it eventually completes. (~7 min later)

lighthouse hangs foreverandever. doesn't even quit with a PAGE HUNG timeout.

....

lighthouse hangs foreverandever. doesn't even quit with a PAGE HUNG timeout.

update: nevermind. after 5 minutes it un-hung, but did hit a couple more 60sec timeouts.

local checkout.

my truncate-better-hax-OOM-hang branch. (i was noodling on connor's #14911 and apparently "improved" it so well that it crashes chrome now. 😔 ) I cant repro on his branch or main.

node cli "https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/core/frame/local_frame_mojo_handler.cc;l=1202-1220;drc=eb50e284b778aa76d405074a71bb4cac8399879b"

go/crash/34407aa1f987dfea

crash happened somewhere in/between TapTargets and TraceElements gatherers.

will be a nice testcase for the #11840 resurrection