news.google.com crashes with a webrender stack trace

[dralley]

[dalley@localhost servo]$ python3 ./mach run https://news.google.com/
Stack trace for thread "WRSceneBuilder#0"
stack backtrace:
   0: servo::backtrace::print
   1: servo::install_crash_handler::handler
   2: _ZL15WasmTrapHandleriP9siginfo_tPv
   3: <unknown>
   4: peek_poke::peek_from_default
   5: peek_poke::peek_from_default
   6: peek_poke::peek_from_slice
   7: webrender_api::display_list::BuiltDisplayListIter::next_raw
   8: webrender_api::display_list::BuiltDisplayListIter::next
   9: webrender::scene_building::SceneBuilder::build_items
  10: webrender::scene_building::SceneBuilder::build_stacking_context
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  12: webrender::scene_building::SceneBuilder::build_reference_frame
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 868: webrender::scene_building::SceneBuilder::build_reference_frame
 869: webrender::scene_building::SceneBuilder::build_items
 870: webrender::scene_building::SceneBuilder::build_reference_frame
 871: webrender::scene_building::SceneBuilder::build_items
 872: webrender::scene_building::SceneBuilder::build_stacking_context
 873: webrender::scene_building::SceneBuilder::build_items
 874: webrender::scene_building::SceneBuilder::build_stacking_context
 875: webrender::scene_building::SceneBuilder::build_items
 876: webrender::scene_building::SceneBuilder::build
 877: webrender::scene_builder_thread::SceneBuilderThread::process_transaction
 878: webrender::scene_builder_thread::SceneBuilderThread::run::{{closure}}
 879: core::iter::adapters::map_fold::{{closure}}
 880: core::iter::traits::iterator::Iterator::fold::ok::{{closure}}
 881: core::iter::traits::iterator::Iterator::try_fold
 882: core::iter::traits::iterator::Iterator::fold
 883: <core::iter::adapters::Map<I,F> as core::iter::traits::iterator::Iterator>::fold
 884: core::iter::traits::iterator::Iterator::for_each
 885: <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T,I>>::spec_extend
 886: <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T,I>>::from_iter
 887: <alloc::vec::Vec<T> as core::iter::traits::collect::FromIterator<T>>::from_iter
 888: core::iter::traits::iterator::Iterator::collect
 889: webrender::scene_builder_thread::SceneBuilderThread::run
 890: webrender::renderer::Renderer::new::{{closure}}
 891: std::sys_common::backtrace::__rust_begin_short_backtrace
 892: std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}
 893: <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
 894: std::panicking::try::do_call
 895: __rust_try
 896: std::panicking::try::do_try
 897: std::panicking::try
 898: std::panic::catch_unwind
 899: std::thread::Builder::spawn_unchecked::{{closure}}
 900: core::ops::function::FnOnce::call_once{{vtable.shim}}
 901: <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once
 902: std::sys::unix::thread::Thread::new::thread_start
 903: start_thread
 904: __clone
%c%s
color: red; background: yellow; font-size: 24px;
Servo exited with return value 11

Once resolved, validate and close #12180 also.

[dralley]

Fedora 32 beta, Wayland, kernel 5.5, Mesa 20.0.2, AMD Vega 56

[nicoabie]

Now it seems to not panic but it throws the following error many times

[2020-07-25T20:52:05Z ERROR script::dom::bindings::error] Error at :0:0 uncaught exception: unknown (can't convert to string)