Panic when scrolling arstechnica

[anderejd]

Scrolling with the mouse scroll wheel down the page caused the error about 2-3 pages down.

called Option::unwrap() on a None value

URL:

The arstechnica url from the start page.

Servo Version:

Servo 0.0.1-8612a87

Backtrace:

WARNING: <ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(NonZero(NonZero(7))) }>: Error at https://arstechnica.com/:31:586 this.placement.getContainer(...) is null
WARNING: <ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(NonZero(NonZero(7))) }>: Mozbrowser event after iframe (1,7)/(1,5) closed.
WARNING: <ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(NonZero(NonZero(7))) }>: Mozbrowser event after iframe (1,7)/(1,5) closed.
WARNING: <ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(NonZero(NonZero(7))) }>: Mozbrowser event after iframe (1,7)/(1,5) closed.
WARNING: <ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(NonZero(NonZero(7))) }>: Mozbrowser event after iframe (3,78)/(1,5) closed.
WARNING: <ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(NonZero(NonZero(7))) }>: Mozbrowser event after iframe (3,78)/(1,5) closed.
WARNING: <ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(NonZero(NonZero(7))) }>: Mozbrowser event after iframe (3,78)/(1,5) closed.
WARNING: <Constellation>: Pipeline PipelineId { namespace_id: PipelineNamespaceId(3), index: PipelineIndex(NonZero(NonZero(76))) } got layout tick after closure.
WARNING: <Constellation>: Pipeline PipelineId { namespace_id: PipelineNamespaceId(3), index: PipelineIndex(NonZero(NonZero(76))) } got layout tick after closure.
WARNING: <ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(NonZero(NonZero(7))) }>: Mozbrowser event after iframe (1,7)/(1,5) closed.
WARNING: <Constellation>: Pipeline PipelineId { namespace_id: PipelineNamespaceId(3), index: PipelineIndex(NonZero(NonZero(76))) } got layout tick after closure.
WARNING: <ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(NonZero(NonZero(7))) }>: Mozbrowser event after iframe (1,7)/(1,5) closed.
WARNING: <ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(NonZero(NonZero(7))) }>: Mozbrowser event after iframe (1,7)/(1,5) closed.
WARNING: <Constellation>: Pipeline PipelineId { namespace_id: PipelineNamespaceId(3), index: PipelineIndex(NonZero(NonZero(76))) } got layout tick after closure.
WARNING: <Constellation>: Pipeline PipelineId { namespace_id: PipelineNamespaceId(3), index: PipelineIndex(NonZero(NonZero(76))) } got layout tick after closure.
WARNING: <ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(NonZero(NonZero(7))) }>: Error at https://arstechnica.com/:26:1 osdlfm is not defined
WARNING: <Constellation>: Pipeline PipelineId { namespace_id: PipelineNamespaceId(3), index: PipelineIndex(NonZero(NonZero(76))) } got layout tick after closure.
WARNING: <ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1)
...

This report was generated by the browser.html issue reporter.