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Intermittent crash in /html/browsers/history/the-location-interface/location-protocol-setter.html #20839

@emilio

Description

@emilio
Details
  ▶ CRASH [expected OK] /html/browsers/history/the-location-interface/location-protocol-setter.html
  │ 
  │ VMware, Inc.
  │ softpipe
  │ 3.3 (Core Profile) Mesa 18.1.0-devel
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 1)), pipeline_id: PipelineId(1, 2) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 1)), pipeline_id: PipelineId(1, 5) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 1)), pipeline_id: PipelineId(1, 2) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 1)), pipeline_id: PipelineId(1, 5) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 1)), pipeline_id: PipelineId(1, 2) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 1)), pipeline_id: PipelineId(1, 5) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 1)), pipeline_id: PipelineId(1, 2) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 1)), pipeline_id: PipelineId(1, 5) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 1)), pipeline_id: PipelineId(1, 2) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 1)), pipeline_id: PipelineId(1, 5) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 1)), pipeline_id: PipelineId(1, 5) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 1)), pipeline_id: PipelineId(1, 5) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 1)), pipeline_id: PipelineId(1, 5) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 1)), pipeline_id: PipelineId(1, 5) }
  │ ERROR 2018-05-20T18:30:31Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 1)), pipeline_id: PipelineId(1, 5) }
  │ ERROR 2018-05-20T18:30:32Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 3)), pipeline_id: PipelineId(1, 9) }
  │ ERROR 2018-05-20T18:30:32Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 3)), pipeline_id: PipelineId(1, 12) }
  │ ERROR 2018-05-20T18:30:32Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 3)), pipeline_id: PipelineId(1, 9) }
  │ ERROR 2018-05-20T18:30:32Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 3)), pipeline_id: PipelineId(1, 12) }
  │ ERROR 2018-05-20T18:30:32Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 3)), pipeline_id: PipelineId(1, 9) }
  │ ERROR 2018-05-20T18:30:32Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 3)), pipeline_id: PipelineId(1, 12) }
  │ ERROR 2018-05-20T18:30:32Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 3)), pipeline_id: PipelineId(1, 9) }
  │ ERROR 2018-05-20T18:30:32Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 3)), pipeline_id: PipelineId(1, 12) }
  │ ERROR 2018-05-20T18:30:32Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 3)), pipeline_id: PipelineId(1, 9) }
  │ ERROR 2018-05-20T18:30:32Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 3)), pipeline_id: PipelineId(1, 12) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 3)), pipeline_id: PipelineId(1, 9) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 3)), pipeline_id: PipelineId(1, 12) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 3)), pipeline_id: PipelineId(1, 12) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 4)), pipeline_id: PipelineId(1, 66) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 4)), pipeline_id: PipelineId(1, 69) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 4)), pipeline_id: PipelineId(1, 66) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 4)), pipeline_id: PipelineId(1, 69) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 4)), pipeline_id: PipelineId(1, 66) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 4)), pipeline_id: PipelineId(1, 69) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 4)), pipeline_id: PipelineId(1, 66) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 4)), pipeline_id: PipelineId(1, 69) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 4)), pipeline_id: PipelineId(1, 66) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 4)), pipeline_id: PipelineId(1, 69) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 4)), pipeline_id: PipelineId(1, 66) }
  │ ERROR 2018-05-20T18:30:33Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 4)), pipeline_id: PipelineId(1, 69) }
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(46) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(26) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(39) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(40) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(32) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(25) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(61) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(55) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(20) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(24) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(48) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(58) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(62) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(59) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(31) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(54) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(45) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(57) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(49) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(60) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(47) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(43) }, at libcore/result.rs:945)
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(30) }, at libcore/result.rs:945)
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 4)), pipeline_id: PipelineId(1, 66) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 4)), pipeline_id: PipelineId(1, 69) }
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(21) }, at libcore/result.rs:945)
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 4)), pipeline_id: PipelineId(1, 66) }
  │ Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" }) (thread ScriptThread PipelineId { namespace_id: PipelineNamespaceId(1), index: PipelineIndex(37) }, at libcore/result.rs:945)
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 4)), pipeline_id: PipelineId(1, 69) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 4)), pipeline_id: PipelineId(1, 66) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 4)), pipeline_id: PipelineId(1, 66) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 4)), pipeline_id: PipelineId(1, 67) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 5)), pipeline_id: PipelineId(1, 73) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 5)), pipeline_id: PipelineId(1, 76) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 5)), pipeline_id: PipelineId(1, 73) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 5)), pipeline_id: PipelineId(1, 76) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(2, PipelineId(0, 5)), pipeline_id: PipelineId(1, 73) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 5)), pipeline_id: PipelineId(1, 76) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 5)), pipeline_id: PipelineId(1, 76) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 5)), pipeline_id: PipelineId(1, 76) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 5)), pipeline_id: PipelineId(1, 76) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 5)), pipeline_id: PipelineId(1, 76) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 5)), pipeline_id: PipelineId(1, 76) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 5)), pipeline_id: PipelineId(1, 76) }
  │ ERROR 2018-05-20T18:30:34Z: webrender::display_list_flattener: Unknown pipeline used for iframe IframeDisplayItem { clip_id: Clip(3, PipelineId(0, 5)), pipeline_id: PipelineId(1, 76) }
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5b10 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ stack backtrace:
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ stack backtrace:
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ stack backtrace:
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  │ stack backtrace:
  │    0:     0x7f54fea3b43c - backtrace::backtrace::trace::h342f5d76ca5ceb8f
  │    1:     0x7f54fea3a802 - backtrace::capture::Backtrace::new::hb9e84455e6bd3454
  │    2:     0x7f54fb9c678c - servo::main::{{closure}}::h50b52bdbce7e277d
  │    3:     0x7f54fea5c4f9 - std::panicking::rust_panic_with_hook::hfd6818535490a12f
  │                         at libstd/panicking.rs:401
  │    4:     0x7f54fea5c301 - std::panicking::begin_panic_fmt::hb49e0372029a7978
  │                         at libstd/panicking.rs:347
  │    5:     0x7f54fea5c252 - rust_begin_unwind
  │                         at libstd/panicking.rs:323
  │    6:     0x7f54fea81080 - core::panicking::panic_fmt::he07a59762014a101
  │                         at libcore/panicking.rs:71
  │    7:     0x7f54fc64482d - core::result::unwrap_failed::h5e6fde05f31bc133
  │    8:     0x7f54fbf01a6b - script::script_thread::ScriptThread::remote_window_proxy::h9190e69aa6c8366e
  │    9:     0x7f54fbefd8f8 - script::script_thread::ScriptThread::handle_page_headers_available::hf86e11f257abade4
  │   10:     0x7f54fcc4f55c - <std::thread::local::LocalKey<T>>::with::h8d93e1b817a84442
  │   11:     0x7f54fbed6bc1 - <script::dom::servoparser::ParserContext as net_traits::FetchResponseListener>::process_response::h4239eb35141b2fde
  │   12:     0x7f54fbef36d4 - script::script_thread::ScriptThread::handle_msg_from_constellation::h7d24f584f9275058
  │   13:     0x7f54fbee9e55 - script::script_thread::ScriptThread::handle_msgs::hfd5f5a390b4ad4d6
  │   14:     0x7f54fbee5c15 - script::script_thread::ScriptThread::start::h242fa4dc6f05fc78
  │   15:     0x7f54fc3a4c92 - profile_traits::mem::ProfilerChan::run_with_memory_reporting::h6428ac4d5d359605
  │   16:     0x7f54fc7af67e - std::sys_common::backtrace::__rust_begin_short_backtrace::h109e8e0d145428cd
  │   17:     0x7f54fcac5bc5 - _ZN3std9panicking3try7do_call17ha82c03d37b5cbb75E.llvm.14817793878898900710
  │   18:     0x7f54fea719be - __rust_maybe_catch_panic
  │                         at libpanic_unwind/lib.rs:101
  │   19:     0x7f54fca64490 - <F as alloc::boxed::FnBox<A>>::call_box::hfcc420e83c7146a8
  │   20:     0x7f54fea65fb7 - <alloc::boxed::Box<alloc::boxed::FnBox<A, Output$u3d$R$GT$$u20$$u2b$$u20$$u27$a$GT$$u20$as$u20$core..ops..function..FnOnce$LT$A$GT$$GT$::call_once::h9987f61f4f93afa5
  │                         at /checkout/src/liballoc/boxed.rs:645
  │                          - std::sys_common::thread::start_thread::h7a671b9cfa13995a
  │                         at libstd/sys_common/thread.rs:24
  │   21:     0x7f54fea4e198 - std::sys::unix::thread::Thread::new::thread_start::had4c521b4cf0110f
  │                         at libstd/sys/unix/thread.rs:90
  │   22:     0x7f54fa8b4183 - start_thread
  │   23:     0x7f54f917b03c - clone
  │   24:                0x0 - <unknown>
  │ ERROR 2018-05-20T18:30:34Z: servo: Failed to get frame id from constellation.: Io(Os { code: 104, kind: ConnectionReset, message: "Connection reset by peer" })
  └ Pipeline failed in hard-fail mode.  Crashing!

cc @cbrewster

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