Filed by: hskupin [at] mozilla.com https://treeherder.mozilla.org/logviewer.html#?job_id=179991899&repo=try https://queue.taskcluster.net/v1/task/Wyzfx4PhSK-BJUZ_Tky6iQ/runs/0/artifacts/public/logs/live_backing.log https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://queue.taskcluster.net/v1/task/Wyzfx4PhSK-BJUZ_Tky6iQ/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1 [task 2018-05-24T11:45:55.056Z] 11:45:55 INFO - TEST-START | /css/compositing/mix-blend-mode/mix-blend-mode-video.html [task 2018-05-24T11:45:55.071Z] 11:45:55 INFO - PID 1425 | 1527162355064 Marionette INFO Testing http://web-platform.test:8000/css/compositing/mix-blend-mode/mix-blend-mode-video.html != http://web-platform.test:8000/css/compositing/mix-blend-mode/reference/mix-blend-mode-video-notref.html [task 2018-05-24T11:45:55.107Z] 11:45:55 INFO - PID 1425 | ++DOMWINDOW == 71 (0x7f6b95e65000) [pid = 1547] [serial = 73] [outer = 0x7f6bb7998800] [task 2018-05-24T11:45:55.164Z] 11:45:55 ERROR - PID 1425 | thread 'WRRenderBackend#2' panicked at 'assertion failed: info.ignore_missing_pipeline', gfx/webrender/src/display_list_flattener.rs:559:17 [task 2018-05-24T11:45:55.164Z] 11:45:55 INFO - PID 1425 | stack backtrace: [task 2018-05-24T11:45:55.935Z] 11:45:55 INFO - PID 1425 | 0: 0x7f50b8fc695b - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::hb98fbe643b37b8bb [task 2018-05-24T11:45:55.936Z] 11:45:55 INFO - PID 1425 | 1: 0x7f50b8fd7e7e - std::sys_common::backtrace::print::ha7844e468550fcb9 [task 2018-05-24T11:45:55.939Z] 11:45:55 INFO - PID 1425 | 2: 0x7f50b8fb70d0 - std::panicking::default_hook::{{closure}}::h83c090f00cd2917d [task 2018-05-24T11:45:55.939Z] 11:45:55 INFO - PID 1425 | 3: 0x7f50b8fb6c0c - std::panicking::default_hook::hf9722061a353cd29 [task 2018-05-24T11:45:55.940Z] 11:45:55 INFO - PID 1425 | 4: 0x7f50b8fb7555 - std::panicking::rust_panic_with_hook::h574be4fada9826dc [task 2018-05-24T11:45:55.941Z] 11:45:55 INFO - PID 1425 | 5: 0x7f50b8e73e21 - <unknown> [task 2018-05-24T11:45:55.942Z] 11:45:55 INFO - PID 1425 | Redirecting call to abort() to mozalloc_abort [task 2018-05-24T11:45:55.942Z] 11:45:55 INFO - PID 1425 | Hit MOZ_CRASH() at /builds/worker/workspace/build/src/memory/mozalloc/mozalloc_abort.cpp:34