Open Bug 1365177 Opened 3 years ago Updated Last year

Intermittent w3c-css/submitted/masking/mask-image-1c.html == w3c-css/submitted/masking/mask-image-1-ref.html | image comparison, max difference: 255, number of differing pixels: 5000

Categories

(Core :: Layout, defect)

defect
Not set

Tracking

()

REOPENED
Tracking Status
firefox58 --- disabled
firefox59 --- disabled
firefox60 --- disabled

People

(Reporter: intermittent-bug-filer, Unassigned)

References

Details

(Keywords: intermittent-failure, leave-open, Whiteboard: [stockwell disabled])

Attachments

(1 file, 4 obsolete files)

Status: NEW → RESOLVED
Closed: 2 years ago
Resolution: --- → INCOMPLETE
Status: RESOLVED → REOPENED
Resolution: INCOMPLETE → ---
:jet, could you help prioritize this bug and get this in a queue for work when appropriate.
Flags: needinfo?(bugs)
Whiteboard: [stockwell needswork]
Whiteboard: [stockwell unknown] → [stockwell needswork]
If this persists to fail at a high rate, we will gather more information and look for a developer to investigate.
In the last 7 days, there have been 44 failures.
Most of the failures occur on Linux x64. The build types affected are asan, debug, opt.

A recent log exmaple: https://treeherder.mozilla.org/logviewer.html#?repo=autoland&job_id=140140384&lineNumber=9070

And a relevant part of the log where the test failed:
2017-10-27T09:21:40.794Z] 09:21:40     INFO - REFTEST TEST-START | file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1c.html == file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1-ref.html
9069
[task 2017-10-27T09:21:40.794Z] 09:21:40     INFO - REFTEST TEST-LOAD | file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1c.html | 1435 / 1936 (74%)
9070
[task 2017-10-27T09:21:41.112Z] 09:21:41     INFO - REFTEST TEST-UNEXPECTED-FAIL | file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1c.html == file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1-ref.html | image comparison, max difference: 255, number of differing pixels: 5000
9071
[task 2017-10-27T09:21:41.122Z] 09:21:41     INFO - REFTEST   IMAGE 1 (TEST): data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAPoCAYAAAAmy5qxAAAUnElEQVR4nO3XMQEAMAyAsPo3vbpgRxMFvMwDAACIzO8AAADgDgMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDAgAAJAxIAAAQMaAAAAAGQMCAABkDA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9072
[task 2017-10-27T09:21:41.128Z] 09:21:41     INFO - REFTEST   IMAGE 2 (REFERENCE): data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAPoCAYAAAAmy5qxAAAU7UlEQVR4nO3XsQ3DQAADsR/dm8cjuAkuEUwC6tXe+QAAAETOrw8AAADvIUAAAICMAAEAADICBAAAyAgQAAAgI0AAAICMAAEAADKPAXKdy/5oAACwTICMDQAAlgmQsQEAwDIBMjYAAFgmQMYGAADLBMjYAABgmQAZGwAALBMgYwMAgGUCZGwAALBMgIwNAACWCZCxAQDAMgEyNgAAWCZAxgYAAMsEyNgAAGCZABkbAAAsEyBjAwCAZQJkbAAAsEyAjA0AAJYJkLEBAMAyATI2AABYJkDGBgAAywTI2AAAYJkAGRsAACwTIGMDAIBlAmRsAACwTICMDQAAlgmQsQEAwDIBMjYAAFgmQMYGAADLBMjYAABgmQAZGwAALBMgYwMAgGUCZGwAALBMgIwNAACWCZCxAQDAMgEyNgAAWCZAxgYAAMsEyNgAAGCZABkbAAAsEyBjAwCAZQJkbAAAsEyAjA0AAJYJkLEBAMAyATI2AABYJkDGBgAAywTI2AAAYJkAGRsAACwTIGMDAIBlAmRsAACwTICMDQAAlj0GCAAAwLcIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAICNAAACAjAABAAAyAgQAAMgIEAAAIHMDPkAuCsEbdHMAAAAASUVORK5CYII=
9073
[task 2017-10-27T09:21:41.129Z] 09:21:41     INFO - REFTEST INFO | Saved log: START file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1c.html
9074
[task 2017-10-27T09:21:41.131Z] 09:21:41     INFO - REFTEST INFO | Saved log: [CONTENT] OnDocumentLoad triggering AfterOnLoadScripts
9075
[task 2017-10-27T09:21:41.132Z] 09:21:41     INFO - REFTEST INFO | Saved log: Initializing canvas snapshot
9076
[task 2017-10-27T09:21:41.132Z] 09:21:41     INFO - REFTEST INFO | Saved log: DoDrawWindow 0,0,800,1000
9077
[task 2017-10-27T09:21:41.133Z] 09:21:41     INFO - REFTEST INFO | Saved log: [CONTENT] RecordResult fired
9078
[task 2017-10-27T09:21:41.134Z] 09:21:41     INFO - REFTEST INFO | Saved log: RecordResult fired
9079
[task 2017-10-27T09:21:41.135Z] 09:21:41     INFO - REFTEST INFO | Saved log: RecordResult fired
9080
[task 2017-10-27T09:21:41.135Z] 09:21:41     INFO - REFTEST TEST-END | file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1c.html == file:///builds/worker/workspace/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1-ref.html

:jet, can you please take a look?
Duplicate of this bug: 1414820
There have been 39 failures related to this bug in the last 7 days.

:jet any updates on this?
Pushed by gbrown@mozilla.com:
https://hg.mozilla.org/integration/mozilla-inbound/rev/72f457e76554
Disable (random-if) reftest w3c-css/submitted/masking/mask-image-1c.html on linux for frequent intermittent failures; r=me, a=test-only
Whiteboard: [stockwell disable-recommended] → [stockwell disabled]
Flags: needinfo?(bugs)
This Bug has failed 55 times in the last 7 days on Windows 10 affecting opt and pgo build types. 
Failing test: windows10-64/opt-reftest-e10, windows10-64-nightly/opt-reftest-e10.
This bug is disabled on Linux:
                            # mask-image test cases
                             == mask-image-1a.html mask-image-1-ref.html
                             == mask-image-1b.html mask-image-1-ref.html
                             -== mask-image-1c.html mask-image-1-ref.html
                             +random-if(gtkWidget) == mask-image-1c.html mask-image-1-ref.html # bug 1365177
                             == mask-image-1d.html mask-image-1-ref.html

Link to a recent log: https://treeherder.mozilla.org/logviewer.html#?repo=autoland&job_id=164626355&lineNumber=57518
Part of that log: 
REFTEST TEST-START | file:///C:/Users/task_1519743945/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1c.html == file:///C:/Users/task_1519743945/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1-ref.html
15:32:35     INFO -  REFTEST TEST-LOAD | file:///C:/Users/task_1519743945/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1c.html | 14 / 94 (14%)
15:32:36    ERROR -  REFTEST TEST-UNEXPECTED-FAIL | file:///C:/Users/task_1519743945/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1c.html == file:///C:/Users/task_1519743945/build/tests/reftest/tests/layout/reftests/w3c-css/submitted/masking/mask-image-1-ref.html | image comparison, max difference: 255, number of differing pixels: 5000

:jet do you have any updates on this bug?
Flags: needinfo?(bugs)
Whiteboard: [stockwell disabled] → [stockwell needswork]
this fails specifically on the new hardware in recent times (which we backed out temporarily)- I expect the failures to be lower this week and next week higher.  Most likely we need to fuzzy-if this.
jwatt: I would expect these two tests to be equally flaky, but it seems that only the second one (which uses a fragment identifier on the URL) is intermittent:

/masking/mask-image-1b.html
/masking/mask-image-1c.html

Can you suggest a way to make this more reliable? Thx!
Flags: needinfo?(bugs) → needinfo?(jwatt)
There have been 81 failures in the last 7 days.

Summary: Intermittent w3c-css/submitted/masking/mask-image-1c.html == w3c-css/submitted/masking/mask-image-1-ref.html | image comparison, max difference: 255, number of differing pixels: 5000

Failures per affected platforms and build types:
- windows10-64 / pgo & opt & 2 failures on debug: 54
- windows10-64-qr / opt & 1 failure on debug: 24
- windows10-64-nightly / opt: 3

Recent log with failure:
https://treeherder.mozilla.org/logviewer.html#?repo=mozilla-central&job_id=172846253&lineNumber=17766

Link to the reftest analyzer:
https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://queue.taskcluster.net/v1/task/bbj2atr6QAuKpczjhzR0mw/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1
Whiteboard: [stockwell unknown] → [stockwell needswork]
Joel, since this is ran random on Linux with this line 
random-if(gtkWidget) == mask-image-1c.html mask-image-1-ref.html # bug 1365177 
and it's failling a lot on windows opt and pgo I guess disabling this is not an option cause then the test would not be run anymore. Am I right? 
If that's the case what should we do here? Maybe wait for jwatt to take a look at this? Thanks.
Flags: needinfo?(jmaher)
Great question Cosmin, in this case we want to add a skip-if for win10.

Here is how to select win10:
https://searchfox.org/mozilla-central/search?q=%2F%5EWindows%5Cx20NT%5Cx2010%5C.0%2F.test(http.oscpu)&case=false&regexp=false&path=

and you can see many cases of skip-if:
https://searchfox.org/mozilla-central/search?q=skip-if&path=*.list

That should be enough information to go on.
Flags: needinfo?(jmaher)
Thanks for the info here Joel. Will tackle this tomorrow.
Attached file Bug_1365177 - disabled on Win (obsolete) —
Tried to disable this on Win, Joel can you take a look?
Attachment #8968163 - Flags: review?(jmaher)
I don't think that patch is right. The test is failing in the reftest suite, not web-platform-tests suite, so you need to change the line at [1] rather than the .ini file for the web-platform-test.

[1] https://searchfox.org/mozilla-central/rev/bd326a2a6b729dc62a5aee57354a97ceac4d1dc0/layout/reftests/w3c-css/submitted/masking/reftest.list#22
thanks :kats for mentioning that.  Cosmin- you caught the right syntax early on, but it is confusing as this test lives in two places- reftest and web-platform-tests-reftests!

You want to edit here instead:
https://searchfox.org/mozilla-central/source/layout/reftests/w3c-css/submitted/masking/reftest.list#22
Attachment #8968163 - Flags: review?(jmaher)
Attached patch Disable on Win10 (obsolete) — Splinter Review
Hi! Made a patch for disabling this test on Windows 10. Joel, could you please take a look at this? Thank you.
Attachment #8968420 - Flags: review?(jmaher)
Attachment #8968163 - Attachment is obsolete: true
Attachment #8968163 - Attachment is patch: false
Comment on attachment 8968420 [details] [diff] [review]
Disable on Win10

Review of attachment 8968420 [details] [diff] [review]:
-----------------------------------------------------------------

::: layout/reftests/w3c-css/submitted/masking/reftest.list
@@ +20,4 @@
>  == mask-image-1a.html mask-image-1-ref.html
>  == mask-image-1b.html mask-image-1-ref.html
>  random-if(gtkWidget) == mask-image-1c.html mask-image-1-ref.html # bug 1365177
> +skip-if(winWidget&&/^Windows\x20NT\x2010\.0/.test(http.oscpu) == mask-image-1c.html mask-image-1-ref.html # bug 1365177

you are missing a ) at the end of your skip-if.  Also you need to keep the random-if in place as that is for linux.
Attachment #8968420 - Flags: review?(jmaher) → review-
Attached patch Disable on Win ccov (obsolete) — Splinter Review
Modified it. Thanks.
Attachment #8968466 - Flags: review?(jmaher)
Attachment #8968420 - Attachment is obsolete: true
Comment on attachment 8968466 [details] [diff] [review]
Disable on Win ccov

Review of attachment 8968466 [details] [diff] [review]:
-----------------------------------------------------------------

I would change the commit message to:
Bug 1365177 - Disable w3c-css/submitted/masking/mask-image-1c.html for frequent failures on Windows 10. r=jmaher

::: layout/reftests/w3c-css/submitted/masking/reftest.list
@@ +20,4 @@
>  == mask-image-1a.html mask-image-1-ref.html
>  == mask-image-1b.html mask-image-1-ref.html
>  random-if(gtkWidget) == mask-image-1c.html mask-image-1-ref.html # bug 1365177
> +skip-if(winWidget&&/^Windows\x20NT\x2010\.0/.test(http.oscpu)) == mask-image-1c.html mask-image-1-ref.html # bug 1365177

the random-if and skip-if need to be on the same line, put the skip-if() first, then the random-if.
Attachment #8968466 - Flags: review?(jmaher) → review-
Attached patch Disable on Win10 ccov (obsolete) — Splinter Review
Third time lucky?
Attachment #8968466 - Attachment is obsolete: true
Attachment #8968471 - Flags: review?(jmaher)
Comment on attachment 8968471 [details] [diff] [review]
Disable on Win10 ccov

Review of attachment 8968471 [details] [diff] [review]:
-----------------------------------------------------------------

still missing the random-if on the same line
Attachment #8968471 - Flags: review?(jmaher) → review-
Another try. Really made a mess of this...
Attachment #8968471 - Attachment is obsolete: true
Attachment #8968476 - Flags: review?(jmaher)
Comment on attachment 8968476 [details] [diff] [review]
Disable on Win10 ccov

Review of attachment 8968476 [details] [diff] [review]:
-----------------------------------------------------------------

looks good
Attachment #8968476 - Flags: review?(jmaher) → review+
Pushed by csabou@mozilla.com:
https://hg.mozilla.org/integration/mozilla-inbound/rev/f3530ea9b461
Disable w3c-css/submitted/masking/mask-image-1c.html for frequent failures on Windows 10. r=jmaher
Whiteboard: [stockwell disable-recommended] → [stockwell disabled]
Whiteboard: [stockwell disabled] → [stockwell disabled][checkin-needed-beta]
Whiteboard: [stockwell disabled][checkin-needed-beta] → [stockwell disabled]
It would be nice to re-enable this test, but it's low priority (likely has negligible use on the Web) and has already taken up more of my time than it's worth given other priorities.
Flags: needinfo?(jwatt)
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