1566480 - Intermittent position-relative/table-collapse-3.html == position-relative/table-collapse-3-ref.html | image comparison, max difference: 140, number of differing pixels: 10

Status: RESOLVED INCOMPLETE

(Core :: Layout: Positioned, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: cbrindusan [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer.html#?job_id=256744154&repo=autoland
Full log: https://queue.taskcluster.net/v1/task/W6lxBkWjTKKJTgHu02QcXg/runs/0/artifacts/public/logs/live_backing.log
Reftest URL: https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://queue.taskcluster.net/v1/task/W6lxBkWjTKKJTgHu02QcXg/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

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[task 2019-07-16T14:43:17.905Z] 14:43:17 INFO - REFTEST TEST-START | http://10.0.2.2:8854/tests/layout/reftests/position-relative/table-collapse-3.html == http://10.0.2.2:8854/tests/layout/reftests/position-relative/table-collapse-3-ref.html
[task 2019-07-16T14:43:17.905Z] 14:43:17 INFO - REFTEST TEST-LOAD | http://10.0.2.2:8854/tests/layout/reftests/position-relative/table-collapse-3.html | 3131 / 7752 (40%)
[task 2019-07-16T14:43:17.905Z] 14:43:17 INFO - REFTEST TEST-LOAD | http://10.0.2.2:8854/tests/layout/reftests/position-relative/table-collapse-3-ref.html | 3131 / 7752 (40%)
[task 2019-07-16T14:43:17.905Z] 14:43:17 INFO - REFTEST TEST-UNEXPECTED-FAIL | http://10.0.2.2:8854/tests/layout/reftests/position-relative/table-collapse-3.html == http://10.0.2.2:8854/tests/layout/reftests/position-relative/table-collapse-3-ref.html | image comparison, max difference: 140, number of differing pixels: 10

Comment 1

[Daniel Holbert [:dholbert]]

This looks like a "real" border-collapsing test-failure/bug (perhaps a bit of nondeterminism somewhere).

The reftest failure screenshot shows a bit of missing golden border at the top-center edge of a column-spanning cell (where a vertical border comes in and intersects it from the top).

Comment 2

[Intermittent Failures Robot]

1 failures in 4298 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1

Platform breakdown:

• android-em-7-0-x86_64: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures.html#/bugdetails?bug=1566480&startday=2019-07-15&endday=2019-07-21&tree=all

Comment 3

[Firefox Bug Husbandry Bot]

https://wiki.mozilla.org/Bug_Triage#Intermittent_Test_Failure_Cleanup