Intermittent stylo native-theme/492155-4.html == native-theme/492155-4.html | image comparison, max difference: 1, number of differing pixels: 1

RESOLVED FIXED in Firefox 55

Status

()

RESOLVED FIXED
a year ago
a year ago

People

(Reporter: intermittent-bug-filer, Assigned: botond)

Tracking

(Blocks: 1 bug, {intermittent-failure})

unspecified
mozilla55
intermittent-failure
Points:
---
Dependency tree / graph

Firefox Tracking Flags

(firefox55 fixed)

Details

(Whiteboard: [stockwell fixed:other])

Attachments

(1 attachment)

Flags: needinfo?(botond)
(Assignee)

Comment 1

a year ago
The failure is caused by a single color value difference of a single pixel at the edge of a scrollbar thumb. This is a benign difference that's consistent with e.g. the thumb being layerized in one image, and not in the other, and could plausibly have been caused by bug 1367488 since it potentially changes the visible region and clip rect on a thumb layer.

Since the difference is benign, it should be appropriate to fuzz it away. However, I'm not sure where to insert a fuzzing annotation in this case, since the comparison being done in the failing test (492155-4.html == 492155-4.html) does not match what is in reftest.list (492155-4.html != about:blank). I assume there is something Stylo-specific going on here (like the page rendered with Stylo is being compared to the page rendered without Stylo), but I'm not sure whether to insert a fuzzing annotation in such a situation.
Flags: needinfo?(botond)
the fuzzy condition in this case would be fuzzy-if(styloVsGecko,1,1)
or even better, fuzzy-if(styloVsGecko,0-1,0-1) since it seems to be intermittent

:)
(Assignee)

Comment 4

a year ago
Thanks, Kats!
Assignee: nobody → botond
Comment hidden (mozreview-request)

Comment 6

a year ago
mozreview-review
Comment on attachment 8874001 [details]
Bug 1369828 - Fuzz native-theme/492155-4.html during stylo-vs-gecko comparison.

https://reviewboard.mozilla.org/r/145452/#review149376
Attachment #8874001 - Flags: review?(mstange) → review+
Went ahead and triggered autoland for this so I can get it included in my merge of autoland to mozilla-central tonight.

Comment 8

a year ago
Pushed by kwierso@gmail.com:
https://hg.mozilla.org/integration/autoland/rev/60b41398d6c2
Fuzz native-theme/492155-4.html during stylo-vs-gecko comparison. r=mstange

Comment 9

a year ago
Pushed by kwierso@gmail.com:
https://hg.mozilla.org/mozilla-central/rev/43039280fe46
Fuzz native-theme/492155-4.html during stylo-vs-gecko comparison. r=mstange a=bustage

Comment 10

a year ago
bugherder
https://hg.mozilla.org/mozilla-central/rev/43039280fe46
Status: NEW → RESOLVED
Last Resolved: a year ago
status-firefox55: --- → fixed
Resolution: --- → FIXED
Target Milestone: --- → mozilla55
71 failures in 149 pushes (0.477 failures/push) were associated with this bug yesterday.   

Repository breakdown:
* autoland: 71

Platform breakdown:
* linux64-stylo: 52
* linux64-stylo-sequential: 19

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1369828&startday=2017-06-02&endday=2017-06-02&tree=all
69 failures in 820 pushes (0.084 failures/push) were associated with this bug in the last 7 days. 

This is the #15 most frequent failure this week.  

** This failure happened more than 30 times this week! Resolving this bug is a high priority. **

** Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled. ** 

Repository breakdown:
* autoland: 69

Platform breakdown:
* linux64-stylo: 51
* linux64-stylo-sequential: 18

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1369828&startday=2017-05-29&endday=2017-06-04&tree=all
Whiteboard: [stockwell fixed:other]
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