1142990 - Try-R6 VS tc-R6 Linux Mulet reftests

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: Gaia, defect)

Description

[:gerard-majax]

We have a different set of failures on tc-R6 than on try R6:
http://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://queue.taskcluster.net/v1/task/GVVjzt6LR82-DJB6i0xQvQ/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

Those are failing on tc-R6 but are ok on try R6:
> REFTEST TEST-UNEXPECTED-FAIL | file:///home/worker/build/tests/reftest/tests/layout/reftests/svg/gradient-live-01a.svg | image comparison (==), max difference: 1, number of differing pixels: 1130
> REFTEST TEST-UNEXPECTED-FAIL | file:///home/worker/build/tests/reftest/tests/layout/reftests/svg/gradient-live-01b.svg | image comparison (==), max difference: 1, number of differing pixels: 1130
> REFTEST TEST-UNEXPECTED-FAIL | file:///home/worker/build/tests/reftest/tests/layout/reftests/svg/gradient-live-01c.svg | image comparison (==), max difference: 1, number of differing pixels: 1130
> REFTEST TEST-UNEXPECTED-FAIL | file:///home/worker/build/tests/reftest/tests/layout/reftests/svg/gradient-live-01d.svg | image comparison (==), max difference: 1, number of differing pixels: 1130
> REFTEST TEST-UNEXPECTED-FAIL | file:///home/worker/build/tests/reftest/tests/layout/reftests/writing-mode/1136557-1-nested-spans.html | image comparison (==), max difference: 23, number of differing pixels: 3
> REFTEST TEST-UNEXPECTED-FAIL | file:///home/worker/build/tests/reftest/tests/layout/reftests/writing-mode/1136557-2-nested-spans.html | image comparison (==), max difference: 23, number of differing pixels: 3
> REFTEST TEST-UNEXPECTED-FAIL | file:///home/worker/build/tests/reftest/tests/layout/reftests/writing-mode/1136557-3-nested-spans.html | image comparison (==), max difference: 23, number of differing pixels: 3 

Each time, according to the reftest analyzer, it seems to be just one very slight pixel color different in grays or gradient. Given a differing pixel, the differences are:
 - test image: (r, g, b) = (x, y-1, z+1)
 - ref image: (r, g, b) = (x, y, z)