1981863 - Intermittent browser/extensions/newtab/test/browser/browser_ohttpImages.js | Nimbus config update happened - Got undefined, expected "ohttpImagesConfig"

Status: RESOLVED FIXED

(Firefox :: New Tab Page, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: smolnar [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=521453971&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Nnih6f8SRl-Wikr3mK8v1Q/runs/0/artifacts/public/logs/live_backing.log
Reftest URL: https://hg.mozilla.org/mozilla-central/raw-file/default/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Nnih6f8SRl-Wikr3mK8v1Q/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---

TEST-START | browser/extensions/newtab/test/browser/browser_ohttpImages.js
[task 2025-08-07T19:41:05.549+00:00] 19:41:05     INFO - GECKO(1443) | console.debug: NimbusEnrollments:
[task 2025-08-07T19:41:05.549+00:00] 19:41:05     INFO - GECKO(1443) |   Queued update for enrollment newtabOhttpImages-experiment-0.8522175729122988
[task 2025-08-07T19:41:05.556+00:00] 19:41:05     INFO - GECKO(1443) | console.debug: ExperimentManager:
[task 2025-08-07T19:41:05.556+00:00] 19:41:05     INFO - GECKO(1443) |   New experiment started: newtabOhttpImages-experiment-0.8522175729122988, control
[task 2025-08-07T19:41:05.562+00:00] 19:41:05     INFO - TEST-INFO | started process screentopng
[task 2025-08-07T19:41:05.845+00:00] 19:41:05     INFO - TEST-INFO | screentopng: exit 0
[task 2025-08-07T19:41:05.845+00:00] 19:41:05     INFO - Buffered messages logged at 19:41:05
[task 2025-08-07T19:41:05.845+00:00] 19:41:05     INFO - Entering test bound test_nimbus_experiment_enabled
[task 2025-08-07T19:41:05.845+00:00] 19:41:05     INFO - Buffered messages finished
[task 2025-08-07T19:41:05.846+00:00] 19:41:05     INFO - TEST-UNEXPECTED-FAIL | browser/extensions/newtab/test/browser/browser_ohttpImages.js | Nimbus config update happened - Got undefined, expected "ohttpImagesConfig"
[task 2025-08-07T19:41:05.846+00:00] 19:41:05     INFO - Stack trace:
[task 2025-08-07T19:41:05.847+00:00] 19:41:05     INFO - chrome://mochikit/content/browser-test.js:test_is:1733
[task 2025-08-07T19:41:05.849+00:00] 19:41:05     INFO - chrome://mochitests/content/browser/browser/extensions/newtab/test/browser/browser_ohttpImages.js:test_nimbus_experiment_enabled:22
[task 2025-08-07T19:41:05.849+00:00] 19:41:05     INFO - chrome://mochikit/content/browser-test.js:handleTask:1238
[task 2025-08-07T19:41:05.849+00:00] 19:41:05     INFO - chrome://mochikit/content/browser-test.js:_runTaskBasedTest:1314
[task 2025-08-07T19:41:05.849+00:00] 19:41:05     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1461
[task 2025-08-07T19:41:05.849+00:00] 19:41:05     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1214
[task 2025-08-07T19:41:05.849+00:00] 19:41:05     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1058
[task 2025-08-07T19:41:05.849+00:00] 19:41:05     INFO - Not taking screenshot here: see the one that was previously logged
[task 2025-08-07T19:41:05.849+00:00] 19:41:05     INFO - TEST-UNEXPECTED-FAIL | browser/extensions/newtab/test/browser/browser_ohttpImages.js | Uncaught exception in test bound test_nimbus_experiment_enabled - at chrome://mochitests/content/browser/browser/extensions/newtab/test/browser/browser_ohttpImages.js:29 - TypeError: can't access property "enabled", onActionSpy.firstCall.args[0].data.value is undefined
[task 2025-08-07T19:41:05.849+00:00] 19:41:05     INFO - Stack trace:
[task 2025-08-07T19:41:05.849+00:00] 19:41:05     INFO - test_nimbus_experiment_enabled@chrome://mochitests/content/browser/browser/extensions/newtab/test/browser/browser_ohttpImages.js:29:5
[task 2025-08-07T19:41:05.849+00:00] 19:41:05     INFO - async*handleTask@chrome://mochikit/content/browser-test.js:1238:26
[task 2025-08-07T19:41:05.849+00:00] 19:41:05     INFO - _runTaskBasedTest@chrome://mochikit/content/browser-test.js:1314:18
[task 2025-08-07T19:41:05.850+00:00] 19:41:05     INFO - Tester_execTest@chrome://mochikit/content/browser-test.js:1461:14
[task 2025-08-07T19:41:05.850+00:00] 19:41:05     INFO - nextTest/<@chrome://mochikit/content/browser-test.js:1214:14
[task 2025-08-07T19:41:05.850+00:00] 19:41:05     INFO - SimpleTest.waitForFocus/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:1058:13
[task 2025-08-07T19:41:05.850+00:00] 19:41:05     INFO - Leaving test bound test_nimbus_experiment_enabled
[task 2025-08-07T19:41:05.851+00:00] 19:41:05     INFO - GECKO(1443) | [fluent-dom] While translating an element with fluent ID "newtab-topsites-add-shortcut-label" a child element of type "br" was removed. Either the fluent message does not contain markup, or it does not contain markup of this type.
[task 2025-08-07T19:41:05.852+00:00] 19:41:05     INFO - GECKO(1443) | [Child 1695, Main Thread] WARNING: 'ps->NeedLayoutFlush()', file /builds/worker/checkouts/gecko/dom/base/Document.cpp:18654
[task 2025-08-07T19:41:05.901+00:00] 19:41:05     INFO - Console message: [JavaScript Warning: "[fluent-dom] While translating an element with fluent ID "newtab-topsites-add-shortcut-label" a child element of type "br" was removed. Either the fluent message does not contain markup, or it does not contain markup of this type." {file: "about:newtab" line: 0}]
[task 2025-08-07T19:41:06.078+00:00] 19:41:06     INFO - GECKO(1443) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmplkaijhbc.mozrunner/runtests_leaks_tab_pid1752.log
[task 2025-08-07T19:41:06.370+00:00] 19:41:06     INFO - GECKO(1443) | console.debug: AboutNewTabResourceMapping: "_updateAddonStateDeferredTask running"
[task 2025-08-07T19:41:06.374+00:00] 19:41:06     INFO - GECKO(1443) | console.debug: AboutNewTabResourceMapping: "_updateAddonStateDeferredTask completed"
[task 2025-08-07T19:41:06.533+00:00] 19:41:06     INFO - GECKO(1443) | MEMORY STAT vsizeMaxContiguous not supported in this build configuration.
[task 2025-08-07T19:41:06.534+00:00] 19:41:06     INFO - GECKO(1443) | MEMORY STAT | vsize 11615MB | residentFast 679MB | heapAllocated 328MB
[task 2025-08-07T19:41:06.536+00:00] 19:41:06     INFO - TEST-OK | browser/extensions/newtab/test/browser/browser_ohttpImages.js | took 1250ms

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

:thecount, since you are the author of the regressor, bug 1977619, could you take a look?

For more information, please visit BugBot documentation.

Comment 2

[Scott [:thecount] Downe]

Attachment: Bug 1981863 - Newtab cleaning up ohttp images test

Comment 3

[Sandor Molnar[:smolnar]]

Failing on tier 1

Comment 4

[Sandor Molnar[:smolnar]]

Bug 1977619 got backed out and this bug is fixed.
@Scott, if you want to land the patch, I can reopen this bug for you.

Comment 5

[Scott [:thecount] Downe]

I ended up moving these changes into the fixes in Bug 1977619, and it seems to have both fixed this issue, and the issue that caused the backout.