1590425 - Perma browser_lwt_telemetry.js | Uncaught exception - at test/browser_lwt_telemetry.js:49 - TypeError: snapshot.parent is undefined when Gecko version increases to 73 on 2019-12-02

Status: RESOLVED DUPLICATE of bug 1590405

(Toolkit :: Add-ons Manager, defect)

Description

[Raul Gurzau (:RaulG)]

[Tracking Requested - why for this release]:

Version Increase simulation: https://treeherder.mozilla.org/#/jobs?repo=try&selectedJob=272366471&resultStatus=testfailed%2Cbusted%2Cexception&revision=de9c063a11c4dff69eadce48a38205c01441aa3a

Log link: https://treeherder.mozilla.org/logviewer.html#/jobs?job_id=272366471&repo=try&lineNumber=4041

Log snippet:

[task 2019-10-22T12:00:04.815Z] 12:00:04 INFO - TEST-START | browser/components/customizableui/test/browser_lwt_telemetry.js
[task 2019-10-22T12:00:04.971Z] 12:00:04 INFO - TEST-INFO | started process screentopng
[task 2019-10-22T12:00:05.342Z] 12:00:05 INFO - TEST-INFO | screentopng: exit 0
[task 2019-10-22T12:00:05.342Z] 12:00:05 INFO - Buffered messages logged at 12:00:04
[task 2019-10-22T12:00:05.343Z] 12:00:05 INFO - Entering test bound clearTelemetry
[task 2019-10-22T12:00:05.344Z] 12:00:05 INFO - Leaving test bound clearTelemetry
[task 2019-10-22T12:00:05.345Z] 12:00:05 INFO - Entering test bound testCustomize
[task 2019-10-22T12:00:05.346Z] 12:00:05 INFO - TEST-PASS | browser/components/customizableui/test/browser_lwt_telemetry.js | Manage opened about:addons -
[task 2019-10-22T12:00:05.347Z] 12:00:05 INFO - TEST-PASS | browser/components/customizableui/test/browser_lwt_telemetry.js | Get more opened AMO -
[task 2019-10-22T12:00:05.347Z] 12:00:05 INFO - Buffered messages finished
[task 2019-10-22T12:00:05.348Z] 12:00:05 INFO - TEST-UNEXPECTED-FAIL | browser/components/customizableui/test/browser_lwt_telemetry.js | Got parent telemetry events in the snapshot -
[task 2019-10-22T12:00:05.349Z] 12:00:05 INFO - Stack trace:
[task 2019-10-22T12:00:05.350Z] 12:00:05 INFO - chrome://mochikit/content/browser-test.js:test_ok:1297
[task 2019-10-22T12:00:05.350Z] 12:00:05 INFO - chrome://mochitests/content/browser/browser/components/customizableui/test/browser_lwt_telemetry.js:testCustomize:43
[task 2019-10-22T12:00:05.350Z] 12:00:05 INFO - chrome://mochikit/content/browser-test.js:Tester_execTest/<:1067
[task 2019-10-22T12:00:05.351Z] 12:00:05 INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1102
[task 2019-10-22T12:00:05.351Z] 12:00:05 INFO - chrome://mochikit/content/browser-test.js:nextTest/<:930
[task 2019-10-22T12:00:05.352Z] 12:00:05 INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/waitForFocusInner/focusedOrLoaded/<:805
[task 2019-10-22T12:00:05.352Z] 12:00:05 INFO - Not taking screenshot here: see the one that was previously logged
[task 2019-10-22T12:00:05.352Z] 12:00:05 INFO - TEST-UNEXPECTED-FAIL | browser/components/customizableui/test/browser_lwt_telemetry.js | Uncaught exception - at chrome://mochitests/content/browser/browser/components/customizableui/test/browser_lwt_telemetry.js:49 - TypeError: snapshot.parent is undefined
[task 2019-10-22T12:00:05.352Z] 12:00:05 INFO - Stack trace:
[task 2019-10-22T12:00:05.352Z] 12:00:05 INFO - testCustomize@chrome://mochitests/content/browser/browser/components/customizableui/test/browser_lwt_telemetry.js:49:23
[task 2019-10-22T12:00:05.352Z] 12:00:05 INFO - AsyncTester_execTest/<@chrome://mochikit/content/browser-test.js:1067:34
[task 2019-10-22T12:00:05.352Z] 12:00:05 INFO - asyncTester_execTest@chrome://mochikit/content/browser-test.js:1102:11
[task 2019-10-22T12:00:05.352Z] 12:00:05 INFO - nextTest/<@chrome://mochikit/content/browser-test.js:930:14
[task 2019-10-22T12:00:05.352Z] 12:00:05 INFO - SimpleTest.waitForFocus/waitForFocusInner/focusedOrLoaded/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:805:67
[task 2019-10-22T12:00:05.352Z] 12:00:05 INFO - Leaving test bound testCustomize
[task 2019-10-22T12:00:05.352Z] 12:00:05 INFO - GECKO(4734) | MEMORY STAT | vsize 3292MB | residentFast 557MB | heapAllocated 292MB
[task 2019-10-22T12:00:05.353Z] 12:00:05 INFO - TEST-OK | browser/components/customizableui/test/browser_lwt_telemetry.js | took 205ms