Bug: Intermittent [TV] toolkit/components/messaging-system/test/browser/browser_remotesettingsexperimentloader_init.js | Uncaught exception - undefined - timed out after 50 tries.
Status: RESOLVED
Priority: --
Resolution: DUPLICATE
Created: 2021-02-18 01:46:16+00:00
Resolved: 2021-02-22 06:25:32+00:00

**Filed by:** cbrindusan [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=330303360&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/GPEOqWTCSuGbP4ft8fauAQ/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://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/GPEOqWTCSuGbP4ft8fauAQ/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---
```
[task 2021-02-17T22:10:10.465Z] 22:10:10     INFO - TEST-START | toolkit/components/messaging-system/test/browser/browser_remotesettingsexperimentloader_init.js
[task 2021-02-17T22:10:10.465Z] 22:10:10     INFO - GECKO(1447) | Chrome file doesn't exist: /Users/cltbld/tasks/task_1613599485/build/tests/mochitest/browser/toolkit/components/messaging-system/test/browser/head.js
[task 2021-02-17T22:10:10.686Z] 22:10:10     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:10.686Z] 22:10:10     INFO - GECKO(1447) |   Registered update timer
[task 2021-02-17T22:10:10.686Z] 22:10:10     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:10.686Z] 22:10:10     INFO - GECKO(1447) |   Updating recipes
[task 2021-02-17T22:10:11.540Z] 22:10:11     INFO - GECKO(1447) | [Parent 1447: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x1212f2800 == 6 [pid = 1447] [id = 5] [url = about:blank]
[task 2021-02-17T22:10:11.540Z] 22:10:11     INFO - GECKO(1447) | [Parent 1447: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x1176b9c00 == 5 [pid = 1447] [id = 4] [url = about:blank]
[task 2021-02-17T22:10:11.682Z] 22:10:11     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:11.682Z] 22:10:11     INFO - GECKO(1447) |   Updating recipes
[task 2021-02-17T22:10:11.866Z] 22:10:11     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:11.866Z] 22:10:11     INFO - GECKO(1447) |   Got 2 recipes from Remote Settings
[task 2021-02-17T22:10:11.866Z] 22:10:11     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:11.866Z] 22:10:11     INFO - GECKO(1447) |   No targeting for recipe, so it matches automatically
[task 2021-02-17T22:10:11.866Z] 22:10:11     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:11.867Z] 22:10:11     INFO - GECKO(1447) |   30ce51fe-04a4-cc4e-88ce-a0943163fc77 matched
[task 2021-02-17T22:10:11.931Z] 22:10:11     INFO - GECKO(1447) | console.debug: ExperimentManager:
[task 2021-02-17T22:10:11.931Z] 22:10:11     INFO - GECKO(1447) |   New experiment started: foo1613599811215, control
[task 2021-02-17T22:10:11.931Z] 22:10:11     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:11.931Z] 22:10:11     INFO - GECKO(1447) |   No targeting for recipe, so it matches automatically
[task 2021-02-17T22:10:11.931Z] 22:10:11     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:11.931Z] 22:10:11     INFO - GECKO(1447) |   ae05c3c7-17a3-4e45-8f06-7ecbe938f738 matched
[task 2021-02-17T22:10:11.931Z] 22:10:11     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:11.931Z] 22:10:11     INFO - GECKO(1447) |   2 recipes matched. Finalizing ExperimentManager.
[task 2021-02-17T22:10:11.931Z] 22:10:11     INFO - GECKO(1447) | console.debug: ExperimentManager:
[task 2021-02-17T22:10:11.931Z] 22:10:11     INFO - GECKO(1447) |   Experiment unenrolled: foo1613599811215
[task 2021-02-17T22:10:12.010Z] 22:10:12     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:12.010Z] 22:10:12     INFO - GECKO(1447) |   Got 2 recipes from Remote Settings
[task 2021-02-17T22:10:12.010Z] 22:10:12     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:12.010Z] 22:10:12     INFO - GECKO(1447) |   No targeting for recipe, so it matches automatically
[task 2021-02-17T22:10:12.010Z] 22:10:12     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:12.010Z] 22:10:12     INFO - GECKO(1447) |   30ce51fe-04a4-cc4e-88ce-a0943163fc77 matched
[task 2021-02-17T22:10:12.034Z] 22:10:12     INFO - GECKO(1447) | console.debug: ExperimentManager:
[task 2021-02-17T22:10:12.034Z] 22:10:12     INFO - GECKO(1447) |   New experiment started: foo1613599811215, control
[task 2021-02-17T22:10:12.034Z] 22:10:12     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:12.034Z] 22:10:12     INFO - GECKO(1447) |   No targeting for recipe, so it matches automatically
[task 2021-02-17T22:10:12.034Z] 22:10:12     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:12.035Z] 22:10:12     INFO - GECKO(1447) |   ae05c3c7-17a3-4e45-8f06-7ecbe938f738 matched
[task 2021-02-17T22:10:12.035Z] 22:10:12     INFO - GECKO(1447) | console.debug: RSLoader:
[task 2021-02-17T22:10:12.038Z] 22:10:12     INFO - GECKO(1447) |   2 recipes matched. Finalizing ExperimentManager.
[task 2021-02-17T22:10:12.266Z] 22:10:12     INFO - GECKO(1447) | [Child 1454: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x122910800 == 1 [pid = 1454] [id = 1] [url = about:blank]
[task 2021-02-17T22:10:12.266Z] 22:10:12     INFO - GECKO(1447) | [Child 1454: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x122906800 == 0 [pid = 1454] [id = 0] [url = about:blank]
[task 2021-02-17T22:10:12.360Z] 22:10:12     INFO - GECKO(1447) | [Child 1454: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (0x12293f200) [pid = 1454] [serial = 5] [outer = 0x0] [url = about:blank]
[task 2021-02-17T22:10:12.360Z] 22:10:12     INFO - GECKO(1447) | [Child 1454: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (0x10da21e40) [pid = 1454] [serial = 1] [outer = 0x0] [url = about:blank]
[task 2021-02-17T22:10:12.898Z] 22:10:12     INFO - GECKO(1447) | [Child 1457, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8424
[task 2021-02-17T22:10:12.898Z] 22:10:12     INFO - GECKO(1447) | [Child 1457, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8424
[task 2021-02-17T22:10:12.898Z] 22:10:12     INFO - GECKO(1447) | [Child 1457, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8424
[task 2021-02-17T22:10:12.898Z] 22:10:12     INFO - GECKO(1447) | [Child 1457, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8424
[task 2021-02-17T22:10:12.898Z] 22:10:12     INFO - GECKO(1447) | [Child 1457, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8424
[task 2021-02-17T22:10:12.899Z] 22:10:12     INFO - GECKO(1447) | [Child 1457, Main Thread] WARNING: '!aContent->GetComposedDoc()', file /builds/worker/checkouts/gecko/layout/base/nsCSSFrameConstructor.cpp:8424
[task 2021-02-17T22:10:15.177Z] 22:10:15     INFO - GECKO(1447) | [Child 1457: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (0x11a710400) [pid = 1457] [serial = 2] [outer = 0x0] [url = about:blank]
[task 2021-02-17T22:10:16.702Z] 22:10:16     INFO - GECKO(1447) | [Child 1454: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (0x1229a4000) [pid = 1454] [serial = 3] [outer = 0x0] [url = about:blank]
[task 2021-02-17T22:10:16.703Z] 22:10:16     INFO - GECKO(1447) | [Child 1454: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (0x1229a3400) [pid = 1454] [serial = 4] [outer = 0x0] [url = about:blank]
[task 2021-02-17T22:10:16.703Z] 22:10:16     INFO - GECKO(1447) | [Child 1454: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (0x122911800) [pid = 1454] [serial = 6] [outer = 0x0] [url = about:blank]
[task 2021-02-17T22:10:16.864Z] 22:10:16     INFO - GECKO(1447) | [Child 1480: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 0x101f06400 == 1 [pid = 1480] [id = 0] [url = about:blank]
[task 2021-02-17T22:10:16.881Z] 22:10:16     INFO - GECKO(1447) | [Child 1480: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (0x101321c80) [pid = 1480] [serial = 1] [outer = 0x0] [url = about:blank]
[task 2021-02-17T22:10:17.005Z] 22:10:17     INFO - GECKO(1447) | [Parent 1447: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 13 (0x126953580) [pid = 1447] [serial = 10] [outer = 0x0] [url = about:blank]
[task 2021-02-17T22:10:17.005Z] 22:10:17     INFO - GECKO(1447) | [Parent 1447: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 12 (0x1269533c0) [pid = 1447] [serial = 9] [outer = 0x0] [url = about:blank]
[task 2021-02-17T22:10:20.580Z] 22:10:20     INFO - TEST-INFO | started process screencapture[task 2021-02-17T22:10:20.653Z] 22:10:20     INFO - TEST-INFO | screencapture: exit 0
[task 2021-02-17T22:10:20.653Z] 22:10:20     INFO - Buffered messages logged at 22:10:10
[task 2021-02-17T22:10:20.653Z] 22:10:20     INFO - Entering test bound setup
[task 2021-02-17T22:10:20.654Z] 22:10:20     INFO - Leaving test bound setup
[task 2021-02-17T22:10:20.654Z] 22:10:20     INFO - Entering test bound test_double_feature_enrollment
[task 2021-02-17T22:10:20.654Z] 22:10:20     INFO - Buffered messages logged at 22:10:11
[task 2021-02-17T22:10:20.654Z] 22:10:20     INFO - TEST-PASS | toolkit/components/messaging-system/test/browser/browser_remotesettingsexperimentloader_init.js | true == true - 
[task 2021-02-17T22:10:20.654Z] 22:10:20     INFO - TEST-PASS | toolkit/components/messaging-system/test/browser/browser_remotesettingsexperimentloader_init.js | true == true - 
[task 2021-02-17T22:10:20.655Z] 22:10:20     INFO - TEST-PASS | toolkit/components/messaging-system/test/browser/browser_remotesettingsexperimentloader_init.js | called - true == true - 
[task 2021-02-17T22:10:20.662Z] 22:10:20     INFO - TEST-PASS | toolkit/components/messaging-system/test/browser/browser_remotesettingsexperimentloader_init.js | It should initialize and process the recipes - true == true - 
[task 2021-02-17T22:10:20.662Z] 22:10:20     INFO - Console message: 1613599811902	Toolkit.Telemetry	WARN	TelemetryEnvironment::setExperimentActive - the experiment type was truncated.
[task 2021-02-17T22:10:20.662Z] 22:10:20     INFO - Console message: [JavaScript Error: "Unknown Collection "main/nimbus-desktop-experiments"" {file: "resource://services-settings/RemoteSettingsClient.jsm" line: 160}]
[task 2021-02-17T22:10:20.662Z] 22:10:20     INFO - UnknownCollectionError@resource://services-settings/RemoteSettingsClient.jsm:160:5
[task 2021-02-17T22:10:20.662Z] 22:10:20     INFO - sync@resource://services-settings/RemoteSettingsClient.jsm:470:13
[task 2021-02-17T22:10:20.662Z] 22:10:20     INFO - 
[task 2021-02-17T22:10:20.663Z] 22:10:20     INFO - Buffered messages logged at 22:10:12
[task 2021-02-17T22:10:20.663Z] 22:10:20     INFO - Console message: 1613599812017	Toolkit.Telemetry	WARN	TelemetryEnvironment::setExperimentActive - the experiment type was truncated.
[task 2021-02-17T22:10:20.663Z] 22:10:20     INFO - Buffered messages finished
[task 2021-02-17T22:10:20.663Z] 22:10:20     INFO - TEST-UNEXPECTED-FAIL | toolkit/components/messaging-system/test/browser/browser_remotesettingsexperimentloader_init.js | Uncaught exception - undefined - timed out after 50 tries.```