Bug: Intermittent toolkit/components/nimbus/test/unit/test_prefFlips.js | single tracking bug
Status: NEW
Priority: P5
Created: 2024-07-16 03:24:26+00:00
Resolved: 2025-02-17 07:08:44+00:00

**Filed by:** nfay [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=466469415&repo=mozilla-central
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/XdPOb9DdR9K3I113heO6lg/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2024-07-16T03:08:24.442Z] 03:08:24     INFO -  TEST-START | toolkit/components/nimbus/test/unit/test_prefFlips.js
[task 2024-07-16T03:08:26.450Z] 03:08:26  WARNING -  TEST-UNEXPECTED-FAIL | toolkit/components/nimbus/test/unit/test_prefFlips.js | xpcshell return code: 0
[task 2024-07-16T03:08:26.457Z] 03:08:26     INFO -  TEST-INFO took 2009ms
[task 2024-07-16T03:08:26.457Z] 03:08:26     INFO -  >>>>>>>
[task 2024-07-16T03:08:26.457Z] 03:08:26     INFO -  (xpcshell/head.js) | test MAIN run_test pending (1)
[task 2024-07-16T03:08:26.458Z] 03:08:26     INFO -  (xpcshell/head.js) | test run_next_test 0 pending (2)
[task 2024-07-16T03:08:26.458Z] 03:08:26     INFO -  (xpcshell/head.js) | test MAIN run_test finished (2)
[task 2024-07-16T03:08:26.458Z] 03:08:26     INFO -  running event loop
[task 2024-07-16T03:08:26.458Z] 03:08:26     INFO -  toolkit/components/nimbus/test/unit/test_prefFlips.js | Starting setup setup
[task 2024-07-16T03:08:26.459Z] 03:08:26     INFO -  (xpcshell/head.js) | test setup pending (2)
[task 2024-07-16T03:08:26.459Z] 03:08:26     INFO -  TEST-PASS | toolkit/components/nimbus/test/unit/test_prefFlips.js | setup - [setup : 44] Sanity check the temporary file doesn't exist. - true == true
[task 2024-07-16T03:08:26.459Z] 03:08:26     INFO -  (xpcshell/head.js) | test run_next_test 0 finished (2)
[task 2024-07-16T03:08:26.460Z] 03:08:26     INFO -  (xpcshell/head.js) | test run_next_test 1 pending (2)
[task 2024-07-16T03:08:26.460Z] 03:08:26     INFO -  (xpcshell/head.js) | test setup finished (2)
[task 2024-07-16T03:08:26.460Z] 03:08:26     INFO -  toolkit/components/nimbus/test/unit/test_prefFlips.js | Starting test_schema
[task 2024-07-16T03:08:26.460Z] 03:08:26     INFO -  (xpcshell/head.js) | test test_schema pending (2)
[task 2024-07-16T03:08:26.461Z] 03:08:26     INFO -  (xpcshell/head.js) | test run_next_test 1 finished (2)
[task 2024-07-16T03:08:26.461Z] 03:08:26     INFO -  TEST-PASS | toolkit/components/nimbus/test/unit/test_prefFlips.js | test_schema - [test_schema : 201] validated: [] - true == true
[task 2024-07-16T03:08:26.461Z] 03:08:26     INFO -  TEST-PASS | toolkit/components/nimbus/test/unit/test_prefFlips.js | test_schema - [test_schema : 201] validated: [] - true == true
[task 2024-07-16T03:08:26.462Z] 03:08:26     INFO -  TEST-PASS | toolkit/components/nimbus/test/unit/test_prefFlips.js | test_schema - [test_schema : 255] true == true
<...>
[task 2024-07-16T03:08:27.423Z] 03:08:27     INFO -  TEST-PASS | toolkit/components/nimbus/test/unit/test_prefFlips.js | test_prefFlip_setPref_restore - [test_prefFlip_setPref_restore : 72] There should be no active pref observers on ExperimentManager - 0 == 0
[task 2024-07-16T03:08:27.424Z] 03:08:27     INFO -  TEST-PASS | toolkit/components/nimbus/test/unit/test_prefFlips.js | test_prefFlip_setPref_restore - [test_prefFlip_setPref_restore : 77] There should be no prefFlips feature observers - 0 == 0
[task 2024-07-16T03:08:27.424Z] 03:08:27     INFO -  "Cleaning up prefs..."
[task 2024-07-16T03:08:27.424Z] 03:08:27     INFO -  (xpcshell/head.js) | test run_next_test 5 pending (2)
[task 2024-07-16T03:08:27.424Z] 03:08:27     INFO -  (xpcshell/head.js) | test test_prefFlip_setPref_restore finished (2)
[task 2024-07-16T03:08:27.424Z] 03:08:27     INFO -  toolkit/components/nimbus/test/unit/test_prefFlips.js | Starting test_prefFlips_cacheOriginalValues
[task 2024-07-16T03:08:27.424Z] 03:08:27     INFO -  (xpcshell/head.js) | test test_prefFlips_cacheOriginalValues pending (2)
[task 2024-07-16T03:08:27.424Z] 03:08:27     INFO -  (xpcshell/head.js) | test run_next_test 5 finished (2)
[task 2024-07-16T03:08:27.425Z] 03:08:27     INFO -  TEST-PASS | toolkit/components/nimbus/test/unit/test_prefFlips.js | test_prefFlips_cacheOriginalValues - [test_prefFlips_cacheOriginalValues : 2098] {"originalValues":{"test.pref.please.ignore":null}} deepEqual {"originalValues":{"test.pref.please.ignore":null}}
[task 2024-07-16T03:08:27.426Z] 03:08:27  WARNING -  TEST-UNEXPECTED-FAIL | toolkit/components/nimbus/test/unit/test_prefFlips.js | test_prefFlips_cacheOriginalValues - [test_prefFlips_cacheOriginalValues : 2109] enrollment present in serialized store - false == true
[task 2024-07-16T03:08:27.426Z] 03:08:27     INFO -  D:/task_172109790251315/build/tests/xpcshell/tests/toolkit/components/nimbus/test/unit/test_prefFlips.js:test_prefFlips_cacheOriginalValues:2109
[task 2024-07-16T03:08:27.426Z] 03:08:27     INFO -  exiting test
[task 2024-07-16T03:08:27.426Z] 03:08:27     INFO -  Unexpected exception NS_ERROR_ABORT:
[task 2024-07-16T03:08:27.426Z] 03:08:27     INFO -  _abort_failed_test@D:\task_172109790251315\build\tests\xpcshell\head.js:869:20
[task 2024-07-16T03:08:27.427Z] 03:08:27     INFO -  do_report_result@D:\task_172109790251315\build\tests\xpcshell\head.js:981:5
[task 2024-07-16T03:08:27.427Z] 03:08:27     INFO -  Assert<@D:\task_172109790251315\build\tests\xpcshell\head.js:70:21
[task 2024-07-16T03:08:27.427Z] 03:08:27     INFO -  Assert.prototype.report@resource://testing-common/Assert.sys.mjs:251:10
[task 2024-07-16T03:08:27.427Z] 03:08:27     INFO -  Assert.prototype.ok@resource://testing-common/Assert.sys.mjs:277:10
[task 2024-07-16T03:08:27.428Z] 03:08:27     INFO -  test_prefFlips_cacheOriginalValues@D:/task_172109790251315/build/tests/xpcshell/tests/toolkit/components/nimbus/test/unit/test_prefFlips.js:2109:10
[task 2024-07-16T03:08:27.428Z] 03:08:27     INFO -  async*_run_next_test/<@D:\task_172109790251315\build\tests\xpcshell\head.js:1759:22
[task 2024-07-16T03:08:27.428Z] 03:08:27     INFO -  _run_next_test@D:\task_172109790251315\build\tests\xpcshell\head.js:1759:38
[task 2024-07-16T03:08:27.428Z] 03:08:27     INFO -  run@D:\task_172109790251315\build\tests\xpcshell\head.js:808:9
[task 2024-07-16T03:08:27.428Z] 03:08:27     INFO -  _do_main@D:\task_172109790251315\build\tests\xpcshell\head.js:245:6
[task 2024-07-16T03:08:27.428Z] 03:08:27     INFO -  _execute_test@D:\task_172109790251315\build\tests\xpcshell\head.js:596:5
[task 2024-07-16T03:08:27.429Z] 03:08:27     INFO -  @-e:1:1
[task 2024-07-16T03:08:27.429Z] 03:08:27     INFO -  exiting test
[task 2024-07-16T03:08:27.429Z] 03:08:27     INFO -  <<<<<<<
[task 2024-07-16T03:08:27.433Z] 03:08:27     INFO -  TEST-START | toolkit/components/telemetry/tests/unit/test_TelemetryEnvironment.js
```