Filed by: malexandru [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer.html#?job_id=244807831&repo=mozilla-inbound
Full log: https://queue.taskcluster.net/v1/task/KJPh5DpOQ6C5ZSGUksZX-w/runs/0/artifacts/public/logs/live_backing.log

[task 2019-05-06T08:43:39.406Z] 08:43:39 INFO - TEST-START | toolkit/components/search/tests/xpcshell/searchconfigs/test_bing.js
[task 2019-05-06T08:53:39.407Z] 08:53:39 WARNING - TEST-UNEXPECTED-TIMEOUT | toolkit/components/search/tests/xpcshell/searchconfigs/test_bing.js | Test timed out
[task 2019-05-06T08:53:39.409Z] 08:53:39 INFO - TEST-INFO took 600001ms
[task 2019-05-06T08:53:39.410Z] 08:53:39 INFO - >>>>>>>
[task 2019-05-06T08:53:39.411Z] 08:53:39 INFO - (xpcshell/head.js) | test MAIN run_test pending (1)
[task 2019-05-06T08:53:39.412Z] 08:53:39 INFO - (xpcshell/head.js) | test run_next_test 0 pending (2)
[task 2019-05-06T08:53:39.413Z] 08:53:39 INFO - (xpcshell/head.js) | test MAIN run_test finished (2)
[task 2019-05-06T08:53:39.413Z] 08:53:39 INFO - running event loop
[task 2019-05-06T08:53:39.414Z] 08:53:39 INFO - toolkit/components/search/tests/xpcshell/searchconfigs/test_bing.js | Starting setup
[task 2019-05-06T08:53:39.415Z] 08:53:39 INFO - (xpcshell/head.js) | test setup pending (2)
[task 2019-05-06T08:53:39.415Z] 08:53:39 INFO - PID 13009 | 1557132219650 addons.manager DEBUG Application has been upgraded
[task 2019-05-06T08:53:39.417Z] 08:53:39 INFO - PID 13009 | 1557132219651 addons.manager DEBUG Loaded provider scope for resource://gre/modules/addons/XPIProvider.jsm: ["XPIProvider", "XPIInternal"]
[task 2019-05-06T08:53:39.418Z] 08:53:39 INFO - PID 13009 | 1557132219656 addons.manager DEBUG Loaded provider scope for resource://gre/modules/addons/GMPProvider.jsm
[task 2019-05-06T08:53:39.419Z] 08:53:39 INFO - PID 13009 | 1557132219658 addons.manager DEBUG Loaded provider scope for resource://gre/modules/addons/PluginProvider.jsm
[task 2019-05-06T08:53:39.420Z] 08:53:39 INFO - PID 13009 | 1557132219659 addons.manager DEBUG Starting provider: XPIProvider
[task 2019-05-06T08:53:39.421Z] 08:53:39 INFO - PID 13009 | 1557132219671 addons.xpi DEBUG hotfix for addon signing cert has not been applied; applying
[task 2019-05-06T08:53:39.421Z] 08:53:39 INFO - PID 13009 | 1557132220075 addons.xpi DEBUG new intermediate certificate added
[task 2019-05-06T08:53:39.423Z] 08:53:39 INFO - PID 13009 | 1557132220075 addons.xpi DEBUG startup
[task 2019-05-06T08:53:39.423Z] 08:53:39 INFO - PID 13009 | 1557132220075 addons.xpi WARN List of valid built-in add-ons could not be parsed.: [Exception... "Component returned failure code: 0xc1f30001 (NS_ERROR_NOT_INITIALIZED) [nsIXPCComponents_Utils.readUTF8URI]" nsresult: "0xc1f30001 (NS_ERROR_NOT_INITIALIZED)" location: "JS frame :: resource://gre/modules/addons/XPIProvider.jsm :: startup :: line 2260" data: no] Stack trace: startup()@resource://gre/modules/addons/XPIProvider.jsm:2260
[task 2019-05-06T08:53:39.424Z] 08:53:39 INFO - PID 13009 | callProvider()@resource://gre/modules/AddonManager.jsm:193
[task 2019-05-06T08:53:39.425Z] 08:53:39 INFO - PID 13009 | _startProvider()@resource://gre/modules/AddonManager.jsm:568
[task 2019-05-06T08:53:39.426Z] 08:53:39 INFO - PID 13009 | startup()@resource://gre/modules/AddonManager.jsm:723
[task 2019-05-06T08:53:39.427Z] 08:53:39 INFO - PID 13009 | startup()@resource://gre/modules/AddonManager.jsm:2722
[task 2019-05-06T08:53:39.427Z] 08:53:39 INFO - PID 13009 | observe()@resource://gre/modules/addonManager.js:65
[task 2019-05-06T08:53:39.428Z] 08:53:39 INFO - PID 13009 | promiseStartupManager()@resource://testing-common/AddonTestUtils.jsm:750
[task 2019-05-06T08:53:39.428Z] 08:53:39 INFO - PID 13009 | setup()@/builds/worker/workspace/build/tests/xpcshell/tests/toolkit/components/search/tests/xpcshell/searchconfigs/head_searchconfig.js:82
[task 2019-05-06T08:53:39.429Z] 08:53:39 INFO - PID 13009 | setup()@/builds/worker/workspace/build/tests/xpcshell/tests/toolkit/components/search/tests/xpcshell/searchconfigs/test_bing.js:14
[task 2019-05-06T08:53:39.430Z] 08:53:39 INFO - PID 13009 | run_next_test/_run_next_test/<()@/builds/worker/workspace/build/tests/xpcshell/head.js:1437
[task 2019-05-06T08:53:39.431Z] 08:53:39 INFO - PID 13009 | _run_next_test()@/builds/worker/workspace/build/tests/xpcshell/head.js:1437
[task 2019-05-06T08:53:39.431Z] 08:53:39 INFO - PID 13009 | run()@/builds/worker/workspace/build/tests/xpcshell/head.js:688
[task 2019-05-06T08:53:39.432Z] 08:53:39 INFO - PID 13009 | _do_main()@/builds/worker/workspace/build/tests/xpcshell/head.js:227
[task 2019-05-06T08:53:39.433Z] 08:53:39 INFO - PID 13009 | _execute_test()@/builds/worker/workspace/build/tests/xpcshell/head.js:529
[task 2019-05-06T08:53:39.434Z] 08:53:39 INFO - PID 13009 | -e:1
[task 2019-05-06T08:53:39.435Z] 08:53:39 INFO - PID 13009 | 1557132220079 addons.xpi INFO SystemAddonLocation directory is missing
[task 2019-05-06T08:53:39.435Z] 08:53:39 INFO - PID 13009 | 1557132220079 addons.xpi INFO Removing all system add-on upgrades.
[task 2019-05-06T08:53:39.436Z] 08:53:39 INFO - PID 13009 | 1557132220080 addons.xpi DEBUG checkForChanges
[task 2019-05-06T08:53:39.437Z] 08:53:39 INFO - PID 13009 | 1557132220080 addons.xpi DEBUG Loaded add-on state: ${}
[task 2019-05-06T08:53:39.437Z] 08:53:39 INFO - PID 13009 | 1557132220081 addons.xpi DEBUG scanForChanges changed: false, state: {}
[task 2019-05-06T08:53:39.438Z] 08:53:39 INFO - PID 13009 | 1557132220082 addons.xpi DEBUG Empty XPI database, setting schema version preference to 30
[task 2019-05-06T08:53:39.439Z] 08:53:39 INFO - PID 13009 | 1557132220082 addons.xpi DEBUG No changes found
[task 2019-05-06T08:53:39.440Z] 08:53:39 INFO - PID 13009 | 1557132220093 addons.xpi-utils DEBUG Error: Synchronously loading the add-ons database(resource://gre/modules/addons/XPIDatabase.jsm:1357:15) JS Stack trace: syncLoadDB@XPIDatabase.jsm:1357:15
[task 2019-05-06T08:53:39.441Z] 08:53:39 INFO - PID 13009 | startup@XPIProvider.jsm:2306:23
[task 2019-05-06T08:53:39.441Z] 08:53:39 INFO - PID 13009 | callProvider@AddonManager.jsm:193:31
[task 2019-05-06T08:53:39.442Z] 08:53:39 INFO - PID 13009 | _startProvider@AddonManager.jsm:568:5
[task 2019-05-06T08:53:39.443Z] 08:53:39 INFO - PID 13009 | startup@AddonManager.jsm:723:14
[task 2019-05-06T08:53:39.444Z] 08:53:39 INFO - PID 13009 | startup@AddonManager.jsm:2722:26
[task 2019-05-06T08:53:39.445Z] 08:53:39 INFO - PID 13009 | observe@addonManager.js:65:29
[task 2019-05-06T08:53:39.446Z] 08:53:39 INFO - PID 13009 | promiseStartupManager@AddonTestUtils.jsm:750:34
[task 2019-05-06T08:53:39.447Z] 08:53:39 INFO - PID 13009 | setup@head_searchconfig.js:82:26
[task 2019-05-06T08:53:39.448Z] 08:53:39 INFO - PID 13009 | setup@test_bing.js:14:14

Consolidating into bug 1547739