Filed by: ctuns [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=399112529&repo=autoland
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/YfxaTAxmSOC0UCYMVd_HqA/runs/0/artifacts/public/logs/live_backing.log

[task 2022-12-09T07:49:50.818Z] 07:49:50     INFO - TEST-PASS | netwerk/test/browser/browser_103_referrer_policy.js | undefined (image): Unexpected amount of requests made - {"hinted":1,"normal":0} deepEqual {"hinted":1,"normal":0} - 
[task 2022-12-09T07:49:50.818Z] 07:49:50     INFO - Buffered messages finished
[task 2022-12-09T07:49:50.819Z] 07:49:50     INFO - TEST-UNEXPECTED-FAIL | netwerk/test/browser/browser_103_referrer_policy.js | Request referrer matches expected - image - origin on both - false == true - JS frame :: chrome://mochitests/content/browser/netwerk/test/browser/browser_103_referrer_policy.js :: test_referrer_policy :: line 51
[task 2022-12-09T07:49:50.820Z] 07:49:50     INFO - Stack trace:
[task 2022-12-09T07:49:50.821Z] 07:49:50     INFO - chrome://mochitests/content/browser/netwerk/test/browser/browser_103_referrer_policy.js:test_referrer_policy:51
[task 2022-12-09T07:49:50.821Z] 07:49:50     INFO - GECKO(3651) | [Child 5284, Main Thread] WARNING: NS_ENSURE_TRUE(InitStaticMembers()) failed: file /builds/worker/workspace/obj-build/dist/include/mozilla/Preferences.h:129
[task 2022-12-09T07:49:50.822Z] 07:49:50     INFO - Not taking screenshot here: see the one that was previously logged
[task 2022-12-09T07:49:50.828Z] 07:49:50     INFO - TEST-UNEXPECTED-FAIL | netwerk/test/browser/browser_103_referrer_policy.js | undefined (image): Unexpected amount of requests made - {"hinted":0,"normal":1} deepEqual {"hinted":1,"normal":0} - JS frame :: chrome://mochitests/content/browser/netwerk/test/browser/browser_103_referrer_policy.js :: test_referrer_policy :: line 56
[task 2022-12-09T07:49:50.829Z] 07:49:50     INFO - Stack trace:
[task 2022-12-09T07:49:50.830Z] 07:49:50     INFO - chrome://mochitests/content/browser/netwerk/test/browser/browser_103_referrer_policy.js:test_referrer_policy:56
[task 2022-12-09T07:49:50.831Z] 07:49:50     INFO - GECKO(3651) | [Child 5284, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4659
[task 2022-12-09T07:49:50.833Z] 07:49:50     INFO - GECKO(3651) | [Child 5288: Main Thread]: I/DocShellAndDOMWindowLeak ++DOCSHELL 7f791182e800 == 1 [pid = 5288] [id = 0]
[task 2022-12-09T07:49:50.836Z] 07:49:50     INFO - GECKO(3651) | [Child 5288: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 1 (7f792cf919f0) [pid = 5288] [serial = 1] [outer = 0]
[task 2022-12-09T07:49:50.838Z] 07:49:50     INFO - GECKO(3651) | [Child 5288: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 2 (7f791182f000) [pid = 5288] [serial = 2] [outer = 7f792cf919f0]
[task 2022-12-09T07:49:50.841Z] 07:49:50     INFO - GECKO(3651) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmpw9jbqp65.mozrunner/runtests_leaks_tab_pid5354.log
[task 2022-12-09T07:49:50.843Z] 07:49:50     INFO - GECKO(3651) | [5354, Main Thread] WARNING: XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.: file /builds/worker/checkouts/gecko/tools/profiler/core/platform.cpp:339
[task 2022-12-09T07:49:50.846Z] 07:49:50     INFO - GECKO(3651) | [Child 5288: Main Thread]: I/DocShellAndDOMWindowLeak ++DOMWINDOW == 3 (7f7911831c00) [pid = 5288] [serial = 3] [outer = 7f792cf919f0]
[task 2022-12-09T07:49:50.905Z] 07:49:50     INFO - GECKO(3651) | [Child 5354, Main Thread] WARNING: could not set real-time limit in CubebUtils::InitLibrary: file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp:714
[task 2022-12-09T07:49:51.024Z] 07:49:51     INFO - GECKO(3651) | [Child 5288, Main Thread] WARNING: Forced to copy ObserverTable due to nested notifications: file /builds/worker/checkouts/gecko/image/ProgressTracker.h:85
[task 2022-12-09T07:49:51.330Z] 07:49:51     INFO - GECKO(3651) | [Parent 3651, IPDL Background] WARNING: IPC Connection Error: [Parent][PBackgroundParent] RunMessage(msgname=PRemoteWorkerService::Msg___delete__) Channel closing: too late to send/recv, messages will be lost: file /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1883
[task 2022-12-09T07:49:51.341Z] 07:49:51     INFO - GECKO(3651) | [Parent 3651, Compositor] WARNING: IPC Connection Error: [Parent][PImageBridgeParent] RunMessage(msgname=PImageBridge::Msg_WillClose) Channel closing: too late to send/recv, messages will be lost: file /builds/worker/checkouts/gecko/ipc/glue/MessageChannel.cpp:1883
[task 2022-12-09T07:49:51.402Z] 07:49:51     INFO - GECKO(3651) | [Child 5288: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 7f791182e800 == 0 [pid = 5288] [id = 0] [url = https://example.com/browser/netwerk/test/browser/early_hint_referrer_policy_html.sjs?as=image&hinted=1&header_referrer_policy=no-referrer]
[task 2022-12-09T07:49:51.424Z] 07:49:51     INFO - GECKO(3651) | [Child 5288: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (7f792cf919f0) [pid = 5288] [serial = 1] [outer = 0] [url = https://example.com/browser/netwerk/test/browser/early_hint_referrer_policy_html.sjs?as=image&hinted=1&header_referrer_policy=no-referrer]
[task 2022-12-09T07:49:51.427Z] 07:49:51     INFO - GECKO(3651) | [Child 5288: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (7f7911831c00) [pid = 5288] [serial = 3] [outer = 0] [url = https://example.com/browser/netwerk/test/browser/early_hint_referrer_policy_html.sjs?as=image&hinted=1&header_referrer_policy=no-referrer]
[task 2022-12-09T07:49:51.428Z] 07:49:51     INFO - GECKO(3651) | [Child 5288: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (7f791182f000) [pid = 5288] [serial = 2] [outer = 0] [url = about:blank]
[task 2022-12-09T07:49:51.430Z] 07:49:51     INFO - GECKO(3651) | [Child 5288, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3387
[task 2022-12-09T07:49:51.432Z] 07:49:51     INFO - GECKO(3651) | [Child 5288, Main Thread] WARNING: NS_ENSURE_TRUE(InitStaticMembers()) failed: file /builds/worker/workspace/obj-build/dist/include/mozilla/Preferences.h:129
[task 2022-12-09T07:49:51.435Z] 07:49:51     INFO - GECKO(3651) | ### XPCOM_MEM_BLOAT_LOG defined -- logging bloat/leaks to /tmp/tmpw9jbqp65.mozrunner/runtests_leaks_tab_pid5379.log
[task 2022-12-09T07:49:51.436Z] 07:49:51     INFO - GECKO(3651) | [5379, Main Thread] WARNING: XPCOM_MEM_BLOAT_LOG is set, disabling native allocations.: file /builds/worker/checkouts/gecko/tools/profiler/core/platform.cpp:339
[task 2022-12-09T07:49:51.448Z] 07:49:51     INFO - GECKO(3651) | [Child 5288, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4659
[task 2022-12-09T07:49:51.479Z] 07:49:51     INFO - GECKO(3651) | [Child 5379, Main Thread] WARNING: could not set real-time limit in CubebUtils::InitLibrary: file /builds/worker/checkouts/gecko/dom/media/CubebUtils.cpp:714
[task 2022-12-09T07:49:51.488Z] 07:49:51     INFO - TEST-PASS | netwerk/test/browser/browser_103_referrer_policy.js | Request referrer matches expected - image - no-referrer on header - true == true - 

First occurrence in this backfill range and retriggers: https://treeherder.mozilla.org/jobs?repo=autoland&selectedTaskRun=YfxaTAxmSOC0UCYMVd_HqA.0&searchStr=Linux%2C18.04%2Cx64%2CWebRender%2Cdebug%2CMochitests%2Cwith%2Csoftware%2Cwebrender%2Cenabled%2Ctest-linux1804-64-qr%2Fdebug-mochitest-browser-chrome-swr%2Cbc6&group_state=expanded&tochange=ede7c4b9d0a611f924195535eeb993389c730e70&fromchange=bc5138fb7171b1694a161abbe7c1ebe3dfab7c01