Bug: Intermittent browser/base/content/test/tabs/browser_e10s_switchbrowser.js | leaked 2 window(s) until shutdown [url = about:blank]
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2022-02-04 11:30:51+00:00
Resolved: 2023-06-14 12:00:57+00:00

**Filed by:** abutkovits [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=366694036&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/BNFqE1fHQ-OSvYfo1ZOdAQ/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2022-02-04T10:10:19.128Z] 10:10:19     INFO - GECKO(10096) | [Child 7148, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.129Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384: Main Thread]: I/DocShellAndDOMWindowLeak --DOCSHELL 15ee1716000 == 0 [pid = 2384] [id = 4] [url = resource://gre-resources/hiddenWindow.html]
[task 2022-02-04T10:10:19.129Z] 10:10:19     INFO - GECKO(10096) | [Child 7776, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.130Z] 10:10:19     INFO - GECKO(10096) | [Child 7776, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_StartedGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.131Z] 10:10:19     INFO - GECKO(10096) | [Child 1204, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.132Z] 10:10:19     INFO - GECKO(10096) | [Child 7776, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.133Z] 10:10:19     INFO - GECKO(10096) | [Child 7148, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_StartedGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.133Z] 10:10:19     INFO - GECKO(10096) | [Child 1204, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3351
[task 2022-02-04T10:10:19.136Z] 10:10:19     INFO - GECKO(10096) | [Child 7148, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.140Z] 10:10:19     INFO - GECKO(10096) | [Child 7148, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3351
[task 2022-02-04T10:10:19.142Z] 10:10:19     INFO - GECKO(10096) | [2022-02-04T10:10:19Z WARN  audioipc2::ipccore] AudioIPC Server RPC: EventLoop drop - closing connection for Token(6) failed: Custom { kind: NotFound, error: "I/O source not registered with `Registry`" }
[task 2022-02-04T10:10:19.143Z] 10:10:19     INFO - GECKO(10096) | [Child 7148, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_StartedGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.144Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: idb: '0.000000s: starting', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.144Z] 10:10:19     INFO - GECKO(10096) | [2022-02-04T10:10:19Z WARN  audioipc2::ipccore] AudioIPC Server RPC: EventLoop drop - closing connection for Token(9) failed: Custom { kind: NotFound, error: "I/O source not registered with `Registry`" }
[task 2022-02-04T10:10:19.145Z] 10:10:19     INFO - GECKO(10096) | [Child 7776, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4448
[task 2022-02-04T10:10:19.146Z] 10:10:19     INFO - GECKO(10096) | [Child 7148, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.147Z] 10:10:19     INFO - GECKO(10096) | [Child 7148, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_StartedGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.148Z] 10:10:19     INFO - GECKO(10096) | [Child 7148, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.149Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: idb: '0.016000s: Live database entry removed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.150Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: idb: '0.016000s: gLiveDatabaseHashtable entry removed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.151Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: idb: '0.016000s: Live database entry removed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.151Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: idb: '0.016000s: gLiveDatabaseHashtable entry removed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.152Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: cache: '0.016000s: starting', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.153Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: sdb: '0.016000s: starting', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.153Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: ls: '0.016000s: starting', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.154Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: idb: '0.016000s: Live database entry removed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.155Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: idb: '0.016000s: gLiveDatabaseHashtable entry removed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.156Z] 10:10:19     INFO - GECKO(10096) | [Child 1204, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_StartedGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.156Z] 10:10:19     INFO - GECKO(10096) | [Child 1204, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.156Z] 10:10:19     INFO - GECKO(10096) | [Child 1204, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_StartedGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.157Z] 10:10:19     INFO - GECKO(10096) | [Child 6556, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_StartedGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.158Z] 10:10:19     INFO - GECKO(10096) | [Child 1204, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.160Z] 10:10:19     INFO - GECKO(10096) | [Child 7148, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4448
[task 2022-02-04T10:10:19.160Z] 10:10:19     INFO - GECKO(10096) | [Child 6556, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.161Z] 10:10:19     INFO - GECKO(10096) | [Child 6556, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_StartedGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.162Z] 10:10:19     INFO - GECKO(10096) | [Child 6556, Main Thread] WARNING: IPC message 'PIdleScheduler::Msg_DoneGC' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.163Z] 10:10:19     INFO - GECKO(10096) | [Child 1204, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4448
[task 2022-02-04T10:10:19.164Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: idb: '0.032000s: Live database entry removed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.165Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: idb: '0.032000s: Live database entry removed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.166Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: idb: '0.032000s: gLiveDatabaseHashtable entry removed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.167Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: idb: '0.032000s: completed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.167Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: cache: '0.032000s: completed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.168Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: sdb: '0.032000s: completed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.169Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPDL Background] WARNING: ls: '0.032000s: completed', file /builds/worker/checkouts/gecko/dom/quota/ActorsParent.cpp:3789
[task 2022-02-04T10:10:19.170Z] 10:10:19     INFO - GECKO(10096) | [Child 6556, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4448
[task 2022-02-04T10:10:19.179Z] 10:10:19     INFO - GECKO(10096) | [2022-02-04T10:10:19Z WARN  audioipc2::ipccore] AudioIPC Server RPC: EventLoop drop - closing connection for Token(7) failed: Custom { kind: NotFound, error: "I/O source not registered with `Registry`" }
[task 2022-02-04T10:10:19.182Z] 10:10:19     INFO - GECKO(10096) | [Child 6556, Main Thread] WARNING: XPCOM object Mutex destroyed from static ctor/dtor: file /builds/worker/checkouts/gecko/xpcom/base/nsTraceRefcnt.cpp:206
[task 2022-02-04T10:10:19.185Z] 10:10:19     INFO - GECKO(10096) | [2022-02-04T10:10:19Z WARN  audioipc2::ipccore] AudioIPC Server RPC: EventLoop drop - closing connection for Token(1) failed: Custom { kind: NotFound, error: "I/O source not registered with `Registry`" }
[task 2022-02-04T10:10:19.498Z] 10:10:19     INFO - GECKO(10096) | ###!!! [Parent][PGPUParent] Error: RunMessage(msgname=PGPU::Msg_ShutdownVR) Channel closing: too late to send/recv, messages will be lost
[task 2022-02-04T10:10:19.513Z] 10:10:19     INFO - GECKO(10096) | [GPU 7928, Main Thread] WARNING: IPC message 'PGPU::Msg_FOGData' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.514Z] 10:10:19     INFO - GECKO(10096) | [RDD 9380, Main Thread] WARNING: IPC message 'PRDD::Msg_FOGData' discarded: actor cannot send: file /builds/worker/checkouts/gecko/ipc/glue/ProtocolUtils.cpp:499
[task 2022-02-04T10:10:19.519Z] 10:10:19     INFO - GECKO(10096) | [RDD 9380, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4448
[task 2022-02-04T10:10:19.531Z] 10:10:19     INFO - GECKO(10096) | [Parent 2384, IPC I/O Parent] WARNING: file /builds/worker/checkouts/gecko/ipc/chromium/src/base/process_util_win.cc:167
[task 2022-02-04T10:10:19.537Z] 10:10:19     INFO - GECKO(10096) | Destroying context 000001D000386000 surface 000001D07D56A190 on display 000001D00031EE00
[task 2022-02-04T10:10:19.566Z] 10:10:19     INFO - GECKO(10096) | [GPU 7928, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4448
[task 2022-02-04T10:10:20.500Z] 10:10:20     INFO - GECKO(10096) | [Parent 2384: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 9 (15edac8bc00) [pid = 2384] [serial = 4] [outer = 0] [url = about:blank]
[task 2022-02-04T10:10:20.502Z] 10:10:20     INFO - GECKO(10096) | [Parent 2384: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 8 (15ed976cac0) [pid = 2384] [serial = 3] [outer = 0] [url = chrome://browser/content/browser.xhtml]
[task 2022-02-04T10:10:20.503Z] 10:10:20     INFO - GECKO(10096) | [Parent 2384: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 7 (15ee19ab3c0) [pid = 2384] [serial = 12] [outer = 0] [url = chrome://mochikit/content/browser-harness.xhtml]
[task 2022-02-04T10:10:20.503Z] 10:10:20     INFO - GECKO(10096) | [Parent 2384: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 6 (15ee472a400) [pid = 2384] [serial = 13] [outer = 0] [url = about:blank]
[task 2022-02-04T10:10:20.504Z] 10:10:20     INFO - GECKO(10096) | [Parent 2384: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 5 (15ed97ac000) [pid = 2384] [serial = 299] [outer = 0] [url = about:blank]
[task 2022-02-04T10:10:20.505Z] 10:10:20     INFO - GECKO(10096) | [Parent 2384: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 4 (15edfb91400) [pid = 2384] [serial = 6] [outer = 0] [url = chrome://extensions/content/dummy.xhtml]
[task 2022-02-04T10:10:20.505Z] 10:10:20     INFO - GECKO(10096) | [Parent 2384: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 3 (15edc7bf580) [pid = 2384] [serial = 5] [outer = 0] [url = chrome://extensions/content/dummy.xhtml]
[task 2022-02-04T10:10:20.506Z] 10:10:20     INFO - GECKO(10096) | [Parent 2384: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 2 (15ee0a0f040) [pid = 2384] [serial = 7] [outer = 0] [url = about:blank]
[task 2022-02-04T10:10:20.506Z] 10:10:20     INFO - GECKO(10096) | [Parent 2384: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 1 (15ee16e8e40) [pid = 2384] [serial = 9] [outer = 0] [url = resource://gre-resources/hiddenWindow.html]
[task 2022-02-04T10:10:20.513Z] 10:10:20     INFO - GECKO(10096) | [Parent 2384: Main Thread]: I/DocShellAndDOMWindowLeak --DOMWINDOW == 0 (15ee385e800) [pid = 2384] [serial = 11] [outer = 0] [url = resource://gre-resources/hiddenWindow.html]
[task 2022-02-04T10:10:20.526Z] 10:10:20     INFO - GECKO(10096) | [Parent 2384, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3351
[task 2022-02-04T10:10:20.615Z] 10:10:20     INFO - GECKO(10096) | [Parent 2384, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4448
[task 2022-02-04T10:10:20.676Z] 10:10:20     INFO - TEST-INFO | Main app process: exit 0
[task 2022-02-04T10:10:20.678Z] 10:10:20     INFO - TEST-INFO | Confirming we saw 847 DOCSHELL created and 847 destroyed log strings.
[task 2022-02-04T10:10:20.679Z] 10:10:20     INFO - TEST-INFO | Confirming we saw 2387 DOMWINDOW created and 2387 destroyed log strings.
[task 2022-02-04T10:10:20.679Z] 10:10:20    ERROR - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_e10s_switchbrowser.js | leaked 2 window(s) until shutdown [url = about:blank]
[task 2022-02-04T10:10:20.680Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_e10s_switchbrowser.js | windows(s) leaked: [pid = 4420] [serial = 57], [pid = 4420] [serial = 56]
[task 2022-02-04T10:10:20.680Z] 10:10:20    ERROR - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_e10s_switchbrowser.js | leaked 1 docShell(s) until shutdown
[task 2022-02-04T10:10:20.681Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_e10s_switchbrowser.js | docShell(s) leaked: [pid = 4420] [id = 22]
[task 2022-02-04T10:10:20.681Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_e10s_switchbrowser.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.682Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_e10s_switchbrowser.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.682Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_accessibility_indicator.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.683Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_accessibility_indicator.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.683Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_addAdjacentNewTab.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.684Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_addAdjacentNewTab.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.684Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_addTab_index.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.685Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_addTab_index.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.685Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_allow_process_switches_despite_related_browser.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.686Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_allow_process_switches_despite_related_browser.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.686Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_audioTabIcon.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.687Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_audioTabIcon.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.687Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_bug580956.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.687Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_bug580956.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.688Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_bug_1387976_restore_lazy_tab_browser_muted_state.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.688Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_bug_1387976_restore_lazy_tab_browser_muted_state.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.689Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_close_during_beforeunload.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.689Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_close_during_beforeunload.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.690Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_close_tab_by_dblclick.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.690Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_close_tab_by_dblclick.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.690Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_contextmenu_openlink_after_tabnavigated.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.691Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_contextmenu_openlink_after_tabnavigated.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.691Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_dont_process_switch_204.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.692Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_dont_process_switch_204.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.692Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_e10s_about_page_triggeringprincipal.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.693Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_e10s_about_page_triggeringprincipal.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.693Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_file_to_http_named_popup.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.693Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_file_to_http_named_popup.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.694Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_file_to_http_script_closable.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.694Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_file_to_http_script_closable.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.695Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_active_tab_selected_by_default.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.695Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_active_tab_selected_by_default.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.696Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_bookmark.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.696Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_bookmark.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.697Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_clear_selection_when_tab_switch.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.697Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_clear_selection_when_tab_switch.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.697Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_close.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.698Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_close.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.698Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_close_other_tabs.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.699Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_close_other_tabs.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.699Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_close_tabs_to_the_left.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.700Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_close_tabs_to_the_left.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.700Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_close_tabs_to_the_right.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.701Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_close_tabs_to_the_right.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.701Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_close_using_shortcuts.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.701Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_close_using_shortcuts.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.702Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_copy_through_drag_and_drop.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.702Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_copy_through_drag_and_drop.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.703Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_drag_to_bookmarks_toolbar.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.703Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_drag_to_bookmarks_toolbar.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.704Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_duplicate.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.704Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_duplicate.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.705Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_event.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.705Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_event.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.705Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_move.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.706Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_move.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.706Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_move_to_another_window_drag.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.707Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_move_to_another_window_drag.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.707Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_move_to_new_window_contextmenu.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.708Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_move_to_new_window_contextmenu.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.708Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_mute_unmute.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.708Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_mute_unmute.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.709Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_open_related.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.709Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_open_related.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.710Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_pin_unpin.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.710Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_pin_unpin.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.711Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_play.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.711Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_play.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.712Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_positional_attrs.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.712Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_positional_attrs.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.713Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_reload.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.713Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_reload.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.713Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_reopen_in_container.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.714Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_reopen_in_container.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.714Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_reorder.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.715Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_reorder.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.715Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_using_Ctrl.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.716Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_using_Ctrl.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.716Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_using_Shift.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.717Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_using_Shift.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.717Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_using_Shift_and_Ctrl.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.717Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_using_Shift_and_Ctrl.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.718Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_using_keyboard.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.718Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_using_keyboard.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.719Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_using_selectedTabs.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.719Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_multiselect_tabs_using_selectedTabs.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.720Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_navigatePinnedTab.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.720Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_navigatePinnedTab.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.720Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_navigate_home_focuses_addressbar.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.721Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_navigate_home_focuses_addressbar.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.721Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_navigate_through_urls_origin_attributes.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.722Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_navigate_through_urls_origin_attributes.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.722Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_new_file_whitelisted_http_tab.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.723Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_new_file_whitelisted_http_tab.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.723Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_new_tab_in_privilegedabout_process_pref.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.724Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_new_tab_in_privilegedabout_process_pref.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.724Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_new_tab_insert_position.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.725Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_new_tab_insert_position.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.725Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_newwindow_tabstrip_overflow.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.725Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_newwindow_tabstrip_overflow.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.726Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_open_newtab_start_observer_notification.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.726Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_open_newtab_start_observer_notification.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.727Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_opened_file_tab_navigated_to_web.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.727Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_opened_file_tab_navigated_to_web.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.728Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_origin_attrs_in_remote_type.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.728Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_origin_attrs_in_remote_type.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.729Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_origin_attrs_rel.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.729Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_origin_attrs_rel.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.729Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_overflowScroll.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.730Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_overflowScroll.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.730Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_paste_event_at_middle_click_on_link.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.731Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_paste_event_at_middle_click_on_link.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.731Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_pinnedTabs.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.732Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_pinnedTabs.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.732Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_pinnedTabs_clickOpen.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.732Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_pinnedTabs_clickOpen.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.733Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_pinnedTabs_closeByKeyboard.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.733Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_pinnedTabs_closeByKeyboard.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.734Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_positional_attributes.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.734Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_positional_attributes.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.735Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_preloadedBrowser_zoom.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.735Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_preloadedBrowser_zoom.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.736Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_privilegedmozilla_process_pref.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.736Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_privilegedmozilla_process_pref.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.736Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_progress_keyword_search_handling.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.737Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_progress_keyword_search_handling.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.737Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_reload_deleted_file.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.738Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_reload_deleted_file.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.738Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_removeTabsToTheEnd.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.739Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_removeTabsToTheEnd.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.739Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_removeTabsToTheStart.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.739Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_removeTabsToTheStart.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.740Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_removeTabs_order.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.740Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_removeTabs_order.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.741Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_removeTabs_skipPermitUnload.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.741Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_removeTabs_skipPermitUnload.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.742Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabCloseProbes.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.742Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabCloseProbes.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.743Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabContextMenu_keyboard.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.743Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabContextMenu_keyboard.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.743Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabReorder.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.744Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabReorder.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.744Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabReorder_overflow.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.745Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabReorder_overflow.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.745Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabSpinnerProbe.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.745Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabSpinnerProbe.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.746Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabSuccessors.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.746Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabSuccessors.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.747Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_a11y_description.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.747Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_a11y_description.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.748Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_label_during_reload.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.748Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_label_during_reload.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.748Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_label_picture_in_picture.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.749Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_label_picture_in_picture.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.749Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_manager_visibility.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.750Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_manager_visibility.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.750Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_move_to_new_window_reload.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.751Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_move_to_new_window_reload.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.751Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_play.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.751Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_play.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.752Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_tooltips.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.752Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tab_tooltips.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.753Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabbar_visibility.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.753Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabbar_visibility.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.754Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabswitch_updatecommands.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.754Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabswitch_updatecommands.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.755Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabswitch_window_focus.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.755Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_tabswitch_window_focus.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.755Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_viewsource_of_data_URI_in_file_process.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.756Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_viewsource_of_data_URI_in_file_process.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.756Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_visibleTabs_bookmarkAllTabs.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.757Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_visibleTabs_bookmarkAllTabs.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.757Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_visibleTabs_contextMenu.js | This test created 1 hidden window(s)
[task 2022-02-04T10:10:20.758Z] 10:10:20     INFO - TEST-INFO | browser/base/content/test/tabs/browser_visibleTabs_contextMenu.js | This test created 1 hidden docshell(s)
[task 2022-02-04T10:10:20.758Z] 10:10:20     INFO - runtests.py | Application ran for: 0:05:01.063404
```