Bug: Intermittent browser/base/content/test/tabs/browser_e10s_about_page_triggeringprincipal.js | leaked 2 window(s) until shutdown [url = about:blank]
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2022-04-22 10:36:42+00:00
Resolved: 2023-07-07 12:04:02+00:00

**Filed by:** mlaza [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=375428061&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/DV65Lg7nQGeXJhYvn2qdvA/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2022-04-22T09:26:17.311Z] 09:26:17     INFO - GECKO(7228) | [Parent 1528, Main Thread] WARNING: Extra shutdown CC: 'i < NORMAL_SHUTDOWN_COLLECTIONS', file /builds/worker/checkouts/gecko/xpcom/base/nsCycleCollector.cpp:3359
[task 2022-04-22T09:26:17.340Z] 09:26:17     INFO - GECKO(7228) | [Parent 1528, Main Thread] WARNING: NS_ENSURE_TRUE(InitStaticMembers()) failed: file /builds/worker/workspace/obj-build/dist/include/mozilla/Preferences.h:128
[task 2022-04-22T09:26:17.386Z] 09:26:17     INFO - GECKO(7228) | [Parent 1528, Main Thread] WARNING: NS_ENSURE_TRUE(Preferences::InitStaticMembers()) failed: file /builds/worker/checkouts/gecko/modules/libpref/Preferences.cpp:4464
[task 2022-04-22T09:26:17.447Z] 09:26:17     INFO - TEST-INFO | Main app process: exit 0
[task 2022-04-22T09:26:17.449Z] 09:26:17     INFO - TEST-INFO | Confirming we saw 997 DOCSHELL created and 997 destroyed log strings.
[task 2022-04-22T09:26:17.450Z] 09:26:17     INFO - TEST-INFO | Confirming we saw 2777 DOMWINDOW created and 2777 destroyed log strings.
[task 2022-04-22T09:26:17.450Z] 09:26:17    ERROR - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_e10s_about_page_triggeringprincipal.js | leaked 2 window(s) until shutdown [url = about:blank]
[task 2022-04-22T09:26:17.451Z] 09:26:17     INFO - TEST-INFO | browser/base/content/test/tabs/browser_e10s_about_page_triggeringprincipal.js | windows(s) leaked: [pid = 9172] [serial = 48], [pid = 9172] [serial = 49]
[task 2022-04-22T09:26:17.452Z] 09:26:17    ERROR - TEST-UNEXPECTED-FAIL | browser/base/content/test/tabs/browser_e10s_about_page_triggeringprincipal.js | leaked 1 docShell(s) until shutdown
[task 2022-04-22T09:26:17.452Z] 09:26:17     INFO - TEST-INFO | browser/base/content/test/tabs/browser_e10s_about_page_triggeringprincipal.js | docShell(s) leaked: [pid = 9172] [id = 20]
[task 2022-04-22T09:26:17.453Z] 09:26:17     INFO - TEST-INFO | browser/base/content/test/tabs/browser_e10s_about_page_triggeringprincipal.js | This test created 1 hidden window(s)
[task 2022-04-22T09:26:17.453Z] 09:26:17     INFO - TEST-INFO | browser/base/content/test/tabs/browser_e10s_about_page_triggeringprincipal.js | This test created 1 hidden docshell(s)
[task 2022-04-22T09:26:17.454Z] 09:26:17     INFO - TEST-INFO | browser/base/content/test/tabs/browser_accessibility_indicator.js | This test created 1 hidden window(s)
[task 2022-04-22T09:26:17.454Z] 09:26:17     INFO - TEST-INFO | browser/base/content/test/tabs/browser_accessibility_indicator.js | This test created 1 hidden docshell(s)
[task 2022-04-22T09:26:17.455Z] 09:26:17     INFO - TEST-INFO | browser/base/content/test/tabs/browser_addAdjacentNewTab.js | This test created 1 hidden window(s)
[task 2022-04-22T09:26:17.455Z] 09:26:17     INFO - TEST-INFO | browser/base/content/test/tabs/browser_addAdjacentNewTab.js | This test created 1 hidden docshell(s)
[task 2022-04-22T09:26:17.456Z] 09:26:17     INFO - TEST-INFO | browser/base/content/test/tabs/browser_adoptTab_failure.js | This test created 1 hidden window(s)
```