Bug: Intermittent browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | Uncaught exception - at chrome://mochitests/content/browser/browser/base/content/test/outOfProcess/head.js:75 - TypeError: can't access property "innerHTML", content.docum
Status: RESOLVED
Priority: P5
Resolution: INCOMPLETE
Created: 2021-05-05 08:28:57+00:00
Resolved: 2021-06-01 17:07:53+00:00

**Filed by:** imoraru [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=338787661&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/DpDM38VIRkiFFV3ck2gEWw/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-05-05T07:29:24.475Z] 07:29:24     INFO - TEST-START | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js
[task 2021-05-05T07:29:24.548Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:242
[task 2021-05-05T07:29:24.549Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:256
[task 2021-05-05T07:29:24.549Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:261
[task 2021-05-05T07:29:24.550Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:242
[task 2021-05-05T07:29:24.550Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:256
[task 2021-05-05T07:29:24.551Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:261
[task 2021-05-05T07:29:24.551Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:242
[task 2021-05-05T07:29:24.551Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:256
[task 2021-05-05T07:29:24.552Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:261
[task 2021-05-05T07:29:24.552Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:242
[task 2021-05-05T07:29:24.552Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:256
[task 2021-05-05T07:29:24.553Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:261
[task 2021-05-05T07:29:24.553Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:242
[task 2021-05-05T07:29:24.553Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:256
[task 2021-05-05T07:29:24.554Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:261
[task 2021-05-05T07:29:24.554Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:242
[task 2021-05-05T07:29:24.554Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:256
[task 2021-05-05T07:29:24.554Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:261
[task 2021-05-05T07:29:24.555Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:242
[task 2021-05-05T07:29:24.555Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:256
[task 2021-05-05T07:29:24.555Z] 07:29:24     INFO - GECKO(1923) | err = 3 /builds/worker/checkouts/gecko/xpcom/build/mach_override.c:261
[task 2021-05-05T07:29:24.854Z] 07:29:24     INFO - TEST-INFO | started process screencapture
[task 2021-05-05T07:29:25.089Z] 07:29:25     INFO - TEST-INFO | screencapture: exit 0
[task 2021-05-05T07:29:25.089Z] 07:29:25     INFO - Buffered messages logged at 07:29:24
[task 2021-05-05T07:29:25.090Z] 07:29:25     INFO - Entering test bound test_subframes_string
[task 2021-05-05T07:29:25.090Z] 07:29:25     INFO - Console message: [JavaScript Error: "The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol." {file: "https://example.com/browser/browser/base/content/test/outOfProcess/file_base.html" line: 0}]
[task 2021-05-05T07:29:25.091Z] 07:29:25     INFO - Console message: [JavaScript Error: "Unknown Collection "main/partitioning-exempt-urls"" {file: "resource://services-settings/RemoteSettingsClient.jsm" line: 160}]
[task 2021-05-05T07:29:25.091Z] 07:29:25     INFO - UnknownCollectionError@resource://services-settings/RemoteSettingsClient.jsm:160:5
[task 2021-05-05T07:29:25.091Z] 07:29:25     INFO - sync@resource://services-settings/RemoteSettingsClient.jsm:470:13
[task 2021-05-05T07:29:25.091Z] 07:29:25     INFO - 
[task 2021-05-05T07:29:25.091Z] 07:29:25     INFO - Console message: [JavaScript Warning: "The character encoding of a framed document was not declared. The document may appear different if viewed without the document framing it." {file: "https://test1.example.org/browser/browser/base/content/test/outOfProcess/file_innerframe.html" line: 0}]
[task 2021-05-05T07:29:25.091Z] 07:29:25     INFO - Buffered messages finished
[task 2021-05-05T07:29:25.092Z] 07:29:25     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | Uncaught exception - at chrome://mochitests/content/browser/browser/base/content/test/outOfProcess/head.js:75 - TypeError: can't access property "innerHTML", content.document.getElementById(...) is null
[task 2021-05-05T07:29:25.092Z] 07:29:25     INFO - Stack trace:
[task 2021-05-05T07:29:25.092Z] 07:29:25     INFO - @chrome://mochitests/content/browser/browser/base/content/test/outOfProcess/head.js:75:1
[task 2021-05-05T07:29:25.092Z] 07:29:25     INFO - execute@resource://specialpowers/SpecialPowersSandbox.jsm:141:12
[task 2021-05-05T07:29:25.092Z] 07:29:25     INFO - _spawnTask@resource://specialpowers/SpecialPowersChild.jsm:1604:15
[task 2021-05-05T07:29:25.092Z] 07:29:25     INFO - receiveMessage@resource://specialpowers/SpecialPowersChild.jsm:310:21
[task 2021-05-05T07:29:25.092Z] 07:29:25     INFO - Leaving test bound test_subframes_string
[task 2021-05-05T07:29:25.092Z] 07:29:25     INFO - Entering test bound test_subframes_function
[task 2021-05-05T07:29:25.093Z] 07:29:25     INFO - Console message: [JavaScript Error: "The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol." {file: "https://example.com/browser/browser/base/content/test/outOfProcess/file_base.html" line: 0}]
[task 2021-05-05T07:29:25.093Z] 07:29:25     INFO - Console message: [JavaScript Warning: "The character encoding of a framed document was not declared. The document may appear different if viewed without the document framing it." {file: "https://test1.example.org/browser/browser/base/content/test/outOfProcess/file_innerframe.html" line: 0}]
[task 2021-05-05T07:29:25.094Z] 07:29:25     INFO - Console message: [JavaScript Warning: "The character encoding of a framed document was not declared. The document may appear different if viewed without the document framing it." {file: "https://www.mozilla.org/browser/browser/base/content/test/outOfProcess/file_innerframe.html" line: 0}]
[task 2021-05-05T07:29:25.205Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | insert HTML function called the correct number of times - 
[task 2021-05-05T07:29:25.205Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | correct number of browsing contexts - 
[task 2021-05-05T07:29:25.209Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function base color - "white" == "white" - 
[task 2021-05-05T07:29:25.209Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function base text - "<p>Text 1</p>" == "<p>Text 1</p>" - 
[task 2021-05-05T07:29:25.210Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 1 color - "white" == "white" - 
[task 2021-05-05T07:29:25.210Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 1 text - "<p>Text 2</p>" == "<p>Text 2</p>" - 
[task 2021-05-05T07:29:25.211Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 1-1 color - "white" == "white" - 
[task 2021-05-05T07:29:25.212Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 1-1 text - "<p>Text 3</p>" == "<p>Text 3</p>" - 
[task 2021-05-05T07:29:25.213Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 2 color - "white" == "white" - 
[task 2021-05-05T07:29:25.213Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 2 text - "<p>Text 4</p>" == "<p>Text 4</p>" - 
[task 2021-05-05T07:29:25.214Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 2-1 color - "white" == "white" - 
[task 2021-05-05T07:29:25.214Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 2-1 text - "<p>Text 5</p>" == "<p>Text 5</p>" - 
[task 2021-05-05T07:29:25.215Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 2-2 color - "white" == "white" - 
[task 2021-05-05T07:29:25.215Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 2-2 text - "<p>Text 6</p>" == "<p>Text 6</p>" - 
[task 2021-05-05T07:29:25.216Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 2-3 color - "white" == "white" - 
[task 2021-05-05T07:29:25.217Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 2-3 text - "<p>Text 7</p>" == "<p>Text 7</p>" - 
[task 2021-05-05T07:29:25.217Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 2-4 color - "white" == "white" - 
[task 2021-05-05T07:29:25.218Z] 07:29:25     INFO - TEST-PASS | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | function frame 2-4 text - "<p>Text 8</p>" == "<p>Text 8</p>" - 
[task 2021-05-05T07:29:25.225Z] 07:29:25     INFO - Leaving test bound test_subframes_function
[task 2021-05-05T07:29:25.237Z] 07:29:25     INFO - GECKO(1923) | MEMORY STAT vsizeMaxContiguous not supported in this build configuration.
[task 2021-05-05T07:29:25.237Z] 07:29:25     INFO - GECKO(1923) | MEMORY STAT | vsize 11427MB | residentFast 1189MB | heapAllocated 113MB
[task 2021-05-05T07:29:25.238Z] 07:29:25     INFO - TEST-OK | browser/base/content/test/outOfProcess/browser_basic_outofprocess.js | took 763ms
[task 2021-05-05T07:29:25.238Z] 07:29:25     INFO - Not taking screenshot here: see the one that was previously logged```