1584243 - Intermittent devtools/client/inspector/rules/test/browser_rules_inactive_css_visited.js | Uncaught exception - at chrome://mochitests/content/browser/devtools/client/inspector/test/head.js:905 - TypeError: view.element.children[childrenIndex] is undefined

Status: RESOLVED FIXED

(DevTools :: Inspector: Rules, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: dluca [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer.html#?job_id=268543044&repo=mozilla-central
Full log: https://queue.taskcluster.net/v1/task/Je0DgzMGRHmprcY-X2C9MQ/runs/0/artifacts/public/logs/live_backing.log
Reftest URL: https://hg.mozilla.org/mozilla-central/raw-file/tip/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://queue.taskcluster.net/v1/task/Je0DgzMGRHmprcY-X2C9MQ/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---

TEST-START | devtools/client/inspector/rules/test/browser_rules_inactive_css_visited.js
[task 2019-09-26T11:08:08.587Z] 11:08:08     INFO - GECKO(15610) | console.log: "[DISPATCH] action type:" "CLEAR_FLEXBOX"
[task 2019-09-26T11:08:08.588Z] 11:08:08     INFO - GECKO(15610) | console.log: "[DISPATCH] action type:" "UPDATE_GRIDS"
[task 2019-09-26T11:08:08.608Z] 11:08:08     INFO - GECKO(15610) | console.log: "[DISPATCH] action type:" "UPDATE_OFFSET_PARENT"
[task 2019-09-26T11:08:08.608Z] 11:08:08     INFO - GECKO(15610) | console.log: "[DISPATCH] action type:" "UPDATE_LAYOUT"
[task 2019-09-26T11:08:08.664Z] 11:08:08     INFO - TEST-INFO | started process screentopng
[task 2019-09-26T11:08:09.049Z] 11:08:09     INFO - TEST-INFO | screentopng: exit 0
[task 2019-09-26T11:08:09.049Z] 11:08:09     INFO - Buffered messages logged at 11:08:08
[task 2019-09-26T11:08:09.050Z] 11:08:09     INFO - Entering test bound 
[task 2019-09-26T11:08:09.051Z] 11:08:09     INFO - Open a particular url to make a visited link
[task 2019-09-26T11:08:09.052Z] 11:08:09     INFO - Adding a new tab with URL: http://example.com/browser/devtools/client/inspector/rules/test/doc_variables_1.html
[task 2019-09-26T11:08:09.053Z] 11:08:09     INFO - Tab added and finished loading
[task 2019-09-26T11:08:09.053Z] 11:08:09     INFO - Loading the helper frame script chrome://mochitests/content/browser/devtools/client/inspector/rules/test/doc_frame_script.js
[task 2019-09-26T11:08:09.055Z] 11:08:09     INFO - Open tested page in the same tab
[task 2019-09-26T11:08:09.056Z] 11:08:09     INFO - Open the inspector
[task 2019-09-26T11:08:09.058Z] 11:08:09     INFO - Opening the inspector
[task 2019-09-26T11:08:09.059Z] 11:08:09     INFO - Opening the toolbox
[task 2019-09-26T11:08:09.060Z] 11:08:09     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: "http://example.com/browser/devtools/client/inspector/rules/test/doc_variables_1.html" line: 0}]
[task 2019-09-26T11:08:09.061Z] 11:08:09     INFO - Toolbox opened and focused
[task 2019-09-26T11:08:09.062Z] 11:08:09     INFO - Selecting the node for '#visited-only'
[task 2019-09-26T11:08:09.063Z] 11:08:09     INFO - Checking whether declarations are marked as used.
[task 2019-09-26T11:08:09.063Z] 11:08:09     INFO - Buffered messages finished
[task 2019-09-26T11:08:09.067Z] 11:08:09     INFO - TEST-UNEXPECTED-FAIL | devtools/client/inspector/rules/test/browser_rules_inactive_css_visited.js | Uncaught exception - at chrome://mochitests/content/browser/devtools/client/inspector/test/head.js:905 - TypeError: view.element.children[childrenIndex] is undefined
[task 2019-09-26T11:08:09.070Z] 11:08:09     INFO - Stack trace:
[task 2019-09-26T11:08:09.071Z] 11:08:09     INFO - getRuleViewRuleEditor@chrome://mochitests/content/browser/devtools/client/inspector/test/head.js:905:1
[task 2019-09-26T11:08:09.072Z] 11:08:09     INFO - getPropertiesForRuleIndex@chrome://mochitests/content/browser/devtools/client/inspector/rules/test/head.js:701:43
[task 2019-09-26T11:08:09.073Z] 11:08:09     INFO - checkDeclarationIsActive@chrome://mochitests/content/browser/devtools/client/inspector/rules/test/head.js:789:49
[task 2019-09-26T11:08:09.074Z] 11:08:09     INFO - runInactiveCSSTests@chrome://mochitests/content/browser/devtools/client/inspector/rules/test/head.js:900:35
[task 2019-09-26T11:08:09.075Z] 11:08:09     INFO - async*@chrome://mochitests/content/browser/devtools/client/inspector/rules/test/browser_rules_inactive_css_visited.js:80:9
[task 2019-09-26T11:08:09.076Z] 11:08:09     INFO - Async*Tester_execTest/<@chrome://mochikit/content/browser-test.js:1350:34
[task 2019-09-26T11:08:09.077Z] 11:08:09     INFO - Tester_execTest@chrome://mochikit/content/browser-test.js:1385:11
[task 2019-09-26T11:08:09.078Z] 11:08:09     INFO - nextTest/<@chrome://mochikit/content/browser-test.js:1207:14
[task 2019-09-26T11:08:09.079Z] 11:08:09     INFO - SimpleTest.waitForFocus/waitForFocusInner/focusedOrLoaded/<@chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:805:67
[task 2019-09-26T11:08:09.080Z] 11:08:09     INFO - Leaving test bound 
[task 2019-09-26T11:08:09.081Z] 11:08:09     INFO - Removing tab.
[task 2019-09-26T11:08:09.087Z] 11:08:09     INFO - Waiting for event: 'TabClose' on [object XULElement].
[task 2019-09-26T11:08:09.089Z] 11:08:09     INFO - Got event: 'TabClose' on [object XULElement].
[task 2019-09-26T11:08:09.090Z] 11:08:09     INFO - Tab removed and finished closing
[task 2019-09-26T11:08:09.091Z] 11:08:09     INFO - GECKO(15610) | MEMORY STAT | vsize 2898MB | residentFast 418MB | heapAllocated 172MB
[task 2019-09-26T11:08:09.092Z] 11:08:09     INFO - TEST-OK | devtools/client/inspector/rules/test/browser_rules_inactive_css_visited.js | took 1000ms
[task 2019-09-26T11:08:09.093Z] 11:08:09     INFO - checking window state

Comment 1

[Intermittent Failures Robot]

8 failures in 4530 pushes (0.002 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 5
• try: 2
• autoland: 1

Platform breakdown:

• linux64: 4
• linux64-shippable: 4

For more details, see:
https://treeherder.mozilla.org/intermittent-failures.html#/bugdetails?bug=1584243&startday=2019-09-23&endday=2019-09-29&tree=all

Comment 2

[Intermittent Failures Robot]

16 failures in 4292 pushes (0.004 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 7
• mozilla-central: 6
• try: 3

Platform breakdown:

• linux64-shippable: 11
• linux64: 5

For more details, see:
https://treeherder.mozilla.org/intermittent-failures.html#/bugdetails?bug=1584243&startday=2019-09-30&endday=2019-10-06&tree=all

Comment 3

[Intermittent Failures Robot]

21 failures in 677 pushes (0.031 failures/push) were associated with this bug yesterday.

Repository breakdown:

• try: 3
• autoland: 13
• mozilla-central: 5

Platform breakdown:

• linux64: 5
• windows10-64: 1
• linux64-devedition: 2
• linux64-shippable: 13

For more details, see:
https://treeherder.mozilla.org/intermittent-failures.html#/bugdetails?bug=1584243&startday=2019-10-07&endday=2019-10-07&tree=all

Comment 4

[Intermittent Failures Robot]

30 failures in 785 pushes (0.038 failures/push) were associated with this bug yesterday.

Repository breakdown:

• autoland: 16
• try: 10
• mozilla-central: 3
• mozilla-inbound: 1

Platform breakdown:

• linux64-shippable: 28
• linux64: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures.html#/bugdetails?bug=1584243&startday=2019-10-08&endday=2019-10-08&tree=all

Comment 5

[Intermittent Failures Robot]

36 failures in 797 pushes (0.045 failures/push) were associated with this bug yesterday.

Repository breakdown:

• autoland: 12
• try: 13
• mozilla-central: 11

Platform breakdown:

• linux64-shippable: 23
• linux64: 11
• linux64-devedition: 2

For more details, see:
https://treeherder.mozilla.org/intermittent-failures.html#/bugdetails?bug=1584243&startday=2019-10-09&endday=2019-10-09&tree=all

Comment 6

[Intermittent Failures Robot]

93 failures in 3801 pushes (0.024 failures/push) were associated with this bug in the last 7 days.

This is the #14 most frequent failure this week.

** This failure happened more than 75 times this week! Resolving this bug is a very high priority. **

** Try to resolve this bug as soon as possible. If unresolved for 1 week, the affected test(s) may be disabled. **

Repository breakdown:

• try: 28
• autoland: 42
• mozilla-central: 22
• mozilla-inbound: 1

Platform breakdown:

• linux64: 19
• windows10-64: 1
• linux64-shippable: 68
• linux64-devedition: 5

For more details, see:
https://treeherder.mozilla.org/intermittent-failures.html#/bugdetails?bug=1584243&startday=2019-10-07&endday=2019-10-13&tree=all

Comment 7

[Patrick Brosset <:pbro>]

Daisuke, any idea what could be going wrong here?

Comment 8

[Daisuke Akatsuka (:daisuke)]

Thank you very much for letting me know.
It may be similar to bug 1582886.
I'll take a look.

Comment 9

[Daisuke Akatsuka (:daisuke)]

Attachment: Bug 1584243: Wait until the link has the visited state. r?pbro!

Comment 10

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/170116a535d6
Wait until the link has the visited state. r=pbro

Comment 11

[Oana Pop-Rus]

https://hg.mozilla.org/mozilla-central/rev/170116a535d6

Comment 12

[Intermittent Failures Robot]

6 failures in 3964 pushes (0.002 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 1
• mozilla-central: 1
• try: 4

Platform breakdown:

• linux64-shippable: 1
• linux64: 5

For more details, see:
https://treeherder.mozilla.org/intermittent-failures.html#/bugdetails?bug=1584243&startday=2019-10-14&endday=2019-10-20&tree=all

Comment 13

[Intermittent Failures Robot]

1 failures in 4182 pushes (0.0 failures/push) were associated with this bug in the last 7 days.

Repository breakdown:

• try: 1

Platform breakdown:

• linux64: 1

For more details, see:
https://treeherder.mozilla.org/intermittent-failures.html#/bugdetails?bug=1584243&startday=2019-10-21&endday=2019-10-27&tree=all