1369452 - Intermittent layout/style/test/test_bug397427.html | uncaught exception - TypeError: ruleList[1] is null at @http://mochi.test:8888/tests/layout/style/test/test_bug397427.html:66:3

Status: RESOLVED FIXED

(Core :: CSS Parsing and Computation, defect, P4)

Description

[Treeherder Bug Filer]

Filed by: rvandermeulen [at] mozilla.com

https://treeherder.mozilla.org/logviewer.html#?job_id=103746305&repo=mozilla-inbound

https://queue.taskcluster.net/v1/task/ELNy9MxLQz2Fu7XpPWzOuA/runs/0/artifacts/public/logs/live_backing.log

Comment 1

[Intermittent Failures Robot]

7 failures in 820 pushes (0.009 failures/push) were associated with this bug in the last 7 days.   

Repository breakdown:
* autoland: 4
* mozilla-inbound: 3

Platform breakdown:
* linux64-stylo-sequential: 4
* linux64-stylo: 3

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1369452&startday=2017-05-29&endday=2017-06-04&tree=all

Comment 2

[Intermittent Failures Robot]

23 failures in 864 pushes (0.027 failures/push) were associated with this bug in the last 7 days.   

Repository breakdown:
* autoland: 13
* mozilla-inbound: 7
* mozilla-central: 3

Platform breakdown:
* linux64-stylo: 16
* linux64-stylo-sequential: 7

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1369452&startday=2017-06-05&endday=2017-06-11&tree=all

Comment 3

[Intermittent Failures Robot]

13 failures in 814 pushes (0.016 failures/push) were associated with this bug in the last 7 days.   

Repository breakdown:
* autoland: 10
* mozilla-inbound: 3

Platform breakdown:
* linux64-stylo: 8
* linux64-stylo-sequential: 5

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1369452&startday=2017-06-12&endday=2017-06-18&tree=all

Comment 4

[Intermittent Failures Robot]

32 failures in 892 pushes (0.036 failures/push) were associated with this bug in the last 7 days.   

** This failure happened more than 30 times this week! Resolving this bug is a high priority. **

** Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled. ** 

Repository breakdown:
* autoland: 20
* mozilla-inbound: 9
* try: 3

Platform breakdown:
* linux64-stylo-sequential: 16
* linux64-stylo: 16

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1369452&startday=2017-06-19&endday=2017-06-25&tree=all

Comment 5

[Joel Maher ( :jmaher ) (UTC -8)]

this is a stylo only failure (all flavors)

here is a link to a recent log:
https://treeherder.mozilla.org/logviewer.html#?repo=mozilla-inbound&job_id=109780991&lineNumber=1962

and here is the data from the log:
[task 2017-06-25T09:15:08.047215Z] 09:15:08     INFO - TEST-START | layout/style/test/test_bug397427.html
[task 2017-06-25T09:15:08.091193Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSets cannot respond to document state changes yet (only matters for chrome documents). See bug 1290285.: file /home/worker/workspace/build/src/layout/base/PresShell.cpp, line 4297
[task 2017-06-25T09:15:08.193823Z] 09:15:08     INFO - GECKO(1157) | ++DOMWINDOW == 46 (0x7fd4cd237000) [pid = 1209] [serial = 157] [outer = 0x7fd4ce40c800]
[task 2017-06-25T09:15:08.239830Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSheets don't support <style scoped>: file /home/worker/workspace/build/src/dom/base/nsStyleLinkElement.cpp, line 303
[task 2017-06-25T09:15:08.242053Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSheets don't support <style scoped>: file /home/worker/workspace/build/src/dom/base/nsStyleLinkElement.cpp, line 303
[task 2017-06-25T09:15:08.243051Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSheets don't support <style scoped>: file /home/worker/workspace/build/src/dom/base/nsStyleLinkElement.cpp, line 303
[task 2017-06-25T09:15:08.244094Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSheets don't support <style scoped>: file /home/worker/workspace/build/src/dom/base/nsStyleLinkElement.cpp, line 303
[task 2017-06-25T09:15:08.245575Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSheets don't support <style scoped>: file /home/worker/workspace/build/src/dom/base/nsStyleLinkElement.cpp, line 303
[task 2017-06-25T09:15:08.249086Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSheets don't support <style scoped>: file /home/worker/workspace/build/src/dom/base/nsStyleLinkElement.cpp, line 303
[task 2017-06-25T09:15:08.250611Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSheets don't support <style scoped>: file /home/worker/workspace/build/src/dom/base/nsStyleLinkElement.cpp, line 303
[task 2017-06-25T09:15:08.251406Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSheets don't support <style scoped>: file /home/worker/workspace/build/src/dom/base/nsStyleLinkElement.cpp, line 303
[task 2017-06-25T09:15:08.253253Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSheets don't support <style scoped>: file /home/worker/workspace/build/src/dom/base/nsStyleLinkElement.cpp, line 303
[task 2017-06-25T09:15:08.253915Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSheets don't support <style scoped>: file /home/worker/workspace/build/src/dom/base/nsStyleLinkElement.cpp, line 303
[task 2017-06-25T09:15:08.255404Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSheets don't support <style scoped>: file /home/worker/workspace/build/src/dom/base/nsStyleLinkElement.cpp, line 303
[task 2017-06-25T09:15:08.257344Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSheets don't support <style scoped>: file /home/worker/workspace/build/src/dom/base/nsStyleLinkElement.cpp, line 303
[task 2017-06-25T09:15:08.865035Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: Web Components not supported yet: file /home/worker/workspace/build/src/dom/base/nsDocument.cpp, line 6076
[task 2017-06-25T09:15:08.866793Z] 09:15:08     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: Web Components not supported yet: file /home/worker/workspace/build/src/dom/base/nsDocument.cpp, line 6076
[task 2017-06-25T09:15:09.128675Z] 09:15:09     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: ServoStyleSets cannot respond to document state changes yet (only matters for chrome documents). See bug 1290285.: file /home/worker/workspace/build/src/layout/base/PresShell.cpp, line 4297
[task 2017-06-25T09:15:09.165481Z] 09:15:09     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: fail to get child sheet for @import rule: file /home/worker/workspace/build/src/layout/style/ServoCSSRuleList.cpp, line 235
[task 2017-06-25T09:15:09.165816Z] 09:15:09     INFO - GECKO(1157) | [Child 1209] WARNING: stylo: this @import rule was not constructed: file /home/worker/workspace/build/src/layout/style/ServoCSSRuleList.cpp, line 153
[task 2017-06-25T09:15:09.173218Z] 09:15:09     INFO - TEST-INFO | started process screentopng
[task 2017-06-25T09:15:09.715370Z] 09:15:09     INFO - TEST-INFO | screentopng: exit 0
[task 2017-06-25T09:15:09.717140Z] 09:15:09     INFO - Buffered messages logged at 09:15:09
[task 2017-06-25T09:15:09.718427Z] 09:15:09     INFO - TEST-PASS | layout/style/test/test_bug397427.html | href should be null 
[task 2017-06-25T09:15:09.720316Z] 09:15:09     INFO - TEST-PASS | layout/style/test/test_bug397427.html | should be actual null 
[task 2017-06-25T09:15:09.721774Z] 09:15:09     INFO - TEST-PASS | layout/style/test/test_bug397427.html | Redirect 1 did not work 
[task 2017-06-25T09:15:09.723032Z] 09:15:09     INFO - TEST-PASS | layout/style/test/test_bug397427.html | Redirect 1 did not get right base URI 
[task 2017-06-25T09:15:09.724109Z] 09:15:09     INFO - TEST-PASS | layout/style/test/test_bug397427.html | Redirect 2 did not work 
[task 2017-06-25T09:15:09.725299Z] 09:15:09     INFO - TEST-PASS | layout/style/test/test_bug397427.html | Redirect 2 did not get right base URI 
[task 2017-06-25T09:15:09.726527Z] 09:15:09     INFO - TEST-PASS | layout/style/test/test_bug397427.html | Redirect 3 did not work 
[task 2017-06-25T09:15:09.727757Z] 09:15:09     INFO - TEST-PASS | layout/style/test/test_bug397427.html | Redirect 3 did not get right base URI 
[task 2017-06-25T09:15:09.728794Z] 09:15:09     INFO - TEST-PASS | layout/style/test/test_bug397427.html | Unexpected href for imported sheet 
[task 2017-06-25T09:15:09.729920Z] 09:15:09     INFO - TEST-FAIL | layout/style/test/test_bug397427.html | Rule href should be absolute - got "redirect.sjs?http://example.org/tests/layout/style/test/post-redirect-1.css", expected "http://mochi.test:8888/tests/layout/style/test/redirect.sjs?http://example.org/tests/layout/style/test/post-redirect-1.css"
[task 2017-06-25T09:15:09.731063Z] 09:15:09     INFO - Buffered messages finished
[task 2017-06-25T09:15:09.732152Z] 09:15:09     INFO - TEST-UNEXPECTED-FAIL | layout/style/test/test_bug397427.html | uncaught exception - TypeError: ruleList[1] is null at @http://mochi.test:8888/tests/layout/style/test/test_bug397427.html:66:3
[task 2017-06-25T09:15:09.733069Z] 09:15:09     INFO - rval@http://mochi.test:8888/tests/SimpleTest/SimpleTest.js:146:17
[task 2017-06-25T09:15:09.733916Z] 09:15:09     INFO - EventHandlerNonNull*this.addLoadEvent@http://mochi.test:8888/tests/SimpleTest/SimpleTest.js:171:13
[task 2017-06-25T09:15:09.734805Z] 09:15:09     INFO - @http://mochi.test:8888/tests/SimpleTest/SimpleTest.js:1441:5
[task 2017-06-25T09:15:09.735622Z] 09:15:09     INFO - 
[task 2017-06-25T09:15:09.736440Z] 09:15:09     INFO -     simpletestOnerror@SimpleTest/SimpleTest.js:1652:11
[task 2017-06-25T09:15:09.737273Z] 09:15:09     INFO -     OnErrorEventHandlerNonNull*@SimpleTest/SimpleTest.js:1632:1
[task 2017-06-25T09:15:09.738295Z] 09:15:09     INFO - GECKO(1157) | JavaScript error: http://mochi.test:8888/tests/layout/style/test/test_bug397427.html, line 66: TypeError: ruleList[1] is null
[task 2017-06-25T09:15:09.739375Z] 09:15:09     INFO - GECKO(1157) | MEMORY STAT | vsize 1813MB | residentFast 136MB | heapAllocated 29MB
[task 2017-06-25T09:15:09.740390Z] 09:15:09     INFO - TEST-OK | layout/style/test/test_bug397427.html | took 1160ms


I assume this is something stylo specific, not a broken test case, :xidorn can you confirm and help resolve this?

Comment 6

[Xidorn Quan [:xidorn] UTC+11]

It doesn't seem to be an intermittent at all to me... I can reproduce this reliable locally...

Comment 7

[Joel Maher ( :jmaher ) (UTC -8)]

is this a perma fail?

Comment 8

[Xidorn Quan [:xidorn] UTC+11]

It could be intermittent because it may depend on the order of stylesheet being loaded. This is actually the same issue as bug 1368381, although we don't really have idea how to fix it right now.

Comment 9

[Intermittent Failures Robot]

10 failures in 718 pushes (0.014 failures/push) were associated with this bug in the last 7 days.   

Repository breakdown:
* autoland: 6
* mozilla-inbound: 2
* try: 1
* mozilla-central: 1

Platform breakdown:
* linux64-stylo-sequential: 6
* linux64-stylo: 4

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1369452&startday=2017-06-26&endday=2017-07-02&tree=all

Comment 10

[Xidorn Quan [:xidorn] UTC+11]

Should be fixed now.