1550054 - Very frequent browser/components/sessionstore/test/browser_formdata_format.js | Test timed out - when Gecko 68 merges to Beta on 2019-05-13

Status: RESOLVED FIXED

(Firefox :: Session Restore, defect, P2)

Description

[Dorel Luca [:dluca]]

Central as beta simulation:
https://treeherder.mozilla.org/#/jobs?repo=try&resultStatus=testfailed%2Cbusted%2Cexception&revision=3597979ddc1bd3db4fae1575eecc83090459f6b5&selectedJob=245354852

Log:
https://treeherder.mozilla.org/logviewer.html#/jobs?job_id=245354852&repo=try&lineNumber=3726

Failure:
browser/components/sessionstore/test/browser_formdata_format.js | Test timed out -

Comment 1

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

[task 2019-05-08T13:59:12.654Z] 13:59:12 INFO - GECKO(3481) | IPDL protocol error: Error deserializing 'BrowsingContext'
[task 2019-05-08T13:59:12.975Z] 13:59:12 INFO - GECKO(3481) | ###!!! [Parent][RunMessage] Error: Channel error: cannot send/recv

[...]

[task 2019-05-08T13:59:58.479Z] 13:59:58 INFO - Console message: [JavaScript Error: "remote browser crashed while on about:blank
[task 2019-05-08T13:59:58.479Z] 13:59:58 INFO - " {file: "chrome://mochikit/content/mochitest-e10s-utils.js" line: 8}]
[task 2019-05-08T13:59:58.479Z] 13:59:58 INFO - e10s_init/<@chrome://mochikit/content/mochitest-e10s-utils.js:8:8

Andreas, any clue what's going wrong here? Thank you.

Comment 2

[Andreas Farre [:farre]]

Suspected that this might've been fixed already, 'try' seem to think so at last: https://treeherder.mozilla.org/#/jobs?repo=try&revision=7d8a14bf9eaa912516f597b749b3b12015bf3481&group_state=expanded&selectedJob=246125521

Tried to find out where, but I don't know if a way to run mochitests from ./mach mozregressiom.

Comment 3

[Andreas Farre [:farre]]

Nika might actually know, she's been pushing a bunch of bc lifetime fixes.

Comment 4

[Nika Layzell [:nika] (ni? for response)]

Unfortunately all BC deserialization bugs look the same right now, so I can't easily tell if this is fixed already or not :-/

:aryx, any chance you could re-run the sim to see if the issue is fixed by, for example, bug 1539959 or bug 1540839?

Comment 5

[Mike de Boer [:mikedeboer]]

I'm quite uncertain if I can be of assistance here without more info... please flag me again when there is!

Comment 6

[Mike de Boer [:mikedeboer]]

I think Nika meant to n-i you in comment 4, Sebastian.

Comment 7

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

Issue doesn't reproduce anymore with yesterday's beta simulation: https://treeherder.mozilla.org/#/jobs?repo=try&resultStatus=pending%2Crunning%2Csuccess%2Ctestfailed%2Cbusted%2Cexception%2Crunnable&revision=8b1bfa1389a764b7bbfd9538b0cd2e0301db5c16&searchStr=linux%2Cshippable%2Cbrowser-chrome&selectedJob=247297979

Could be fixed by bug 1540839 because bug 1539959 landed before this issue got reported.