[Gecko Bug 2065425] Don't stretch with indefinite block-size in GenerateFlexItemsForChild. - #62145

[taskcluster 2026-08-22 06:48:28.275Z] Task ID: dTIfNMYgRNiCrvecKFElrw
[taskcluster 2026-08-22 06:48:28.275Z] Worker ID: 5180674136248503689
[taskcluster 2026-08-22 06:48:28.275Z] Worker Group: us-east1-c
[taskcluster 2026-08-22 06:48:28.275Z] Worker Node Type: projects/757942385826/machineTypes/n2-standard-4
[taskcluster 2026-08-22 06:48:28.275Z] Worker Pool: proj-wpt/ci
[taskcluster 2026-08-22 06:48:28.275Z] Worker Version: 46.1.0
[taskcluster 2026-08-22 06:48:28.275Z] Public IP: 34.74.35.234
[taskcluster 2026-08-22 06:48:28.275Z] Hostname: proj-wpt-ci-agex7h-urlaj2-oiji-zog

[taskcluster 2026-08-22 06:48:29.385Z] === Task Starting ===
+ '[' '' ']'
+ '[' -d /etc/profile.d ']'
+ for i in /etc/profile.d/*.sh
+ '[' -r /etc/profile.d/01-locale-fix.sh ']'
+ . /etc/profile.d/01-locale-fix.sh
+++ /usr/bin/locale-check C.UTF-8
++ eval
+ for i in /etc/profile.d/*.sh
+ '[' -r /etc/profile.d/apps-bin-path.sh ']'
+ . /etc/profile.d/apps-bin-path.sh
++ snap_bin_path=/snap/bin
++ '[' -n /home/test/bin:/home/test/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin ']'
++ '[' -n /home/test/bin:/home/test/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin ']'
++ export PATH=/home/test/bin:/home/test/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin
++ PATH=/home/test/bin:/home/test/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin
++ '[' -z '' ']'
++ export XDG_DATA_DIRS=/usr/local/share:/usr/share
++ XDG_DATA_DIRS=/usr/local/share:/usr/share
++ snap_xdg_path=/var/lib/snapd/desktop
++ '[' -n /usr/local/share:/usr/share ']'
++ '[' -n /usr/local/share:/usr/share ']'
++ export XDG_DATA_DIRS=/usr/local/share:/usr/share:/var/lib/snapd/desktop
++ XDG_DATA_DIRS=/usr/local/share:/usr/share:/var/lib/snapd/desktop
+ for i in /etc/profile.d/*.sh
+ '[' -r /etc/profile.d/libvirt-uri.sh ']'
+ . /etc/profile.d/libvirt-uri.sh
++ LIBVIRT_DEFAULT_URI=qemu:///system
++ '[' -f /proc/xen/capabilities ']'
++ export LIBVIRT_DEFAULT_URI
+ for i in /etc/profile.d/*.sh
+ '[' -r /etc/profile.d/vte-2.91.sh ']'
+ . /etc/profile.d/vte-2.91.sh
++ '[' -n '5.1.16(1)-release' -o -n '' ']'
++ [[ hxBc == *i* ]]
++ return 0
+ unset i
+ '[' -n '5.1.16(1)-release' ']'
+ '[' -f /home/test/.bashrc ']'
+ . /home/test/.bashrc
+ '[' -d /home/test/bin ']'
+ PATH=/home/test/bin:/home/test/bin:/home/test/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin
+ '[' -d /home/test/.local/bin ']'
+ /home/test/start.sh https://github.com/web-platform-tests/wpt.git refs/pull/62145/merge
+ REMOTE=https://github.com/web-platform-tests/wpt.git
+ REF=refs/pull/62145/merge
+ cd /home/test
+ '[' -e /dev/kvm ']'
+ '[' '!' -d web-platform-tests ']'
+ mkdir web-platform-tests
+ cd web-platform-tests
+ git init
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint: 
hint: 	git config --global init.defaultBranch <name>
hint: 
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint: 
hint: 	git branch -m <name>
Initialized empty Git repository in /home/test/web-platform-tests/.git/
+ git remote add origin https://github.com/web-platform-tests/wpt.git
+ retry git fetch --quiet --depth=50 --tags origin refs/pull/62145/merge:task_head
Running git fetch --quiet --depth=50 --tags origin refs/pull/62145/merge:task_head [try 1/5]
Command succeeded
+ git checkout --quiet task_head
+ cd web-platform-tests
+ ./wpt tc-run --ref=refs/pull/62145/merge --head-rev=394b32e88b5a510e969c380973467f87b4a3c437 --merge-rev=4410a09027ce99f378335639121ba5fe96db0f8d --no-hosts -- ./wpt tc-sink-task --github-checks-text-file=/home/test/artifacts/checkrun.md QJCcY_o7QiWAxwqquh1xBA Gb36VKFkQB-IstsufyKpxw Zv-ozF6RSS-B8wCYqdhavA U1kHe2LNT224oQeHzlI-YQ XcbhEtmkQRSv2P0bZPL09g LsyLuCyqSyqm5dXaa5EZig
INFO:tools.wpt.utils:Downloading https://community-tc.services.mozilla.com/api/queue/v1/task/dTIfNMYgRNiCrvecKFElrw Try 1/5
git rev-parse task_head
git ls-remote origin refs/pull/62145/head
INFO: Merge commit changed from 4410a09027ce99f378335639121ba5fe96db0f8d to 27f5ffae58853865618ba77f48c9b74c3cb9bb02 due to base branch changes. Running task anyway.
git rev-parse task_head^@
git branch base_head 77efde7ab7202d38cb95519b03bc2ac785943c54
git branch pr_head 394b32e88b5a510e969c380973467f87b4a3c437
git fetch --quiet origin master:master
git checkout --quiet task_head
git for-each-ref refs/heads
INFO: git refs:
77efde7ab7202d38cb95519b03bc2ac785943c54 commit	refs/heads/base_head
deaaa948b1dbfb1667bfd0b07beb9a14b990ea3a commit	refs/heads/master
394b32e88b5a510e969c380973467f87b4a3c437 commit	refs/heads/pr_head
27f5ffae58853865618ba77f48c9b74c3cb9bb02 commit	refs/heads/task_head

git rev-parse HEAD
INFO: checked out commit:
27f5ffae58853865618ba77f48c9b74c3cb9bb02

./wpt tc-sink-task --github-checks-text-file=/home/test/artifacts/checkrun.md QJCcY_o7QiWAxwqquh1xBA Gb36VKFkQB-IstsufyKpxw Zv-ozF6RSS-B8wCYqdhavA U1kHe2LNT224oQeHzlI-YQ XcbhEtmkQRSv2P0bZPL09g LsyLuCyqSyqm5dXaa5EZig
INFO:tools.wpt.virtualenv:Creating new venv at '/home/test/web-platform-tests/_venv3'
ERROR:root:Task LsyLuCyqSyqm5dXaa5EZig failed with state "failed"
[taskcluster 2026-08-22 06:52:41.444Z] === Task Finished ===
[taskcluster 2026-08-22 06:52:42.061Z] Unsuccessful task run with exit code: 1 completed in 253.787 seconds