2047791 - Perma [tier 2] /connection-allowlist/tentative/webtransport-dedicated-worker.https.sub.window.html | Same-origin WebTransport from a dedicated worker succeeds. - assert_true: WebTransport to web-platform.test should succeed. expected |single tracking bug

Status: RESOLVED FIXED

(Testing :: web-platform-tests, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: nfay [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=572999644&repo=mozilla-central&task=aGYjyvfHR6K9DC56U7g1OA.0
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/aGYjyvfHR6K9DC56U7g1OA/runs/0/artifacts/public/logs/live_backing.log

---

[task 2026-06-15T23:14:20.094+00:00] 23:14:20     INFO - TEST-START | /connection-allowlist/tentative/webtransport-dedicated-worker.https.sub.window.html
[task 2026-06-15T23:14:20.105+00:00] 23:14:20     INFO - Closing window 58fc18f8-525f-4810-aee5-0d4a16c66cef
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - 
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - TEST-NOTRUN | /connection-allowlist/tentative/speculation_rules_prefetch.https.sub.window.html | Prefetch to https://www1.not-web-platform.test:8443 succeeds.
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - TEST-NOTRUN | /connection-allowlist/tentative/speculation_rules_prefetch.https.sub.window.html | Prefetch to https://www2.not-web-platform.test:8443 succeeds.
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - TEST-NOTRUN | /connection-allowlist/tentative/speculation_rules_prefetch.https.sub.window.html | Prefetch to https://xn--n8j6ds53lwwkrqhv28a.not-web-platform.test:8443 succeeds.
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - TEST-NOTRUN | /connection-allowlist/tentative/speculation_rules_prefetch.https.sub.window.html | Prefetch to https://xn--lve-6lad.not-web-platform.test:8443 succeeds.
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - TEST-TIMEOUT | /connection-allowlist/tentative/speculation_rules_prerender.https.sub.window.html | Prerender to https://web-platform.test:8443 succeeds. - Test timed out
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - TEST-NOTRUN | /connection-allowlist/tentative/speculation_rules_prerender.https.sub.window.html | Prerender to https://www.web-platform.test:8443 fails.
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - TEST-NOTRUN | /connection-allowlist/tentative/speculation_rules_prerender.https.sub.window.html | Prerender to https://www1.web-platform.test:8443 succeeds.
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - TEST-NOTRUN | /connection-allowlist/tentative/speculation_rules_prerender.https.sub.window.html | Prerender to https://www2.web-platform.test:8443 fails.
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - TEST-NOTRUN | /connection-allowlist/tentative/speculation_rules_prerender.https.sub.window.html | Prerender to https://xn--n8j6ds53lwwkrqhv28a.web-platform.test:8443 fails.
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - TEST-NOTRUN | /connection-allowlist/tentative/speculation_rules_prerender.https.sub.window.html | Prerender to https://xn--lve-6lad.web-platform.test:8443 fails.
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - TEST-UNEXPECTED-FAIL | /connection-allowlist/tentative/webtransport-dedicated-worker.https.sub.window.html | Same-origin WebTransport from a dedicated worker succeeds. - assert_true: WebTransport to web-platform.test should succeed. expected true got false
[task 2026-06-15T23:14:22.050+00:00] 23:14:22     INFO - worker_webtransport_test/<@https://web-platform.test:8443/connection-allowlist/tentative/webtransport-dedicated-worker.https.sub.window.js:44:18
[task 2026-06-15T23:14:22.051+00:00] 23:14:22     INFO - TEST-INFO | expected TIMEOUT
[task 2026-06-15T23:14:22.051+00:00] 23:14:22     INFO - 
[task 2026-06-15T23:14:22.051+00:00] 23:14:22     INFO - TEST-UNEXPECTED-PASS | /connection-allowlist/tentative/webtransport-dedicated-worker.https.sub.window.html | Cross-origin same-site WebTransport (www) from a dedicated worker is blocked. - expected NOTRUN
[task 2026-06-15T23:14:22.051+00:00] 23:14:22     INFO - TEST-INFO | expected NOTRUN
[task 2026-06-15T23:14:22.052+00:00] 23:14:22     INFO - 
[task 2026-06-15T23:14:22.052+00:00] 23:14:22     INFO - TEST-UNEXPECTED-PASS | /connection-allowlist/tentative/webtransport-dedicated-worker.https.sub.window.html | Cross-origin same-site WebTransport (www1) from a dedicated worker is blocked. - expected NOTRUN
[task 2026-06-15T23:14:22.052+00:00] 23:14:22     INFO - TEST-INFO | expected NOTRUN
[task 2026-06-15T23:14:22.053+00:00] 23:14:22     INFO - 
[task 2026-06-15T23:14:22.053+00:00] 23:14:22     INFO - TEST-UNEXPECTED-PASS | /connection-allowlist/tentative/webtransport-dedicated-worker.https.sub.window.html | Cross-site WebTransport from a dedicated worker is blocked. - expected NOTRUN
[task 2026-06-15T23:14:22.053+00:00] 23:14:22     INFO - TEST-INFO | expected NOTRUN
[task 2026-06-15T23:14:22.054+00:00] 23:14:22     INFO - 
[task 2026-06-15T23:14:22.054+00:00] 23:14:22     INFO - TEST-UNEXPECTED-PASS | /connection-allowlist/tentative/webtransport-dedicated-worker.https.sub.window.html | Cross-site WebTransport (www subdomain) from a dedicated worker is blocked. - expected NOTRUN
[task 2026-06-15T23:14:22.054+00:00] 23:14:22     INFO - TEST-INFO | expected NOTRUN
[task 2026-06-15T23:14:22.138+00:00] 23:14:22     INFO - TEST-UNEXPECTED-OK | /connection-allowlist/tentative/webtransport-dedicated-worker.https.sub.window.html | expected TIMEOUT
[task 2026-06-15T23:14:22.138+00:00] 23:14:22     INFO - TEST-INFO expected TIMEOUT | took 2045ms
[task 2026-06-15T23:14:22.529+00:00] 23:14:22     INFO - Closing logging queue
[task 2026-06-15T23:14:22.530+00:00] 23:14:22     INFO - queue closed
[task 2026-06-15T23:14:22.531+00:00] 23:14:22     INFO - STDOUT: cleanup aborted: args: /builds/worker/fetches/android-sdk-linux/platform-tools/adb wait-for-device remount, exitcode: 1, stdout: Device must be bootloader unlocked
[task 2026-06-15T23:14:22.544+00:00] 23:14:22     INFO - Setting up ssl
[task 2026-06-15T23:14:22.575+00:00] 23:14:22     INFO - certutil | b''
[task 2026-06-15T23:14:22.599+00:00] 23:14:22     INFO - certutil | b''
[task 2026-06-15T23:14:22.610+00:00] 23:14:22     INFO - certutil | b'\nCertificate Nickname                                         Trust Attributes\n                                                             SSL,S/MIME,JAR/XPI\n\nweb-platform-tests                                           CT,, \n'
[task 2026-06-15T23:14:23.486+00:00] 23:14:23     INFO - adb Granting important runtime permissions to org.mozilla.geckoview.test_runner
[task 2026-06-15T23:14:23.621+00:00] 23:14:23     INFO - adb launch_application: am start -W -n org.mozilla.geckoview.test_runner/org.mozilla.geckoview.test_runner.TestRunnerActivity -a android.intent.action.MAIN --es env0 MOZ_CRASHREPORTER=1 --es env1 MOZ_CRASHREPORTER_NO_REPORT=1 --es env2 MOZ_CRASHREPORTER_SHUTDOWN=1 --es env3 MOZ_HIDE_RESULTS_TABLE=1 --es env4 MOZ_IN_AUTOMATION=1 --es env5 MOZ_LOG=signaling:3,mtransport:4,DataChannel:3,jsep:4 --es env6 R_LOG_LEVEL=6 --es env7 R_LOG_DESTINATION=stderr --es env8 R_LOG_VERBOSE=1 --es env9 MOZ_PROCESS_LOG=/tmp/tmp6z86xewxpidlog --es env10 MINIDUMP_SAVE_PATH=/builds/worker/workspace/build/blobber_upload_dir --es env11 MOZ_DISABLE_NONLOCAL_CONNECTIONS=1 --es arg0 -no-remote --es arg1 -profile --es arg2 /data/local/tmp/test_root/profile --es arg3 --marionette --es arg4 --remote-allow-system-access --es arg5 about:blank
[task 2026-06-15T23:14:25.986+00:00] 23:14:25     INFO - Starting runner
[task 2026-06-15T23:14:28.270+00:00] 23:14:28     INFO - TEST-START | /connection-allowlist/tentative/webtransport-shared-worker.https.sub.window.html
[task 2026-06-15T23:14:28.319+00:00] 23:14:28     INFO - Setting pref layout.disable-pixel-alignment to true
[task 2026-06-15T23:14:28.346+00:00] 23:14:28     INFO - Setting pref layout.css.anchor-positioning.enabled to true
[task 2026-06-15T23:14:28.366+00:00] 23:14:28     INFO - Setting pref network.dns.disableIPv6 to true
[task 2026-06-15T23:14:28.386+00:00] 23:14:28     INFO - Setting pref layout.css.tree-counting-functions.enabled to true
[task 2026-06-15T23:14:30.622+00:00] 23:14:30     INFO - 
[task 2026-06-15T23:14:30.622+00:00] 23:14:30     INFO - TEST-UNEXPECTED-FAIL | /connection-allowlist/tentative/webtransport-shared-worker.https.sub.window.html | Same-origin WebTransport from a shared worker succeeds. - assert_true: WebTransport to web-platform.test should succeed. expected true got false
[task 2026-06-15T23:14:30.622+00:00] 23:14:30     INFO - shared_worker_webtransport_test/<@https://web-platform.test:8443/connection-allowlist/tentative/webtransport-shared-worker.https.sub.window.js:31:18
[task 2026-06-15T23:14:30.622+00:00] 23:14:30     INFO - TEST-INFO | expected TIMEOUT
[task 2026-06-15T23:14:30.623+00:00] 23:14:30     INFO - 
[task 2026-06-15T23:14:30.623+00:00] 23:14:30     INFO - TEST-UNEXPECTED-PASS | /connection-allowlist/tentative/webtransport-shared-worker.https.sub.window.html | Cross-origin same-site WebTransport (www) from a shared worker is blocked. - expected NOTRUN
[task 2026-06-15T23:14:30.623+00:00] 23:14:30     INFO - TEST-INFO | expected NOTRUN
[task 2026-06-15T23:14:30.624+00:00] 23:14:30     INFO - 
[task 2026-06-15T23:14:30.624+00:00] 23:14:30     INFO - TEST-UNEXPECTED-PASS | /connection-allowlist/tentative/webtransport-shared-worker.https.sub.window.html | Cross-origin same-site WebTransport (www1) from a shared worker is blocked. - expected NOTRUN
[task 2026-06-15T23:14:30.624+00:00] 23:14:30     INFO - TEST-INFO | expected NOTRUN
[task 2026-06-15T23:14:30.624+00:00] 23:14:30     INFO - 
[task 2026-06-15T23:14:30.624+00:00] 23:14:30     INFO - TEST-UNEXPECTED-PASS | /connection-allowlist/tentative/webtransport-shared-worker.https.sub.window.html | Cross-site WebTransport from a shared worker is blocked. - expected NOTRUN
[task 2026-06-15T23:14:30.624+00:00] 23:14:30     INFO - TEST-INFO | expected NOTRUN
[task 2026-06-15T23:14:30.625+00:00] 23:14:30     INFO - 
[task 2026-06-15T23:14:30.625+00:00] 23:14:30     INFO - TEST-UNEXPECTED-PASS | /connection-allowlist/tentative/webtransport-shared-worker.https.sub.window.html | Cross-site WebTransport (www subdomain) from a shared worker is blocked. - expected NOTRUN
[task 2026-06-15T23:14:30.625+00:00] 23:14:30     INFO - TEST-INFO | expected NOTRUN
[task 2026-06-15T23:14:30.793+00:00] 23:14:30     INFO - TEST-UNEXPECTED-OK | /connection-allowlist/tentative/webtransport-shared-worker.https.sub.window.html | expected TIMEOUT
[task 2026-06-15T23:14:30.793+00:00] 23:14:30     INFO - TEST-INFO expected TIMEOUT | took 2530ms
[task 2026-06-15T23:14:30.795+00:00] 23:14:30     INFO - Restarting browser for new test group
[task 2026-06-15T23:14:31.445+00:00] 23:14:31     INFO - Closing logging queue
[task 2026-06-15T23:14:31.446+00:00] 23:14:31     INFO - STDOUT: cleanup aborted: args: /builds/worker/fetches/android-sdk-linux/platform-tools/adb wait-for-device remount, exitcode: 1, stdout: Device must be bootloader unlocked
[task 2026-06-15T23:14:31.446+00:00] 23:14:31     INFO - queue closed
[task 2026-06-15T23:14:31.461+00:00] 23:14:31     INFO - Setting up ssl
[task 2026-06-15T23:14:31.475+00:00] 23:14:31     INFO - certutil | b''
[task 2026-06-15T23:14:31.503+00:00] 23:14:31     INFO - certutil | b''
[task 2026-06-15T23:14:31.510+00:00] 23:14:31     INFO - certutil | b'\nCertificate Nickname                                         Trust Attributes\n                                                             SSL,S/MIME,JAR/XPI\n\nweb-platform-tests                                           CT,, \n'
[task 2026-06-15T23:14:32.444+00:00] 23:14:32     INFO - adb Granting important runtime permissions to org.mozilla.geckoview.test_runner
[task 2026-06-15T23:14:32.571+00:00] 23:14:32     INFO - adb launch_application: am start -W -n org.mozilla.geckoview.test_runner/org.mozilla.geckoview.test_runner.TestRunnerActivity -a android.intent.action.MAIN --es env0 MOZ_CRASHREPORTER=1 --es env1 MOZ_CRASHREPORTER_NO_REPORT=1 --es env2 MOZ_CRASHREPORTER_SHUTDOWN=1 --es env3 MOZ_HIDE_RESULTS_TABLE=1 --es env4 MOZ_IN_AUTOMATION=1 --es env5 MOZ_LOG=signaling:3,mtransport:4,DataChannel:3,jsep:4 --es env6 R_LOG_LEVEL=6 --es env7 R_LOG_DESTINATION=stderr --es env8 R_LOG_VERBOSE=1 --es env9 MOZ_PROCESS_LOG=/tmp/tmpvczlsa8cpidlog --es env10 MINIDUMP_SAVE_PATH=/builds/worker/workspace/build/blobber_upload_dir --es env11 MOZ_DISABLE_NONLOCAL_CONNECTIONS=1 --es arg0 -no-remote --es arg1 -profile --es arg2 /data/local/tmp/test_root/profile --es arg3 --marionette --es arg4 --remote-allow-system-access --es arg5 about:blank
[task 2026-06-15T23:14:35.058+00:00] 23:14:35     INFO - Starting runner
[task 2026-06-15T23:14:37.419+00:00] 23:14:37     INFO - TEST-START | /contacts/contacts-select.https.window.html

Comment 1

[BugBot [:suhaib / :marco]]

:kershaw, since you are the author of the regressor, bug 2031615, could you take a look?

For more information, please visit BugBot documentation.

Comment 2

[BugBot [:suhaib / :marco]]

Set release status flags based on info from the regressing bug 2031615

Comment 3

[Intermittent Failures Robot]

12 failures were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-central: 12

Table

	nofis
android-x86_64/opt	12

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2047791&startday=2026-06-15&endday=2026-06-21&tree=all

Comment 4

[Intermittent Failures Robot]

7 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 7

Table

	nofis
android-x86_64/opt	7

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2047791&startday=2026-06-22&endday=2026-06-28&tree=all

Comment 5

[Intermittent Failures Robot]

2 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 2

Table

	nofis
android-x86_64/opt	2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2047791&startday=2026-06-29&endday=2026-07-05&tree=all

Comment 6

[Intermittent Failures Robot]

5 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 5

Table

	nofis
android-x86_64/opt	5

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2047791&startday=2026-07-06&endday=2026-07-12&tree=all

Comment 7

[Intermittent Failures Robot]

2 failures were associated with this bug in the last 7 days.

Repository breakdown:

• try: 2

Table

	nofis
android-x86_64/opt	2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2047791&startday=2026-07-13&endday=2026-07-19&tree=all

Comment 8

[Intermittent Failures Robot]

3 failures were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-beta: 3

Table

	nofis
android-x86_64/opt	3

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2047791&startday=2026-07-20&endday=2026-07-26&tree=all

Comment 9

[Valentin Gosu [:valentin]]

Attachment: Bug 2047791 - Mark connection-allowlist WPTs as disabled r=#necko

Comment 10

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/74d2fbfaa62e
https://hg.mozilla.org/integration/autoland/rev/9c9063cadff8
Mark connection-allowlist WPTs as disabled r=necko-reviewers,jesup

Comment 12

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

https://hg.mozilla.org/mozilla-central/rev/9c9063cadff8

Comment 13

[BugBot [:suhaib / :marco]]

The patch landed in nightly and beta is affected.
:valentin, is this bug important enough to require an uplift?

• If yes, please nominate the patch for beta approval.
  • See https://wiki.mozilla.org/Release_Management/Requesting_an_Uplift for documentation on how to request an uplift.
• If no, please set status-firefox154 to wontfix.

For more information, please visit BugBot documentation.

Comment 14

[Valentin Gosu [:valentin]]

Seems low volume on beta. We can definitely uplift as it's 0 risk, but there are some conflicts.
If any tree sheriffs need it I can definitely uplift it.

Comment 15

[Intermittent Failures Robot]

16 failures were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-beta: 12
• try: 1
• mozilla-release: 3

Table

	no_variant
linux2404-x86_64/debug	16

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2047791&startday=2026-08-10&endday=2026-08-16&tree=all

Comment 16

[Intermittent Failures Robot]

9 failures were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-release: 9

Table

	no_variant
linux2404-x86_64/debug	9

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2047791&startday=2026-08-17&endday=2026-08-23&tree=all

Comment 17

[Intermittent Failures Robot]

1 failures were associated with this bug in the last 7 days.

Repository breakdown:

• mozilla-release: 1

Table

	no_variant
linux2404-x86_64/debug	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=2047791&startday=2026-08-24&endday=2026-08-30&tree=all