html: Enhance media network and decoding error handling by tharkum · Pull Request #39899 · servo/servo

tharkum · 2025-10-15T13:33:07Z

The 'media' element has multiple media data processing steps for media source loading and requires properly handling any media network and decoding errors between different components:

element (resource selection algorithm)
fetch context/listener (async response)
media backend (async playback events)

The fetch listener will stop processing any actions (response/chunk/eof) in case if current fetch request was cancelled (due to a network/decoding error or it was aborted by user).

Also send EOS event to media backend ONLY once the entire media resource has been fetched so media pipeline will not generate decoding (playback) error for fetched empty sources (eg. "about:blank" or "data:,").

See https://html.spec.whatwg.org/multipage/#media-data-processing-steps-list

Testing: No changes in WPT test expectations

Fixes: #39759 ("about:blank")
Fixes: #38980 ("data:,")

github-actions · 2025-10-15T13:37:46Z

🔨 Triggering try run (#18530785328) for Linux (WPT)

github-actions · 2025-10-15T14:09:11Z

Test results for linux-wpt from try job (#18530785328):

Flaky unexpected result (31)

OK /FileAPI/url/url-with-fetch.any.worker.html (#21517)
- FAIL [expected PASS] subtest: Revoke blob URL after calling fetch, fetch should succeed
```
promise_test: Unhandled rejection with value: object "TypeError: Network error occurred"
```
OK /IndexedDB/idbfactory_open.any.html
- FAIL [expected PASS] subtest: Calling open() with version argument 1.5 should not throw.
```
assert_equals: version expected 1 but got 9007199254740991
```
OK /_webgl/conformance/textures/misc/texture-upload-size.html (#21770)
- PASS [expected FAIL] subtest: WebGL test #45
- PASS [expected FAIL] subtest: WebGL test #47
- PASS [expected FAIL] subtest: WebGL test #49
- PASS [expected FAIL] subtest: WebGL test #51
- FAIL [expected PASS] subtest: WebGL test #53
```
assert_true: Texture was smaller than the expected size 2x2 expected true got false
```
- FAIL [expected PASS] subtest: WebGL test #55
```
assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false
```
- FAIL [expected PASS] subtest: WebGL test #57
```
assert_true: Texture was smaller than the expected size 2x2 expected true got false
```
- FAIL [expected PASS] subtest: WebGL test #59
```
assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false
```
- PASS [expected FAIL] subtest: WebGL test #61
- PASS [expected FAIL] subtest: WebGL test #63
- And 10 more unexpected results...
FAIL [expected PASS] /css/CSS2/linebox/vertical-align-029.xht
FAIL [expected PASS] /css/WOFF2/metadatadisplay-schema-copyright-029.xht
FAIL [expected PASS] /css/WOFF2/metadatadisplay-schema-extension-030.xht (#39592)
PASS [expected FAIL] /css/css-fonts/font-palette-13.html
PASS [expected FAIL] /css/css-fonts/font-palette-9.html
FAIL [expected PASS] /css/css-fonts/font-variation-settings-descriptor-04.html
PASS [expected FAIL] /css/css-grid/grid-items/grid-auto-margin-and-replaced-item-001.html (#37162)
FAIL [expected PASS] /css/css-text/i18n/css3-text-line-break-opclns-025.html
FAIL [expected PASS] /css/css-text/text-encoding/shaping-no-join-002.html
FAIL [expected PASS] /css/css-text/text-transform/text-transform-upperlower-021.html
TIMEOUT /fetch/fetch-later/send-on-deactivate.https.window.html (#39628)
- PASS [expected TIMEOUT] subtest: Call fetchLater() when BFCached with activateAfter=0 sends immediately.
- FAIL [expected TIMEOUT] subtest: fetchLater() does not send aborted request on navigating away a page w/o BFCache.
```
assert_equals: expected (object) object "[object Object]" but got (undefined) undefined
```
OK /fetch/metadata/generated/css-font-face.sub.tentative.html (#34624)
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination
ERROR /fetch/metadata/generated/serviceworker.https.sub.html (#36247)
- FAIL [expected PASS] subtest: sec-fetch-site - Same origin, no options - registration
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html (#28691)
- FAIL [expected PASS] subtest: load event does not fire on window.open('about:blank')
```
assert_unreached: load should not be fired Reached unreachable code
```
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html (#20768)
- FAIL [expected PASS] subtest: Tests that a fragment navigation in the unload handler will not block the initial navigation
```
assert_equals: expected "" but got "#fragment"
```
OK /html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html (#28697)
- PASS [expected FAIL] subtest: aElement.click() before the load event must NOT replace
TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/document-with-fragment-empty.html (#28259)
- TIMEOUT [expected FAIL] subtest: Autofocus elements in top-level browsing context's documents with empty fragments should work.
```
Test timed out
```
FAIL [expected PASS] /html/rendering/the-details-element/details-summary-display-inline-002.html
OK /html/semantics/document-metadata/the-meta-element/pragma-directives/attr-meta-http-equiv-refresh/allow-scripts-flag-changing-1.html (#39694)
- PASS [expected FAIL] subtest: Meta refresh is blocked by the allow-scripts sandbox flag at its creation time, not when refresh comes due
OK /html/semantics/document-metadata/the-meta-element/pragma-directives/attr-meta-http-equiv-refresh/allow-scripts-flag-changing-2.html (#39703)
- FAIL [expected PASS] subtest: Meta refresh of the original iframe is not blocked if moved into a sandboxed iframe
```
uncaught exception: Error: assert_unreached: The iframe into which the meta was moved must not refresh Reached unreachable code
```
CRASH [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html (#22667)
CRASH [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html (#22154)
OK /html/semantics/forms/form-submission-0/text-plain.window.html (#28687)
- PASS [expected FAIL] subtest: text/plain: Basic test (normal form)
OK /trusted-types/trusted-types-navigation.html?21-25 (#38997)
- FAIL [expected PASS] subtest: Navigate a window via form-submission with javascript:-urls in enforcing mode.
```
promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""
```
OK [expected TIMEOUT] /webmessaging/with-ports/017.html (#24486)
- PASS [expected TIMEOUT] subtest: origin of the script that invoked the method, about:blank
OK [expected TIMEOUT] /webmessaging/without-ports/017.html (#24486)
- PASS [expected TIMEOUT] subtest: origin of the script that invoked the method, about:blank
OK [expected ERROR] /webxr/render_state_update.https.html (#27535)
ERROR [expected OK] /workers/baseurl/alpha/sharedworker-in-worker.html (#21315)

Stable unexpected results that are known to be intermittent (30)

TIMEOUT /FileAPI/url/url-in-tags-revoke.window.html (#19978)
- TIMEOUT [expected PASS] subtest: Fetching a blob URL immediately before revoking it works in <script> tags.
```
Test timed out
```

OK /IndexedDB/idbcursor-continuePrimaryKey-exceptions.any.worker.html (#39277)

FAIL [expected PASS] subtest: IDBCursor continuePrimaryKey() on object store cursor

assert_throws_dom: continuePrimaryKey() should throw if source is not an index function "function() {
        cursor.continuePrimaryKey(2, 2);
      }" threw object "TypeError: cursor.continuePrimaryKey is not a function" that is not a DOMException InvalidAccessError: property "code" is equal to undefined, expected 15

OK /IndexedDB/idbobjectstore_getAll.any.html (#39276)
- PASS [expected FAIL] subtest: Get all values with transaction.commit()
OK /IndexedDB/idbobjectstore_getAll.any.worker.html (#39400)
- PASS [expected FAIL] subtest: Get all values with transaction.commit()

OK /IndexedDB/key-conversion-exceptions.any.html (#39305)

FAIL [expected PASS] subtest: IDBCursor continue() method with throwing/invalid keys

assert_throws_exactly: key conversion with throwing getter should rethrow function "() =&gt; {
      receiver[method](key);
    }" threw object "TypeError: receiver[method] is not a function" but we expected it to throw object "getter: throwing from getter"

OK /IndexedDB/key-conversion-exceptions.any.worker.html (#39284)

FAIL [expected PASS] subtest: IDBCursor continue() method with throwing/invalid keys

assert_throws_exactly: key conversion with throwing getter should rethrow function "() =&gt; {
      receiver[method](key);
    }" threw object "TypeError: receiver[method] is not a function" but we expected it to throw object "getter: throwing from getter"

FAIL [expected PASS] /_mozilla/css/iframe/hide_and_show.html (#15265)
FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
TIMEOUT [expected OK] /_mozilla/mozilla/window_resize_event.html (#36741)
- TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo
```
Test timed out
```
TIMEOUT [expected FAIL] /dom/xslt/large-cdata.html (#38029)
OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
- PASS [expected FAIL] subtest: sec-fetch-user
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Same site
CRASH [expected TIMEOUT] /html/anonymous-iframe/indexeddb.tentative.https.window.html (#39254)
OK /html/browsers/browsing-the-web/navigating-across-documents/005.html (#27062)
- FAIL [expected PASS] subtest: Link with onclick navigation and href navigation
```
assert_equals: expected "href" but got "click"
```
OK /html/browsers/browsing-the-web/navigating-across-documents/008.html (#24456)
- FAIL [expected PASS] subtest: Link with onclick form submit to javascript url and href navigation
```
assert_equals: expected "href" but got "click"
```
OK /html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html (#29066)
- PASS [expected FAIL] subtest: Check execution order on load handler
- PASS [expected FAIL] subtest: Check execution order from nested timeout

OK

/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html

(#29048)

FAIL [expected PASS] subtest: Navigating to a different document with location.href

assert_equals: expected "http://web-platform.test:8000/common/blank.html?1" but got "about:blank"

FAIL [expected PASS] subtest: Navigating to a different document with location.assign

assert_equals: expected "http://web-platform.test:8000/common/blank.html?1" but got "about:blank"

OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.html (#29056)
- PASS [expected FAIL] subtest: Cross-origin navigation started from unload handler must be ignored
OK /html/browsers/history/the-history-interface/traverse_the_history_2.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted

OK /html/browsers/windows/embedded-opener-remove-frame.html (#23867)

FAIL [expected PASS] subtest: opener of discarded auxiliary browsing context

assert_object_equals: property "get" expected function "function opener() {
    [native code]
}" got function "function opener() {
    [native code]
}"

OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
- PASS [expected NOTRUN] subtest: Non-HTMLElement should not support autofocus
- FAIL [expected NOTRUN] subtest: Host element with delegatesFocus should support autofocus
```
assert_equals: expected Element node &lt;div autofocus=""&gt;&lt;/div&gt; but got Element node &lt;body&gt;&lt;/body&gt;
```
- FAIL [expected NOTRUN] subtest: Host element with delegatesFocus including no focusable descendants should be skipped
```
assert_equals: expected Element node &lt;input autofocus=""&gt;&lt;/input&gt; but got Element node &lt;body&gt;&lt;/body&gt;
```
- FAIL [expected NOTRUN] subtest: Area element should support autofocus
```
promise_test: Unhandled rejection with value: object "TypeError: can't access property "appendChild", w.document.querySelector(...) is null"
```
OK [expected TIMEOUT] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_navigate_other_frame_popup.sub.html (#39702)
- FAIL [expected TIMEOUT] subtest: Sandboxed iframe can not navigate other frame's popup
```
assert_equals: expected "cannot navigate" but got "can navigate"
```
CRASH [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html (#39878)
OK [expected CRASH] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html (#24057)
OK [expected CRASH] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html (#24066)
OK /html/semantics/forms/form-submission-0/urlencoded2.window.html (#28687)
- FAIL [expected PASS] subtest: application/x-www-form-urlencoded: Basic test (normal form)
```
assert_equals: expected "basic=test" but got ""
```
OK [expected CRASH] /html/semantics/forms/the-fieldset-element/disabled-003.html (#31730, #39631)
OK /navigation-timing/test-navigation-type-reload.html (#33334)
- FAIL [expected PASS] subtest: Reload domComplete > Original domComplete
```
assert_true: Reload domComplete &gt; Original domComplete expected true got false
```
- FAIL [expected PASS] subtest: Reload domContentLoadedEventEnd > Original domContentLoadedEventEnd
```
assert_true: Reload domContentLoadedEventEnd &gt; Original domContentLoadedEventEnd expected true got false
```
- FAIL [expected PASS] subtest: Reload loadEventEnd > Original loadEventEnd
```
assert_true: Reload loadEventEnd &gt; Original loadEventEnd expected true got false
```
- FAIL [expected PASS] subtest: Reload loadEventStart > Original loadEventStart
```
assert_true: Reload loadEventStart &gt; Original loadEventStart expected true got false
```

OK /preload/preload-error.sub.html (#37177)

FAIL [expected PASS] subtest: 404 (fetch): main

assert_greater_than: http://web-platform.test:8000/preload/resources/dummy.xml?pipe=status%28404%29&amp;label=fetch should be loaded expected a number greater than 0 but got 0

PASS [expected FAIL] subtest: CORS (fetch): main

OK /trusted-types/trusted-types-navigation.html?01-05 (#38975)
- PASS [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls in report-only mode.
- PASS [expected FAIL] subtest: Navigate a frame via anchor with javascript:-urls in enforcing mode.
TIMEOUT [expected OK] /webdriver/tests/classic/perform_actions/navigation.py (#38822)

github-actions · 2025-10-15T14:09:21Z

✨ Try run (#18530785328) succeeded.

github-actions · 2025-10-16T06:13:29Z

🔨 Triggering try run (#18552070911) for Linux (WPT)

github-actions · 2025-10-16T06:39:23Z

Test results for linux-wpt from try job (#18552070911):

Flaky unexpected result (31)

OK /IndexedDB/idbfactory_open.any.html
- FAIL [expected PASS] subtest: Calling open() with version argument 1.5 should not throw.
```
assert_equals: version expected 1 but got 9007199254740991
```
FAIL [expected PASS] /_mozilla/gfx-rs-gecko/descriptor-ranges.html (#23258)
FAIL [expected PASS] /css/WOFF2/blocks-overlap-001.xht (#39666)
FAIL [expected PASS] /css/WOFF2/metadatadisplay-schema-copyright-026.xht
FAIL [expected PASS] /css/WOFF2/metadatadisplay-schema-extension-049.xht
FAIL [expected PASS] /css/WOFF2/metadatadisplay-schema-uniqueid-007.xht (#39429)
FAIL [expected PASS] /css/WOFF2/tabledata-glyf-bbox-002.xht
FAIL [expected PASS] /css/WOFF2/tabledata-transform-hmtx-003.xht
OK /css/css-animations/event-order.tentative.html (#39000)
- PASS [expected FAIL] subtest: Same events on pseudo-elements follow the prescribed order
OK /css/css-cascade/layer-font-face-override.html (#35935)
- FAIL [expected PASS] subtest: @font-face override update with appended sheet 1
```
assert_equals: expected "80px" but got "41.45px"
```
- FAIL [expected PASS] subtest: @font-face override update with appended sheet 2
```
assert_equals: expected "80px" but got "41.45px"
```
PASS [expected FAIL] /css/css-fonts/font-variant-position-05.html (#39659)
FAIL [expected PASS] /css/css-text/white-space/break-spaces-before-first-char-010.html
OK /fetch/content-length/api-and-duplicate-headers.any.html (#35873)
- FAIL [expected PASS] subtest: fetch() and duplicate Content-Length/Content-Type headers
```
promise_test: Unhandled rejection with value: object "TypeError: Network error occurred"
```
OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
- PASS [expected FAIL] subtest: sec-fetch-user
CRASH [expected TIMEOUT] /html/anonymous-iframe/indexeddb.tentative.https.window.html (#39254)
OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html (#28681)
- FAIL [expected PASS] subtest: load & pageshow events do not fire on contentWindow of <iframe> element created with src='about:blank'
```
assert_unreached: load should not be fired Reached unreachable code
```
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.html (#29056)
- PASS [expected FAIL] subtest: Cross-origin navigation started from unload handler must be ignored
TIMEOUT /html/browsers/history/the-history-interface/001.html (#12580)
- FAIL [expected PASS] subtest: traversing history must also traverse hash changes
```
assert_equals: (this could cause other failures later on) expected "" but got "test"
```
TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/document-with-fragment-top.html (#28259)
- TIMEOUT [expected FAIL] subtest: Autofocus elements in top-level browsing context's documents with "top" fragments should work.
```
Test timed out
```
TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/update-the-rendering.html (#24145)
- TIMEOUT [expected FAIL] subtest: "Flush autofocus candidates" should be happen before a scroll event and animation frame callbacks
```
Test timed out
```
ERROR [expected OK] /html/semantics/embedded-content/media-elements/event_timeupdate_noautoplay.html (#25046)

OK /html/semantics/embedded-content/the-iframe-element/iframe-loading-lazy-nav-location-assign.html (#32863)

FAIL [expected PASS] subtest: Navigating iframe loading='lazy' before it is loaded: location.assign

uncaught exception: Error: assert_equals: expected "http://web-platform.test:8000/html/semantics/embedded-content/the-iframe-element/support/blank.htm?nav" but got "http://web-platform.test:8000/html/semantics/embedded-content/the-iframe-element/support/blank.htm?src"

CRASH [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html (#39878)
OK [expected CRASH] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html (#24057)
OK [expected CRASH] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html (#24066)
OK /html/semantics/forms/form-submission-0/text-plain.window.html (#28687)
- PASS [expected FAIL] subtest: text/plain: Basic test (normal form)
OK /intersection-observer/callback-cross-realm-report-exception.html (#38829)
- FAIL [expected PASS] subtest: IntersectionObserver reports the exception from its callback in the callback's global object
```
assert_array_equals: lengths differ, expected array ["frame1"] length 1, got [] length 0
```
OK /preload/preload-xhr.html (#39092)
- FAIL [expected PASS] subtest: Make an XHR request immediately after creating link rel=preload.
```
assert_equals: resources/dummy.xml?token=c4547a36-39f2-4bae-92de-e1ee563ccba8 expected 1 but got 0
```
FAIL [expected PASS] /shadow-dom/shadow-style-invalidation-vw-units.html (#38468)
OK [expected TIMEOUT] /webmessaging/without-ports/018.html (#24485)
- PASS [expected TIMEOUT] subtest: origin of the script that invoked the method, javascript:
OK /xhr/open-url-multi-window-5.htm (#23360)
- FAIL [expected PASS] subtest: XMLHttpRequest: open() resolving URLs (multi-Window; 5)
```
assert_throws_dom: function "function() {client.open("GET", "...") }" did not throw
```

Stable unexpected results that are known to be intermittent (27)

OK /FileAPI/url/url-with-fetch.any.worker.html (#21517)
- FAIL [expected PASS] subtest: Revoke blob URL after calling fetch, fetch should succeed
```
promise_test: Unhandled rejection with value: object "TypeError: Network error occurred"
```

OK /IndexedDB/idbcursor-continuePrimaryKey-exceptions.any.worker.html (#39277)

FAIL [expected PASS] subtest: IDBCursor continuePrimaryKey() on object store cursor

assert_throws_dom: continuePrimaryKey() should throw if source is not an index function "function() {
        cursor.continuePrimaryKey(2, 2);
      }" threw object "TypeError: cursor.continuePrimaryKey is not a function" that is not a DOMException InvalidAccessError: property "code" is equal to undefined, expected 15

TIMEOUT /IndexedDB/idbobjectstore_delete.any.worker.html (#39069)
- FAIL [expected PASS] subtest: delete() key doesn't match any records
```
assert_unreached: unexpected open.success event Reached unreachable code
```
OK /IndexedDB/idbobjectstore_getAll.any.html (#39276)
- PASS [expected FAIL] subtest: Get all values with transaction.commit()
OK /IndexedDB/idbobjectstore_getAll.any.worker.html (#39400)
- PASS [expected FAIL] subtest: Get all values with transaction.commit()

OK /IndexedDB/key-conversion-exceptions.any.html (#39305)

FAIL [expected PASS] subtest: IDBCursor continue() method with throwing/invalid keys

assert_throws_exactly: key conversion with throwing getter should rethrow function "() =&gt; {
      receiver[method](key);
    }" threw object "TypeError: receiver[method] is not a function" but we expected it to throw object "getter: throwing from getter"

OK /IndexedDB/key-conversion-exceptions.any.worker.html (#39284)

FAIL [expected PASS] subtest: IDBCursor continue() method with throwing/invalid keys

assert_throws_exactly: key conversion with throwing getter should rethrow function "() =&gt; {
      receiver[method](key);
    }" threw object "TypeError: receiver[method] is not a function" but we expected it to throw object "getter: throwing from getter"

FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
TIMEOUT [expected OK] /_mozilla/mozilla/window_resize_event.html (#36741)
- TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo
```
Test timed out
```
OK /css/css-fonts/generic-family-keywords-003.html (#38994)
- FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted serif (drawing text in a canvas)
```
assert_equals: quoted serif matches  @font-face rule expected 125 but got 40
```
OK /custom-elements/form-associated/ElementInternals-setFormValue.html (#29174)
- PASS [expected FAIL] subtest: Single value - name is missing
TIMEOUT [expected FAIL] /dom/xslt/large-cdata.html (#38029)
TIMEOUT /fetch/fetch-later/send-on-deactivate.https.window.html (#39628)
- PASS [expected TIMEOUT] subtest: fetchLater() sends on page entering BFCache if BackgroundSync is off.
- FAIL [expected TIMEOUT] subtest: fetchLater() does not send aborted request on navigating away a page w/o BFCache.
```
assert_equals: expected (object) object "[object Object]" but got (undefined) undefined
```
OK /fetch/metadata/generated/css-font-face.sub.tentative.html (#34624)
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination
ERROR /fetch/metadata/generated/serviceworker.https.sub.html (#36247)
- FAIL [expected PASS] subtest: sec-fetch-site - Same origin, no options - registration
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
OK /html/browsers/browsing-the-web/navigating-across-documents/005.html (#27062)
- FAIL [expected PASS] subtest: Link with onclick navigation and href navigation
```
assert_equals: expected "href" but got "click"
```
OK /html/browsers/browsing-the-web/navigating-across-documents/008.html (#24456)
- FAIL [expected PASS] subtest: Link with onclick form submit to javascript url and href navigation
```
assert_equals: expected "href" but got "click"
```
OK /html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html (#29066)
- PASS [expected FAIL] subtest: Check execution order on load handler
- PASS [expected FAIL] subtest: Check execution order from nested timeout
OK /html/browsers/history/the-history-interface/traverse_the_history_5.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted

OK /html/browsers/windows/embedded-opener-remove-frame.html (#23867)

FAIL [expected PASS] subtest: opener of discarded auxiliary browsing context

assert_object_equals: property "get" expected function "function opener() {
    [native code]
}" got function "function opener() {
    [native code]
}"

TIMEOUT /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
- PASS [expected NOTRUN] subtest: Non-HTMLElement should not support autofocus
- FAIL [expected NOTRUN] subtest: Host element with delegatesFocus should support autofocus
```
assert_equals: expected Element node &lt;div autofocus=""&gt;&lt;/div&gt; but got Element node &lt;body&gt;&lt;div autofocus=""&gt;&lt;/div&gt;&lt;/body&gt;
```
- TIMEOUT [expected NOTRUN] subtest: Host element with delegatesFocus including no focusable descendants should be skipped
```
Test timed out
```
OK /html/semantics/forms/form-submission-0/urlencoded2.window.html (#28687)
- FAIL [expected PASS] subtest: application/x-www-form-urlencoded: Basic test (normal form)
```
assert_equals: expected "basic=test" but got ""
```
OK [expected CRASH] /html/semantics/forms/the-fieldset-element/disabled-003.html (#31730, #39631)
OK /navigation-timing/test-navigation-type-reload.html (#33334)
- FAIL [expected PASS] subtest: Reload domComplete > Original domComplete
```
assert_true: Reload domComplete &gt; Original domComplete expected true got false
```
- PASS [expected FAIL] subtest: Reload domContentLoadedEventStart > Original domContentLoadedEventStart
- PASS [expected FAIL] subtest: Reload fetchStart > Original fetchStart
- FAIL [expected PASS] subtest: Reload loadEventEnd > Original loadEventEnd
```
assert_true: Reload loadEventEnd &gt; Original loadEventEnd expected true got false
```
- FAIL [expected PASS] subtest: Reload loadEventStart > Original loadEventStart
```
assert_true: Reload loadEventStart &gt; Original loadEventStart expected true got false
```

OK /preload/preload-error.sub.html (#37177)

FAIL [expected PASS] subtest: success (fetch): main

assert_greater_than: http://web-platform.test:8000/preload/resources/dummy.xml?label=fetch should be loaded expected a number greater than 0 but got 0

OK /trusted-types/trusted-types-navigation.html?01-05 (#38975)
- PASS [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls in enforcing mode.
TIMEOUT [expected OK] /webdriver/tests/classic/perform_actions/navigation.py (#38822)

github-actions · 2025-10-16T06:39:33Z

✨ Try run (#18552070911) succeeded.

jdm

Looks good, but I'd like to take another look after the CanGc-related changes have been made!

components/script/dom/html/htmlmediaelement.rs

tharkum · 2025-10-17T13:21:48Z

Added #[no_trace] attribute to current_fetch_context member
HTMLMediaElementFetchContext have no DOM traceable members (except FetchCanceller, but it is also have no DOM traceable members), so mutable borrowing within GC should be safe (self.current_fetch_context.borrow_mut() + seek())

pub(crate) struct FetchCanceller {
    #[no_trace]
    request_id: Option<RequestId>,
    #[no_trace]
    core_resource_thread: Option<CoreResourceThread>,
}

Replaced DomRefCell to RefCell for HTMLMediaElementFetchContext and BufferedDataSource
None of specific functions for DomRefCell were used for these members

@jdm < Please take a look. The fine-grained borrowing still could be added as well...

tharkum · 2025-10-22T07:41:32Z

Rebased on top of main branch (incl. addition of CanGc to methods)

tharkum · 2025-10-22T08:48:41Z

FIlled new issue: Intermittent CRASH in /websockets/unload-a-document/001.html?wss #40072

github-actions · 2025-10-22T08:49:23Z

🔨 Triggering try run (#18710671296) for Linux (WPT)

github-actions · 2025-10-22T09:15:09Z

Test results for linux-wpt from try job (#18710671296):

Flaky unexpected result (21)

OK /IndexedDB/idbfactory_open.any.html
- FAIL [expected PASS] subtest: Calling open() with version argument 1.5 should not throw.
```
assert_equals: version expected 1 but got 9007199254740991
```
TIMEOUT /IndexedDB/idbrequest-onupgradeneeded.any.html (#38895)
- PASS [expected FAIL] subtest: indexedDB.delete called from upgradeneeded handler
OK /css/css-cascade/layer-font-face-override.html (#35935)
- FAIL [expected PASS] subtest: @font-face override update with appended sheet 1
```
assert_equals: expected "80px" but got "41.45px"
```
- FAIL [expected PASS] subtest: @font-face override update with appended sheet 2
```
assert_equals: expected "80px" but got "41.45px"
```
OK /custom-elements/form-associated/form-disabled-callback.html (#38843)
- PASS [expected FAIL] subtest: A disabled form-associated custom element should not submit an entry for it
TIMEOUT [expected OK] /fetch/api/redirect/redirect-keepalive.https.any.html (#32153)
- TIMEOUT [expected PASS] subtest: [keepalive][iframe][load] mixed content redirect; setting up
```
Test timed out
```
OK /fetch/content-length/api-and-duplicate-headers.any.worker.html (#35197)
- FAIL [expected PASS] subtest: fetch() and duplicate Content-Length/Content-Type headers
```
promise_test: Unhandled rejection with value: object "TypeError: Network error occurred"
```
TIMEOUT [expected OK] /html/browsers/browsing-the-web/navigating-across-documents/anchor-fragment-form-submit.html
OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html (#28691)
- FAIL [expected PASS] subtest: load event does not fire on window.open('about:blank')
```
assert_unreached: load should not be fired Reached unreachable code
```
TIMEOUT /html/browsers/history/the-history-interface/001.html (#12580)
- FAIL [expected PASS] subtest: traversing history must also traverse hash changes
```
assert_equals: (this could cause other failures later on) expected "" but got "test"
```
OK /html/browsers/history/the-history-interface/traverse_the_history_2.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
OK /html/browsers/history/the-history-interface/traverse_the_history_4.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
OK /html/browsers/history/the-history-interface/traverse_the_history_5.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
TIMEOUT [expected PASS] /html/browsers/origin/origin-keyed-agent-clusters/popups-crash.https.html
OK /html/semantics/document-metadata/the-meta-element/pragma-directives/attr-meta-http-equiv-refresh/allow-scripts-flag-changing-2.html (#39703)
- FAIL [expected PASS] subtest: Meta refresh of the original iframe is not blocked if moved into a sandboxed iframe
```
uncaught exception: Error: assert_unreached: The iframe into which the meta was moved must not refresh Reached unreachable code
```

OK /html/semantics/embedded-content/the-iframe-element/iframe-loading-lazy-reload-location-reload.html (#32595)

FAIL [expected PASS] subtest: Reloading iframe loading='lazy' before it is loaded: location.reload

uncaught exception: Error: assert_equals: expected "http://web-platform.test:8000/html/semantics/embedded-content/the-iframe-element/support/blank.htm?src" but got "about:blank"

OK /html/semantics/scripting-1/the-script-element/module/dynamic-import/blob-url.any.worker.html (#33909)
- FAIL [expected PASS] subtest: Revoking a blob URL immediately after calling import will not fail
```
promise_test: Unhandled rejection with value: object "TypeError: Dynamic import failed"
```
OK /preload/prefetch-document.html (#37210)
- FAIL [expected PASS] subtest: different-site document prefetch with 'as=document' should not be consumed
```
assert_equals: expected 2 but got 1
```
TIMEOUT [expected OK] /resource-timing/nested-context-navigations-iframe.html (#24311)
- TIMEOUT [expected PASS] subtest: Test that iframe navigations are not observable by the parent, even after history navigations by the parent
```
Test timed out
```
- NOTRUN [expected PASS] subtest: Test that crossorigin iframe navigations are not observable by the parent, even after history navigations by the parent
- NOTRUN [expected PASS] subtest: Test that cross-site iframe navigations are not observable by the parent, even after history navigations by the parent
- NOTRUN [expected PASS] subtest: Test that iframe navigations are not observable by the parent
- NOTRUN [expected PASS] subtest: Test that crossorigin iframe navigations are not observable by the parent
- NOTRUN [expected PASS] subtest: Test that cross-site iframe navigations are not observable by the parent
- NOTRUN [expected PASS] subtest: Test that iframe refreshes are not observable by the parent
- NOTRUN [expected PASS] subtest: Test that crossorigin iframe refreshes are not observable by the parent
- NOTRUN [expected PASS] subtest: Test that cross-site iframe refreshes are not observable by the parent
ERROR /service-workers/idlharness.https.any.html (#36250)
- PASS [expected TIMEOUT] subtest: ServiceWorkerContainer interface: operation register((TrustedScriptURL or USVString), optional RegistrationOptions)
- PASS [expected TIMEOUT] subtest: NavigationPreloadManager interface: operation enable()
- PASS [expected TIMEOUT] subtest: NavigationPreloadManager interface: operation disable()
- PASS [expected TIMEOUT] subtest: NavigationPreloadManager interface: operation setHeaderValue(ByteString)
- PASS [expected TIMEOUT] subtest: NavigationPreloadManager interface: operation getState()
OK /websockets/unload-a-document/003.html
- FAIL [expected PASS] subtest: WebSockets: navigating nested browsing context
```
assert_unreached: document was not discarded Reached unreachable code
```
OK /workers/dedicated-worker-from-blob-url.window.html (#22286)
- PASS [expected FAIL] subtest: Creating a dedicated worker from a blob URL works immediately before revoking.

Stable unexpected results that are known to be intermittent (27)

OK /IndexedDB/idbcursor-continuePrimaryKey-exceptions.any.worker.html (#39277)

FAIL [expected PASS] subtest: IDBCursor continuePrimaryKey() on object store cursor

assert_throws_dom: continuePrimaryKey() should throw if source is not an index function "function() {
        cursor.continuePrimaryKey(2, 2);
      }" threw object "TypeError: cursor.continuePrimaryKey is not a function" that is not a DOMException InvalidAccessError: property "code" is equal to undefined, expected 15

OK /IndexedDB/idbobjectstore_getAll.any.html (#39276)
- PASS [expected FAIL] subtest: Get all values with transaction.commit()

OK /IndexedDB/key-conversion-exceptions.any.html (#39305)

FAIL [expected PASS] subtest: IDBCursor continue() method with throwing/invalid keys

assert_throws_exactly: key conversion with throwing getter should rethrow function "() =&gt; {
      receiver[method](key);
    }" threw object "TypeError: receiver[method] is not a function" but we expected it to throw object "getter: throwing from getter"

FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
OK /_webgl/conformance/textures/misc/texture-upload-size.html (#21770)
- PASS [expected FAIL] subtest: WebGL test #45
- PASS [expected FAIL] subtest: WebGL test #47
- PASS [expected FAIL] subtest: WebGL test #49
- PASS [expected FAIL] subtest: WebGL test #51
- FAIL [expected PASS] subtest: WebGL test #53
```
assert_true: Texture was smaller than the expected size 2x2 expected true got false
```
- FAIL [expected PASS] subtest: WebGL test #55
```
assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false
```
- FAIL [expected PASS] subtest: WebGL test #57
```
assert_true: Texture was smaller than the expected size 2x2 expected true got false
```
- FAIL [expected PASS] subtest: WebGL test #59
```
assert_true: getError expected: INVALID_VALUE. Was NO_ERROR : when calling texSubImage2D with the same texture upload with offset 1, 1 expected true got false
```
- PASS [expected FAIL] subtest: WebGL test #61
- PASS [expected FAIL] subtest: WebGL test #63
- And 10 more unexpected results...
OK /content-security-policy/frame-ancestors/frame-ancestors-path-ignored.window.html (#36468)
- PASS [expected FAIL] subtest: A 'frame-ancestors' CSP directive with a URL that includes a path should be ignored.
OK /custom-elements/form-associated/ElementInternals-setFormValue.html (#29174)
- PASS [expected FAIL] subtest: Single value - name is missing
TIMEOUT [expected FAIL] /dom/xslt/large-cdata.html (#38029)
OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
- PASS [expected FAIL] subtest: sec-fetch-site - Same origin
- FAIL [expected PASS] subtest: sec-fetch-user
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Cross-site
OK /fetch/metadata/generated/css-font-face.sub.tentative.html (#34624)
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination
ERROR /fetch/metadata/generated/serviceworker.https.sub.html (#36247)
- FAIL [expected PASS] subtest: sec-fetch-site - Same origin, no options - registration
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
OK /html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html (#29066)
- PASS [expected FAIL] subtest: Check execution order on load handler
- PASS [expected FAIL] subtest: Check execution order from nested timeout
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html (#20768)
- FAIL [expected PASS] subtest: Tests that a fragment navigation in the unload handler will not block the initial navigation
```
assert_equals: expected "" but got "#fragment"
```

OK /html/browsers/windows/embedded-opener-remove-frame.html (#23867)

FAIL [expected PASS] subtest: opener of discarded auxiliary browsing context

assert_object_equals: property "get" expected function "function opener() {
    [native code]
}" got function "function opener() {
    [native code]
}"

OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html (#29087)
TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/document-with-fragment-empty.html (#28259)
- TIMEOUT [expected FAIL] subtest: Autofocus elements in top-level browsing context's documents with empty fragments should work.
```
Test timed out
```

OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)

FAIL [expected TIMEOUT] subtest: Element with tabindex should support autofocus
```
assert_equals: expected "SPAN" but got "BODY"
```
PASS [expected NOTRUN] subtest: Non-HTMLElement should not support autofocus

FAIL [expected NOTRUN] subtest: Host element with delegatesFocus should support autofocus

assert_equals: expected Element node &lt;div autofocus=""&gt;&lt;/div&gt; but got Element node &lt;body&gt;&lt;div autofocus=""&gt;&lt;/div&gt;&lt;/body&gt;

FAIL [expected NOTRUN] subtest: Host element with delegatesFocus including no focusable descendants should be skipped

assert_equals: expected Element node &lt;input autofocus=""&gt;&lt;/input&gt; but got Element node &lt;body&gt;&lt;div autofocus=""&gt;&lt;/div&gt;&lt;input autofocus=""&gt;&lt;/body&gt;

FAIL [expected NOTRUN] subtest: Area element should support autofocus

promise_test: Unhandled rejection with value: object "TypeError: can't access property "appendChild", w.document.querySelector(...) is null"

TIMEOUT [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_navigate_other_frame_popup.sub.html (#39702)
- TIMEOUT [expected FAIL] subtest: Sandboxed iframe can not navigate other frame's popup
```
Test timed out
```
OK /html/semantics/forms/form-submission-0/text-plain.window.html (#28687)
- PASS [expected FAIL] subtest: text/plain: Basic test (normal form)
OK /html/webappapis/user-prompts/print-during-unload.html (#35944)
- PASS [expected FAIL] subtest: print() during unload
OK /navigation-timing/test-navigation-type-reload.html (#33334)
- FAIL [expected PASS] subtest: Reload domComplete > Original domComplete
```
assert_true: Reload domComplete &gt; Original domComplete expected true got false
```
- FAIL [expected PASS] subtest: Reload domContentLoadedEventEnd > Original domContentLoadedEventEnd
```
assert_true: Reload domContentLoadedEventEnd &gt; Original domContentLoadedEventEnd expected true got false
```
- FAIL [expected PASS] subtest: Reload domContentLoadedEventStart > Original domContentLoadedEventStart
```
assert_true: Reload domContentLoadedEventStart &gt; Original domContentLoadedEventStart expected true got false
```
- FAIL [expected PASS] subtest: Reload fetchStart > Original fetchStart
```
assert_true: Reload fetchStart &gt; Original fetchStart expected true got false
```
- FAIL [expected PASS] subtest: Reload loadEventEnd > Original loadEventEnd
```
assert_true: Reload loadEventEnd &gt; Original loadEventEnd expected true got false
```
- FAIL [expected PASS] subtest: Reload loadEventStart > Original loadEventStart
```
assert_true: Reload loadEventStart &gt; Original loadEventStart expected true got false
```

OK /preload/preload-error.sub.html (#37177)

PASS [expected FAIL] subtest: success (fetch): main

FAIL [expected PASS] subtest: 404 (fetch): main

assert_greater_than: http://web-platform.test:8000/preload/resources/dummy.xml?pipe=status%28404%29&amp;label=fetch should be loaded expected a number greater than 0 but got 0

PASS [expected FAIL] subtest: CORS (fetch): main

OK /trusted-types/trusted-types-navigation.html?01-05 (#38975)
- PASS [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls in enforcing mode.
OK /trusted-types/trusted-types-navigation.html?21-25 (#38997)
- PASS [expected FAIL] subtest: Navigate a window via form-submission with javascript:-urls in enforcing mode.
OK /trusted-types/trusted-types-navigation.html?26-30 (#38807)
- PASS [expected FAIL] subtest: Navigate a frame via form-submission with javascript:-urls in enforcing mode.
OK /trusted-types/trusted-types-navigation.html?31-35 (#38034)
- PASS [expected FAIL] subtest: Navigate a frame via form-submission with javascript:-urls in report-only mode.
TIMEOUT [expected OK] /webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.html (#29053)
- TIMEOUT [expected PASS] subtest: StorageKey: test 3P about:blank window opened from a 3P iframe
```
Test timed out
```

github-actions · 2025-10-22T09:15:26Z

✨ Try run (#18710671296) succeeded.

jdm · 2025-10-22T19:38:20Z

I'll have a closer look tonight, but I'm worried that fixes like marking fields #[no_trace] to allow mutable borrowing during a GC both make our CanGC scheme harder to rely upon, and pose a risk if we introduce a transitive GC member to the field in the future.

tharkum · 2025-10-23T06:32:24Z

Of course there are some risk to implement it wrong with introduced a transitive GC member to the field in future, but it is trade off between performance and safety (no point to trace non js manageable objects during CG).

BTW, I think FetchCanceller shouldn't be JSTraceable which will reduce path of GC tracing for some objects (like InProgressLoad, DocumentLoader, DroppableEventSource)

#[derive(Default, JSTraceable, MallocSizeOf)]
pub(crate) struct FetchCanceller {
    #[no_trace]
    request_id: Option<RequestId>,
    #[no_trace]
    core_resource_thread: Option<CoreResourceThread>,
}

components/script/dom/html/htmlmediaelement.rs

The 'media' element has multiple media data processing steps for media source loading and requires properly handling any media network and decoding errors between different components: - element (resource selection algorithm) - fetch context/listener (async response) - media backend (async playback events) The fetch listener will stop processing any actions (response/chunk/eof) in case if current fetch request was cancelled (due to a network/decoding error or it was aborted by user). Also send EOS event to media backend ONLY once the entire media resource has been fetched so media pipeline will not generate decoding (playback) error for fetched empty sources (eg. "about:blank" or "data:,"). See https://html.spec.whatwg.org/multipage/#media-data-processing-steps-list Testing: No changes in WPT test expectations Fixes: servo#39759 ("about:blank") Fixes: servo#38980 ("data:,") Signed-off-by: Andrei Volykhin <[email protected]>

github-actions · 2025-10-23T07:27:33Z

🔨 Triggering try run (#18740879825) for Linux (WPT)

github-actions · 2025-10-23T07:51:30Z

Test results for linux-wpt from try job (#18740879825):

Flaky unexpected result (26)

OK /IndexedDB/idbfactory_open.any.html
- FAIL [expected PASS] subtest: Calling open() with version argument 1.5 should not throw.
```
assert_equals: version expected 1 but got 9007199254740991
```
TIMEOUT [expected PASS] /_mozilla/shadow-dom/move-element-with-ua-shadow-tree-crash.html (#39473)
TIMEOUT [expected OK] /credential-management/credentialscontainer-frame-basics.https.html (#39430)
- TIMEOUT [expected FAIL] subtest: navigator.credentials should be undefined in documents generated from data: URLs.
```
Test timed out
```
OK /css/css-cascade/layer-cssom-order-reverse.html (#36094)
- FAIL [expected PASS] subtest: Delete layer invalidates @font-face
```
assert_equals: expected "220px" but got "133px"
```
OK /css/css-text/i18n/ja/css-text-line-break-ja-pr-loose.html
- FAIL [expected PASS] subtest: 20AC EURO SIGN may appear at line start if ja and loose
```
assert_approx_equals: expected 62 +/- 1 but got 58
```
- FAIL [expected PASS] subtest: FE69 SMALL DOLLAR SIGN may appear at line start if ja and loose
```
assert_approx_equals: expected 50 +/- 1 but got 57
```
OK /css/css-text/i18n/unknown-lang/css-text-line-break-cpm-normal.html
- FAIL [expected PASS] subtest: 2047 DOUBLE QUESTION MARK may NOT appear at line start if lang unknown and normal
```
assert_approx_equals: expected 99 +/- 1 but got 97
```
OK /custom-elements/form-associated/ElementInternals-setFormValue.html (#29174)
- PASS [expected FAIL] subtest: Single value - name is missing
TIMEOUT [expected FAIL] /dom/xslt/large-cdata.html (#38029)
TIMEOUT [expected OK] /fetch/api/redirect/redirect-keepalive.https.any.html (#32153)
- TIMEOUT [expected PASS] subtest: [keepalive][iframe][load] mixed content redirect; setting up
```
Test timed out
```
OK /html/browsers/browsing-the-web/navigating-across-documents/005.html (#27062)
- PASS [expected FAIL] subtest: Link with onclick navigation and href navigation
OK /html/browsers/browsing-the-web/navigating-across-documents/006.html (#21382)
- PASS [expected FAIL] subtest: Link with onclick form submit and href navigation
OK /html/browsers/browsing-the-web/navigating-across-documents/008.html (#24456)
- PASS [expected FAIL] subtest: Link with onclick form submit to javascript url and href navigation
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.html (#29049)
- PASS [expected FAIL] subtest: Same-origin navigation started from unload handler must be ignored
OK /html/browsers/history/the-history-interface/traverse_the_history_4.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
TIMEOUT [expected OK] /html/interaction/focus/the-autofocus-attribute/document-with-fragment-nonexistent.html (#28259)
- TIMEOUT [expected FAIL] subtest: Autofocus elements in top-level browsing context's documents with non-existent fragments should work.
```
Test timed out
```
TIMEOUT /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
- FAIL [expected TIMEOUT] subtest: Element with tabindex should support autofocus
```
assert_equals: expected "SPAN" but got "BODY"
```
- TIMEOUT [expected NOTRUN] subtest: Non-HTMLElement should not support autofocus
```
Test timed out
```
OK /html/semantics/forms/form-submission-0/multipart-formdata.window.html (#28725)
- PASS [expected FAIL] subtest: multipart/form-data: Basic test (normal form)
TIMEOUT [expected OK] /html/semantics/forms/form-submission-0/reparent-form-during-planned-navigation-task.html (#29724)
- TIMEOUT [expected PASS] subtest: reparent-form-during-planned-navigation-task
```
Test timed out
```
OK /html/semantics/forms/historical.html (#28568)
- PASS [expected FAIL] subtest: <input name=isindex> should not be supported
OK /preload/prefetch-document.html (#37210)
- FAIL [expected PASS] subtest: different-site document prefetch with 'as=document' should not be consumed
```
assert_equals: expected 2 but got 1
```
OK /preload/preload-invalid-resources.html (#39091)
- PASS [expected FAIL] subtest: Preloading an invalid image (missing) should preload and not re-fetch
OK /trusted-types/trusted-types-navigation.html?26-30 (#38807)
- FAIL [expected PASS] subtest: Navigate a window via form-submission with javascript:-urls in report-only mode.
```
promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""
```
OK /wasm/webapi/abort.any.worker.html (#40013)
- FAIL [expected PASS] subtest: instantiateStreaming() asynchronously racing with abort should succeed or reject with AbortError
```
assert_equals: expected "AbortError" but got "CompileError"
```

OK /webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html (#22849)

FAIL [expected PASS] subtest: buffer-stitching-2

assert_approx_equals: Stitched sine‑wave buffers at sample rate 43800 sample[28303] |-113539.390625 - 0.6460561156272888| = 113540.03668111563 &gt; 0.0038986 expected 0.6460561156272888 +/- 0.0038986 but got -113539.390625

OK [expected ERROR] /webxr/render_state_update.https.html (#27535)
ERROR [expected OK] /workers/baseurl/alpha/import-in-moduleworker.html (#21315)

Stable unexpected results that are known to be intermittent (24)

OK /IndexedDB/idbcursor-continuePrimaryKey-exceptions.any.worker.html (#39277)

FAIL [expected PASS] subtest: IDBCursor continuePrimaryKey() on object store cursor

assert_throws_dom: continuePrimaryKey() should throw if source is not an index function "function() {
        cursor.continuePrimaryKey(2, 2);
      }" threw object "TypeError: cursor.continuePrimaryKey is not a function" that is not a DOMException InvalidAccessError: property "code" is equal to undefined, expected 15

OK /IndexedDB/idbobjectstore_getAll.any.html (#39276)
- PASS [expected FAIL] subtest: Get all values with transaction.commit()
OK /IndexedDB/idbobjectstore_getAll.any.worker.html (#39400)
- PASS [expected FAIL] subtest: Get all values with transaction.commit()

OK /IndexedDB/key-conversion-exceptions.any.html (#39305)

FAIL [expected PASS] subtest: IDBCursor continue() method with throwing/invalid keys

assert_throws_exactly: key conversion with throwing getter should rethrow function "() =&gt; {
      receiver[method](key);
    }" threw object "TypeError: receiver[method] is not a function" but we expected it to throw object "getter: throwing from getter"

OK /IndexedDB/key-conversion-exceptions.any.worker.html (#39284)

FAIL [expected PASS] subtest: IDBCursor continue() method with throwing/invalid keys

assert_throws_exactly: key conversion with throwing getter should rethrow function "() =&gt; {
      receiver[method](key);
    }" threw object "TypeError: receiver[method] is not a function" but we expected it to throw object "getter: throwing from getter"

FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
TIMEOUT [expected OK] /_mozilla/mozilla/window_resize_event.html (#36741)
- TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo
```
Test timed out
```
OK /css/css-cascade/layer-font-face-override.html (#35935)
- FAIL [expected PASS] subtest: @font-face override update with appended sheet 1
```
assert_equals: expected "80px" but got "41.45px"
```
- FAIL [expected PASS] subtest: @font-face override update with appended sheet 2
```
assert_equals: expected "80px" but got "41.45px"
```
OK /fetch/content-length/api-and-duplicate-headers.any.worker.html (#35197)
- FAIL [expected PASS] subtest: fetch() and duplicate Content-Length/Content-Type headers
```
promise_test: Unhandled rejection with value: object "TypeError: Network error occurred"
```
OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
- PASS [expected FAIL] subtest: sec-fetch-site - Same origin
- FAIL [expected PASS] subtest: sec-fetch-user
```
promise_test: Unhandled rejection with value: object "Error: Failed to query for recorded headers."
```
OK /fetch/metadata/generated/css-font-face.sub.tentative.html (#34624)
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination
OK /html/browsers/browsing-the-web/navigating-across-documents/009.html (#24456)
- PASS [expected FAIL] subtest: Link with onclick form submit to javascript url with document.write and href navigation
OK /html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html (#29066)
- PASS [expected FAIL] subtest: Check execution order on load handler
- PASS [expected FAIL] subtest: Check execution order from nested timeout
OK /html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html (#20768)
- FAIL [expected PASS] subtest: Tests that a fragment navigation in the unload handler will not block the initial navigation
```
assert_equals: expected "" but got "#fragment"
```

OK /html/browsers/browsing-the-web/navigating-across-documents/refresh/same-document-refresh.html (#34597)

FAIL [expected PASS] subtest: Same-Document Referrer from Refresh

assert_equals: original page loads expected "http://web-platform.test:8000/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refresh-with-section.sub.html?url=%23section" but got "http://web-platform.test:8000/html/browsers/browsing-the-web/navigating-across-documents/refresh/resources/refresh-with-section.sub.html?url=%23section#section"

OK /html/browsers/windows/embedded-opener-remove-frame.html (#23867)

FAIL [expected PASS] subtest: opener of discarded auxiliary browsing context

assert_object_equals: property "get" expected function "function opener() {
    [native code]
}" got function "function opener() {
    [native code]
}"

OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/autofocus-dialog.html (#29087)
TIMEOUT [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_navigate_other_frame_popup.sub.html (#39702)
- TIMEOUT [expected FAIL] subtest: Sandboxed iframe can not navigate other frame's popup
```
Test timed out
```
OK /html/semantics/forms/form-submission-0/text-plain.window.html (#28687)
- PASS [expected FAIL] subtest: text/plain: Basic test (normal form)
OK /html/semantics/forms/form-submission-0/urlencoded2.window.html (#28687)
- FAIL [expected PASS] subtest: application/x-www-form-urlencoded: Basic test (normal form)
```
assert_equals: expected "basic=test" but got ""
```
OK [expected CRASH] /html/semantics/forms/the-fieldset-element/disabled-003.html (#31730, #39631)
OK /navigation-timing/test-navigation-type-reload.html (#33334)
- FAIL [expected PASS] subtest: Reload domComplete > Original domComplete
```
assert_true: Reload domComplete &gt; Original domComplete expected true got false
```
- FAIL [expected PASS] subtest: Reload domContentLoadedEventEnd > Original domContentLoadedEventEnd
```
assert_true: Reload domContentLoadedEventEnd &gt; Original domContentLoadedEventEnd expected true got false
```
- FAIL [expected PASS] subtest: Reload domContentLoadedEventStart > Original domContentLoadedEventStart
```
assert_true: Reload domContentLoadedEventStart &gt; Original domContentLoadedEventStart expected true got false
```
- FAIL [expected PASS] subtest: Reload fetchStart > Original fetchStart
```
assert_true: Reload fetchStart &gt; Original fetchStart expected true got false
```
- FAIL [expected PASS] subtest: Reload loadEventEnd > Original loadEventEnd
```
assert_true: Reload loadEventEnd &gt; Original loadEventEnd expected true got false
```
- FAIL [expected PASS] subtest: Reload loadEventStart > Original loadEventStart
```
assert_true: Reload loadEventStart &gt; Original loadEventStart expected true got false
```
OK /preload/preload-error.sub.html (#37177)
- PASS [expected FAIL] subtest: success (fetch): main
OK /trusted-types/trusted-types-navigation.html?01-05 (#38975)
- PASS [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls in enforcing mode.
- PASS [expected FAIL] subtest: Navigate a window via anchor with javascript:-urls in report-only mode.

github-actions · 2025-10-23T07:51:55Z

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