Upgrade Stylo to 2026-03-01 by Loirooriol · Pull Request #43045 · servo/servo

Loirooriol · 2026-03-05T20:21:16Z

This continues #42361

Changelog:

Upstream: servo/stylo@7cd2a17...74ddab4
Servo fixups: servo/stylo@a5eabbd...ecf17b5

In particular, this includes some performance optimizations, improves attr(), and adds support for none keywords in clamp().

Testing: Some WPT tests pass.

github-actions · 2026-03-05T20:21:33Z

🔨 Triggering try run (#22735091431) for Linux (WPT)

github-actions · 2026-03-05T20:50:33Z

Test results for linux-wpt from try job (#22735091431):

Flaky unexpected result (34)

OK [expected TIMEOUT] /IndexedDB/idbfactory_open.any.worker.html
- PASS [expected FAIL] subtest: Calling open() with version argument 1.5 should not throw.
- PASS [expected TIMEOUT] subtest: Calling open() with version argument 9007199254740991 should not throw.
- PASS [expected TIMEOUT] subtest: Calling open() with version argument undefined should not throw.

OK /_mozilla/css/offset_properties_inline.html (#40543)

FAIL [expected PASS] subtest: offsetTop

assert_equals: offsetTop of #inline-1 should be 0. expected 0 but got -1

FAIL [expected PASS] subtest: offsetLeft

assert_equals: offsetLeft of #inline-2 should be 40. expected 40 but got 25

CRASH [expected OK] /_webgl/conformance/attribs/gl-bindAttribLocation-matrix.html
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 /css/css-animations/event-order.tentative.html (#39000)
- PASS [expected FAIL] subtest: Same events on pseudo-elements follow the prescribed order
OK /css/css-fonts/generic-family-keywords-002.html (#40929)
- FAIL [expected PASS] subtest: font-family: -webkit-serif treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- FAIL [expected PASS] subtest: font-family: -webkit-sans-serif treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- FAIL [expected PASS] subtest: font-family: -webkit-cursive treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- FAIL [expected PASS] subtest: font-family: -webkit-fantasy treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- FAIL [expected PASS] subtest: font-family: -webkit-monospace treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- FAIL [expected PASS] subtest: font-family: -webkit-system-ui treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- FAIL [expected PASS] subtest: font-family: -webkit-math treated as <font-family>, not <generic-name>
```
assert_equals: expected 30 but got 50
```
- PASS [expected FAIL] subtest: font-family: -webkit-generic(fangsong) treated as <font-family>, not <generic-name>
- PASS [expected FAIL] subtest: font-family: -webkit-generic(kai) treated as <font-family>, not <generic-name>
- PASS [expected FAIL] subtest: font-family: -webkit-generic(khmer-mul) treated as <font-family>, not <generic-name>
- And 12 more unexpected results...
FAIL [expected PASS] /css/css-ui/webkit-appearance-radio-001.html
OK [expected ERROR] /fetch/fetch-later/quota/same-origin-iframe/sandboxed-iframe.https.window.html (#41704)
OK /fetch/metadata/generated/css-font-face.sub.tentative.html (#34624)
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy cross-site destination
OK [expected ERROR] /focus/focus-event-after-switching-iframes.sub.html (#40368)
ERROR [expected TIMEOUT] /html/browsers/browsing-the-web/history-traversal/pageswap/pageswap-initial-navigation.html (#40387)
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/history/the-history-interface/traverse_the_history_4.html (#21383)
- PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
CRASH [expected OK] /html/browsers/the-window-object/window-open-noopener.html?_top
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
```
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
```
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/jsurl-form-submit.tentative.html (#36489)
- PASS [expected FAIL] subtest: Verifies that form submissions scheduled inside javascript: urls take precedence over the javascript: url's return value.

OK /html/semantics/scripting-1/the-script-element/execution-timing/077.html (#22139)

FAIL [expected PASS] subtest: adding several types of scripts through the DOM and removing some of them confuses scheduler

assert_array_equals: expected property 1 to be "Script #1 ran" but got "Script #3 ran" (expected array ["Script #2 ran", "Script #1 ran", "Script #3 ran", "Script #4 ran"] got ["Script #2 ran", "Script #3 ran", "Script #4 ran", "Script #1 ran"])

TIMEOUT [expected OK] /html/user-activation/navigation-state-reset-sameorigin.html
- TIMEOUT [expected PASS] subtest: Post-navigation state reset.
```
Test timed out
```
OK /navigation-timing/test-navigation-type-reload.html (#33334)
- PASS [expected FAIL] subtest: Reload domComplete > Original domComplete
- PASS [expected FAIL] subtest: Reload domContentLoadedEventEnd > Original domContentLoadedEventEnd
- PASS [expected FAIL] subtest: Reload domContentLoadedEventStart > Original domContentLoadedEventStart
- PASS [expected FAIL] subtest: Reload domInteractive > Original domInteractive
- PASS [expected FAIL] subtest: Reload fetchStart > Original fetchStart
- PASS [expected FAIL] subtest: Reload loadEventEnd > Original loadEventEnd
- PASS [expected FAIL] subtest: Reload loadEventStart > Original loadEventStart
PASS [expected FAIL] /png/apng/acTL-plays-one.html (#41218)
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 [expected CRASH] /resource-timing/render-blocking-status-link.html (#41664)
OK /resource-timing/test_resource_timing.https.html (#25216)
- PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (img)
OK [expected TIMEOUT] /trusted-types/trusted-types-navigation.html?01-05 (#38975)
- PASS [expected TIMEOUT] subtest: Navigate a window via anchor with javascript:-urls in report-only mode.
- PASS [expected NOTRUN] subtest: Navigate a window via anchor with javascript:-urls w/ default policy in report-only mode.
- PASS [expected NOTRUN] subtest: Navigate a frame via anchor with javascript:-urls in enforcing mode.
TIMEOUT /trusted-types/trusted-types-navigation.html?06-10 (#37920)
- TIMEOUT [expected FAIL] subtest: Navigate a frame via anchor with javascript:-urls in report-only mode.
```
Test timed out
```
- NOTRUN [expected TIMEOUT] subtest: Navigate a frame via anchor with javascript:-urls w/ default policy in report-only mode.

OK /webdriver/tests/classic/back/user_prompts.py

FAIL [expected PASS] subtest: test_accept[alert]

AssertionError: assert 'about:blank' == 'https://web-platform.test:8443/webdriver/tests/support/inline.py?doc=%3C%21doctype+html%3E%0A%3Cmeta+charset%3DUTF-8%3E%0A%3Cp+id%3D1%3E&amp;mime=text%2Fhtml&amp;charset=UTF-8'

OK /webdriver/tests/classic/dismiss_alert/dismiss.py (#39098)
- FAIL [expected PASS] subtest: test_dismiss_in_popup_window
```
AssertionError: no such alert (404): No user prompt is currently active.
```
OK /webdriver/tests/classic/element_clear/clear.py
- FAIL [expected PASS] subtest: test_null_response_value
```
webdriver.error.NoSuchWindowException: no such window (404): No such window
```
OK /webdriver/tests/classic/element_click/user_prompts.py
- FAIL [expected PASS] subtest: test_accept[alert-None]
```
webdriver.error.NoSuchWindowException: no such window (404): No such window
```
OK /webdriver/tests/classic/element_send_keys/send_keys.py
- FAIL [expected PASS] subtest: test_null_parameter_value
```
webdriver.error.NoSuchWindowException: no such window (404): No such window
```
TIMEOUT [expected OK] /webdriver/tests/classic/perform_actions/key_modifiers.py
CRASH [expected OK] /workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null-in-array.html

Stable unexpected results that are known to be intermittent (16)

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 /_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 /beacon/beacon-basic.https.window.html (#41723)
- PASS [expected FAIL] subtest: Payload size restriction should be accumulated: type = string
OK /css/css-fonts/generic-family-keywords-001.html (#37467)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(fangsong)
ERROR [expected OK] /fetch/fetch-later/quota/same-origin-iframe/accumulated-oversized-payload.https.window.html (#41705)
OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
- PASS [expected FAIL] subtest: sec-fetch-mode
- PASS [expected FAIL] subtest: sec-fetch-storage-access - Cross-site
OK [expected ERROR] /fetch/metadata/window-open.https.sub.html (#40339)
OK /html/browsers/browsing-the-web/navigating-across-documents/005.html (#27062)
- PASS [expected FAIL] subtest: Link with onclick navigation and href navigation

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

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;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"

OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/update-the-rendering.html (#24145)
- FAIL [expected TIMEOUT] subtest: "Flush autofocus candidates" should be happen before a scroll event and animation frame callbacks
```
assert_array_equals: animationFrame lengths differ, expected array ["autofocus", "scroll", "animationFrame"] length 3, got ["animationFrame"] length 1
```
OK /html/semantics/embedded-content/media-elements/media_fragment_seek.html (#24114)
- PASS [expected FAIL] subtest: Video should seek to time specified in media fragment syntax
TIMEOUT [expected OK] /html/semantics/embedded-content/media-elements/src_object_blob.html (#40340)
- TIMEOUT [expected PASS] subtest: HTMLMediaElement.srcObject blob
```
Test timed out
```
TIMEOUT /trusted-types/trusted-types-navigation.html?31-35 (#38034)
- TIMEOUT [expected NOTRUN] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in report-only mode.
```
Test timed out
```
OK [expected TIMEOUT] /webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.html (#29053)
- PASS [expected TIMEOUT] subtest: StorageKey: test 3P about:blank window opened from a 3P iframe
OK [expected ERROR] /webxr/render_state_update.https.html (#27535)

Stable unexpected results (9)

OK /_mozilla/css/css-property-listing.html
- FAIL [expected PASS] subtest: Web-exposed CSS shorthands
```
assert_object_equals: property "0" expected "block-size" got "border-block-end-style"
```
PASS [expected FAIL] /css/css-values/attr-namespace-case-sensitivity.xhtml
PASS [expected FAIL] /css/css-values/attr-namespace-non-existing.html
PASS [expected FAIL] /css/css-values/attr-namespace-valid.xhtml
OK /css/css-values/clamp-color-computed.html
- PASS [expected FAIL] subtest: Property color value 'rgb(clamp(none, 30, 33) 0 0)'
- PASS [expected FAIL] subtest: Property color value 'rgb(clamp(none, 33, 30) 0 0)'
- PASS [expected FAIL] subtest: Property color value 'rgb(clamp(30, 33, none) 0 0)'
- PASS [expected FAIL] subtest: Property color value 'rgb(clamp(33, 30, none) 0 0)'
- PASS [expected FAIL] subtest: Property color value 'rgb(clamp(none, 30, none) 0 0)'
- PASS [expected FAIL] subtest: Property color value 'rgb(from red clamp(3, r, none) g b)'
- PASS [expected FAIL] subtest: Property color value 'rgb(from red clamp(r, 30, none) g b)'
- PASS [expected FAIL] subtest: Property color value 'rgb(from red clamp(none, r, 300) g b)'
- PASS [expected FAIL] subtest: Property color value 'rgb(from red clamp(none, r, r + 30) g b)'
OK /css/css-values/clamp-integer-computed.html
- PASS [expected FAIL] subtest: Property z-index value 'clamp(none, 30, 33)'
- PASS [expected FAIL] subtest: Property z-index value 'clamp(none, 33, 30)'
- PASS [expected FAIL] subtest: Property z-index value 'clamp(30, 33, none)'
- PASS [expected FAIL] subtest: Property z-index value 'clamp(33, 30, none)'
- PASS [expected FAIL] subtest: Property z-index value 'clamp(none, 30, none)'
OK /css/css-values/clamp-length-computed.html
- PASS [expected FAIL] subtest: Property letter-spacing value 'clamp(none, 30px, 33px)'
- PASS [expected FAIL] subtest: Property letter-spacing value 'clamp(none, 33px, 30px)'
- PASS [expected FAIL] subtest: Property letter-spacing value 'clamp(30px, 33px, none)'
- PASS [expected FAIL] subtest: Property letter-spacing value 'clamp(33px, 30px, none)'
- PASS [expected FAIL] subtest: Property letter-spacing value 'clamp(none, 30px, none)'
OK /css/css-values/clamp-length-serialize.html
- PASS [expected FAIL] subtest: e.style['margin-top'] = "clamp(none, 33px, 30px)" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "calc(clamp(none, 33px, 30px))" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "clamp(33px, 30px, none)" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "calc(clamp(33px, 30px, none))" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "clamp(none, 30px, none)" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "calc(clamp(none, 30px, none))" should set the property value
OK /css/css-values/clamp-partial-serialize.tentative.html
- PASS [expected FAIL] subtest: e.style['margin-top'] = "clamp(none, 2px, 3em)" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "calc(clamp(none, 2px, 3em))" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "clamp(1em, 2px, none)" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "calc(clamp(1em, 2px, none))" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "clamp(1px, 2px, clamp(none, 4px, 5em))" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "calc(clamp(1px, 2px, clamp(none, 4px, 5em)))" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "clamp(1px, 2px, clamp(3em, 4px, none))" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "calc(clamp(1px, 2px, clamp(3em, 4px, none)))" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "clamp(clamp(none, 2em, 3px), 4px, clamp(none, 6px, 7em))" should set the property value
- PASS [expected FAIL] subtest: e.style['margin-top'] = "calc(clamp(clamp(none, 2em, 3px), 4px, clamp(none, 6px, 7em)))" should set the property value
- And 6 more unexpected results...

github-actions · 2026-03-05T20:50:41Z

⚠️ Try run (#22735091431) failed!

github-actions · 2026-03-05T21:26:14Z

🔨 Triggering try run (#22737485400) for Linux (WPT)

github-actions · 2026-03-05T21:28:02Z

⚠️ Try run (#22737485400) cancelled.

github-actions · 2026-03-05T21:28:41Z

🔨 Triggering try run (#22737576450) for Linux (WPT)

github-actions · 2026-03-05T22:01:39Z

Test results for linux-wpt from try job (#22737576450):

Flaky unexpected result (28)

OK [expected TIMEOUT] /IndexedDB/idbfactory_open.any.worker.html
- PASS [expected FAIL] subtest: Calling open() with version argument 1.5 should not throw.
- PASS [expected TIMEOUT] subtest: Calling open() with version argument 9007199254740991 should not throw.
- PASS [expected TIMEOUT] subtest: Calling open() with version argument undefined should not throw.

OK /IndexedDB/idbtransaction-oncomplete.any.html (#42845)

FAIL [expected PASS] subtest: IDBTransaction - complete event

assert_array_equals: lengths differ, expected array ["upgradeneeded", "complete", "success", "opencursor"] length 4, got ["upgradeneeded", "complete", "success"] length 3

OK /_mozilla/css/offset_properties_inline.html (#40543)

FAIL [expected PASS] subtest: offsetTop

assert_equals: offsetTop of #inline-1 should be 0. expected 0 but got -1

FAIL [expected PASS] subtest: offsetLeft

assert_equals: offsetLeft of #inline-2 should be 40. expected 40 but got 25

OK /_mozilla/mozilla/getBoundingClientRect.html (#39668)
- FAIL [expected PASS] subtest: getBoundingClientRect 1
```
assert_equals: expected 62 but got 60.35
```
TIMEOUT [expected OK] /_mozilla/mozilla/window_resize_event.html (#36741)
- TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo
```
Test timed out
```
CRASH [expected OK] /_webgl/conformance2/programs/active-built-in-attribs.html
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.
FAIL [expected PASS] /css/css-ui/webkit-appearance-menulist-button-001.html
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
```
ERROR [expected OK] /fetch/fetch-later/quota/same-origin-iframe/accumulated-oversized-payload.https.window.html (#41705)
TIMEOUT /fetch/metadata/generated/css-images.https.sub.tentative.html (#42229)
- FAIL [expected PASS] subtest: content sec-fetch-site - Cross-site
```
assert_unreached: Reached unreachable code
```
TIMEOUT /fetch/metadata/generated/css-images.sub.tentative.html (#29047)
- FAIL [expected PASS] subtest: content sec-fetch-site - HTTPS downgrade-upgrade
```
assert_unreached: Reached unreachable code
```
CRASH [expected OK] /html/browsers/history/the-history-interface/traverse_the_history_4.html (#21383)
CRASH [expected TIMEOUT] /html/browsers/history/the-location-interface/location_replace_session_history.html (#41896)
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
```
TIMEOUT /html/semantics/embedded-content/media-elements/autoplay-default-feature-policy.https.sub.html (#41193)
- PASS [expected TIMEOUT] subtest: Default "autoplay" feature policy ["self"] allows same-origin iframes.
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/jsurl-form-submit.tentative.html (#36489)
- PASS [expected FAIL] subtest: Verifies that form submissions scheduled inside javascript: urls take precedence over the javascript: url's return value.
TIMEOUT [expected OK] /html/user-activation/navigation-state-reset-sameorigin.html
- TIMEOUT [expected PASS] subtest: Post-navigation state reset.
```
Test timed out
```
OK /mixed-content/tentative/autoupgrades/audio-upgrade.https.sub.html (#41697)
- FAIL [expected PASS] subtest: Audio autoupgraded
```
assert_equals: Length expected 1 but got Infinity
```
OK /mixed-content/tentative/autoupgrades/video-upgrade.https.sub.html (#41135)
- FAIL [expected PASS] subtest: Video of other host autoupgraded
```
assert_equals: Length. Other host expected 1 but got Infinity
```
OK /navigation-timing/test-navigation-type-reload.html (#33334)
- PASS [expected FAIL] subtest: Reload domComplete > Original domComplete
- PASS [expected FAIL] subtest: Reload loadEventEnd > Original loadEventEnd
- PASS [expected FAIL] subtest: Reload loadEventStart > Original loadEventStart
PASS [expected FAIL] /png/apng/acTL-plays-two.html (#41191)
OK /resource-timing/test_resource_timing.https.html (#25216)
- PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (iframe)
- PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (img)
- PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (link)
- PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (xmlhttprequest)
OK /visual-viewport/resize-event-order.html (#41981)
- PASS [expected FAIL] subtest: Popup: DOMWindow resize fired before VisualViewport.
CRASH [expected OK] /webaudio/the-audio-api/the-mediastreamaudiodestinationnode-interface/closed-audiocontext-construction.html
OK [expected ERROR] /webxr/render_state_update.https.html (#27535)
CRASH [expected OK] /xhr/access-control-and-redirects.any.html

Stable unexpected results that are known to be intermittent (16)

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
```
FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
CRASH [expected PASS] /_mozilla/shadow-dom/move-element-with-ua-shadow-tree-crash.html (#39473)
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 /beacon/beacon-basic.https.window.html (#41723)
- PASS [expected FAIL] subtest: Payload size restriction should be accumulated: type = string
OK /css/css-fonts/generic-family-keywords-001.html (#37467)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(fangsong)
- FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted generic(kai)
```
assert_equals: quoted generic(kai) matches  @font-face rule expected 30 but got 50
```
- FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted generic(khmer-mul)
```
assert_equals: quoted generic(khmer-mul) matches  @font-face rule expected 30 but got 50
```
- FAIL [expected PASS] subtest: @font-face matching for quoted and unquoted generic(nastaliq)
```
assert_equals: quoted generic(nastaliq) matches  @font-face rule expected 30 but got 50
```
OK /css/css-fonts/generic-family-keywords-003.html (#38994)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted fantasy (drawing text in a canvas)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted monospace (drawing text in a canvas)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted system-ui (drawing text in a canvas)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(fangsong) (drawing text in a canvas)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(khmer-mul) (drawing text in a canvas)
- PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted ui-serif (drawing text in a canvas)
OK [expected ERROR] /fetch/metadata/window-open.https.sub.html (#40339)
- FAIL [expected PASS] subtest: Cross-site window, forced, reloaded
```
The operation is insecure.
```
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 /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
- 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;
```
- TIMEOUT [expected NOTRUN] subtest: Host element with delegatesFocus including no focusable descendants should be skipped
```
Test timed out
```
OK [expected TIMEOUT] /html/interaction/focus/the-autofocus-attribute/update-the-rendering.html (#24145)
- FAIL [expected TIMEOUT] subtest: "Flush autofocus candidates" should be happen before a scroll event and animation frame callbacks
```
assert_array_equals: animationFrame lengths differ, expected array ["autofocus", "scroll", "animationFrame"] length 3, got ["animationFrame"] length 1
```
OK /html/semantics/embedded-content/media-elements/media_fragment_seek.html (#24114)
- PASS [expected FAIL] subtest: Video should seek to time specified in media fragment syntax
TIMEOUT [expected OK] /html/semantics/embedded-content/media-elements/src_object_blob.html (#40340)
- TIMEOUT [expected PASS] subtest: HTMLMediaElement.srcObject blob
```
Test timed out
```
OK /mixed-content/tentative/autoupgrades/mixed-content-cors.https.sub.html (#41123)
- FAIL [expected PASS] subtest: Cross-Origin video should get upgraded even if CORS is set
```
assert_equals: Length. Other host expected 1 but got Infinity
```
OK /resource-timing/buffer-full-add-then-clear.html (#40819)
- FAIL [expected PASS] subtest: Test that if the buffer is cleared after entries were added to the secondary buffer, those entries make it into the primary one
```
assert_equals: Number of entries does not match the expected value. expected 3 but got 0
```
OK [expected TIMEOUT] /trusted-types/trusted-types-navigation.html?31-35 (#38034)
- PASS [expected NOTRUN] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in report-only mode.
- FAIL [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ a default policy throwing an exception in enforcing mode.
```
promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""
```
- FAIL [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ a default policy throwing an exception in report-only mode.
```
promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""
```
- FAIL [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ a default policy making the URL invalid in enforcing mode.
```
promise_test: Unhandled rejection with value: "Unexpected message received: \"No securitypolicyviolation reported!\""
```

github-actions · 2026-03-05T22:01:50Z

✨ Try run (#22737576450) succeeded.

components/layout/flow/inline/mod.rs

mrobinson

Looks good with a comment here and a couple comments in Stylo.

components/layout/flow/inline/mod.rs

Signed-off-by: Oriol Brufau <[email protected]>

This continues #43045 Changelog: - Upstream: servo/stylo@74ddab4...6de1071 - Servo fixups: servo/stylo@9f2f4f3...6cfce6f Stylo tracking issue: servo/stylo#347 Summary of improvements: - Adding support for the CSS-wide `revert-rule` keyword - `::details-content` becomes element-backed, thus accepting nested pseudo-elements like `::details-content::before`. - Custom properties can now be registered using dashed idents in their syntax - Various `attr()` improvements Testing: Various WPT improvements --------- Signed-off-by: Oriol Brufau <[email protected]>

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Upgrade Stylo to 2026-03-01 servo/stylo#321

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servo-highfive added S-needs-rebase There are merge conflict errors. and removed S-awaiting-review There is new code that needs to be reviewed. labels Mar 6, 2026

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Upgrade Stylo to 2026-03-01

e2d5b50

Signed-off-by: Oriol Brufau <[email protected]>

Loirooriol added 4 commits March 6, 2026 23:56

Fixup for https://phabricator.services.mozilla.com/D282788

6db6194

Signed-off-by: Oriol Brufau <[email protected]>

Fixup for https://phabricator.services.mozilla.com/D284297

a8f39bc

Signed-off-by: Oriol Brufau <[email protected]>

Fixup for https://phabricator.services.mozilla.com/D284632

e7a5e88

Signed-off-by: Oriol Brufau <[email protected]>

Update test expectations

2c40279

Signed-off-by: Oriol Brufau <[email protected]>

Loirooriol force-pushed the stylo-2026-03-01 branch from 5f56303 to 2c40279 Compare March 6, 2026 22:56

servo-highfive added S-awaiting-review There is new code that needs to be reviewed. and removed S-needs-rebase There are merge conflict errors. labels Mar 6, 2026

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servo-highfive added S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. and removed S-tests-failed The changes caused existing tests to fail. labels Mar 6, 2026

Merged via the queue into servo:main with commit 42d228d Mar 7, 2026
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Upgrade Stylo to 2026-04-01 #43878

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Upgrade Stylo to 2026-03-01#43045

Upgrade Stylo to 2026-03-01#43045
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