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Upgrade Stylo to 2026-01-01#41916

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Loirooriol:stylo-2026-01-01
Jan 15, 2026
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Upgrade Stylo to 2026-01-01#41916
Loirooriol merged 6 commits intoservo:mainfrom
Loirooriol:stylo-2026-01-01

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@Loirooriol Loirooriol commented Jan 15, 2026

This continues #41696

Changelog:

Stylo tracking issue: servo/stylo#286

Testing: Various tests are now passing

@Loirooriol Loirooriol added T-full Do a full try run dependencies Pull requests that update a dependency file labels Jan 15, 2026
@github-actions github-actions bot removed the T-full Do a full try run label Jan 15, 2026
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🔨 Triggering try run (#21016916331) for Linux (Unit Tests, Build libservo, WPT, Bencher), Windows (Unit Tests, Build libservo), Android, OpenHarmony, Lint

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🐰 Bencher Report

Branch41916/PR
Testbedself-hosted-image:servo-ubuntu2204-bench

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🐰 Bencher Report

Branch41916/PR
TestbedHUAWEI Mate 60 Pro

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Test results for linux-wpt from try job (#21016916331):

Flaky unexpected result (33)
  • OK /FileAPI/file/send-file-form-utf-8.html
    • FAIL [expected PASS] subtest: Upload file-for-upload-in-form-.txt (x-user-defined) in UTF-8 form

      assert_greater_than: file-for-upload-in-form-.txt: multipart form data must have at least 3 lines: "" expected a number greater than 2 but got 0
      

    • FAIL [expected PASS] subtest: Upload file-for-upload-in-form-☺😂.txt (windows-1252) in UTF-8 form

      assert_greater_than: file-for-upload-in-form-☺😂.txt: multipart form data must have at least 3 lines: "" expected a number greater than 2 but got 0
      

  • OK /IndexedDB/idbfactory-open-error-properties.any.html
    • PASS [expected FAIL] subtest: Properties of error event from failed open()
  • OK /IndexedDB/idbfactory-open-error-properties.any.worker.html
    • PASS [expected FAIL] subtest: Properties of error event from failed open()
  • OK /_mozilla/webxr/create_session.https.html
    • FAIL [expected PASS] subtest: create_session

      can't access property "simulateDeviceConnection", navigator.xr.test is undefined
      

  • OK /_mozilla/webxr/obtain_frame.https.html
    • FAIL [expected PASS] subtest: obtain_frame

      promise_test: Unhandled rejection with value: object "TypeError: can't access property "simulateDeviceConnection", navigator.xr.test is undefined"
      

  • 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 6 more unexpected results...
  • CRASH [expected OK] /_webgl/conformance2/wasm/readpixels-2gb-in-4gb-wasm-memory.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-fonts/generic-family-keywords-003.html (#38994)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted ui-serif (drawing text in a canvas)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted ui-monospace (drawing text in a canvas)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted ui-rounded (drawing text in a canvas)
  • OK /css/css-fonts/variations/font-weight-matching.html (#38577)
    • FAIL [expected PASS] subtest: Test @font-face matching for weight 250

      assert_approx_equals: @font-face should be mapped to CSSTest Weights 800. expected 90 +/- 2 but got 180
      

    • FAIL [expected PASS] subtest: Test @font-face matching for weight 399

      assert_approx_equals: @font-face should be mapped to CSSTest Weights 800. expected 90 +/- 2 but got 180
      

  • CRASH [expected PASS] /css/css-overflow/scroll-marker-in-display-none-column-crash.html
  • OK /custom-elements/form-associated/ElementInternals-setFormValue.html (#29174)
    • PASS [expected FAIL] subtest: Single value - empty name exists
    • PASS [expected FAIL] subtest: setFormValue with an empty FormData should submit nothing
  • OK [expected ERROR] /fetch/fetch-later/quota/same-origin-iframe/sandboxed-iframe.https.window.html (#41704)
  • TIMEOUT /fetch/metadata/generated/css-images.sub.tentative.html (#29047)
    • TIMEOUT [expected PASS] subtest: background-image sec-fetch-storage-access - Not sent to non-trustworthy cross-site destination

      Test timed out
      

  • CRASH [expected OK] /html/browsers/browsing-the-web/navigating-across-documents/005.html (#27062)
  • OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html (#28691)
    • PASS [expected FAIL] subtest: load event does not fire on window.open('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
  • TIMEOUT /html/semantics/embedded-content/media-elements/autoplay-disabled-by-feature-policy.https.sub.html (#41221)
    • FAIL [expected TIMEOUT] subtest: Feature-Policy header: autoplay "none" disallows same-origin iframes.

      assert_false: autoplay expected false got true
      

  • OK [expected TIMEOUT] /html/semantics/embedded-content/media-elements/src_object_blob.html (#40340)
    • PASS [expected TIMEOUT] subtest: HTMLMediaElement.srcObject blob
  • OK /html/semantics/embedded-content/the-iframe-element/iframe-loading-lazy-nav-form-submit.html (#32607)
    • FAIL [expected PASS] subtest: Navigating iframe loading='lazy' before it is loaded: form submit

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

  • 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)
    • FAIL [expected PASS] subtest: text/plain: Basic File test (normal form)

      assert_equals: expected "basic=file-test.txt\r\n" but got ""
      

    • PASS [expected FAIL] subtest: text/plain: 0x00 in name (formdata event)
  • OK /html/semantics/forms/form-submission-0/urlencoded2.window.html (#28687)
    • FAIL [expected PASS] subtest: application/x-www-form-urlencoded: Basic File test (normal form)

      assert_equals: expected "basic=file-test.txt" but got ""
      

    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: 0x00 in name (normal form)
    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: 0x00 in value (normal form)
    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: \r\n in name (normal form)
    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: \r\n in value (formdata event)
    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: double quote in value (formdata event)
    • PASS [expected FAIL] subtest: application/x-www-form-urlencoded: non-ASCII in filename (normal form)
  • CRASH [expected OK] /html/semantics/forms/the-fieldset-element/disabled-003.html (#31730, #39631)
  • OK /navigation-timing/test-navigation-type-reload.html (#33334)
    • PASS [expected FAIL] subtest: Reload domContentLoadedEventEnd > Original domContentLoadedEventEnd
  • TIMEOUT /resource-timing/test_resource_timing.https.html (#25216)
    • PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (xmlhttprequest)
  • CRASH [expected ERROR] /trusted-types/SharedWorker-setTimeout-setInterval.html
  • CRASH [expected OK] /trusted-types/should-trusted-type-policy-creation-be-blocked-by-csp-003.html
  • OK [expected TIMEOUT] /trusted-types/trusted-types-navigation.html?06-10 (#37920)
    • PASS [expected TIMEOUT] subtest: Navigate a frame via anchor with javascript:-urls w/ default policy in report-only mode.
    • FAIL [expected NOTRUN] subtest: Navigate a window via anchor 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 anchor 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!\""
      

  • CRASH [expected OK] /trusted-types/trusted-types-reporting-for-Document-execCommand.html
  • CRASH [expected OK] /wasm/webapi/esm-integration/worklet-import-source-phase.tentative.https.html
  • 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[41050] |0.0029951613396406174 - -0.42100346088409424| = 0.42399862222373486 > 0.0038986 expected -0.42100346088409424 +/- 0.0038986 but got 0.0029951613396406174
      

  • OK /webxr/xrSession_features_deviceSupport.https.html (#24357)
    • FAIL [expected PASS] subtest: Immersive XRSession requests with no supported device should reject

      assert_unreached: Should have rejected: undefined Reached unreachable code
      

Stable unexpected results that are known to be intermittent (32)
  • TIMEOUT /FileAPI/url/url-in-tags-revoke.window.html (#19978)
    • PASS [expected TIMEOUT] subtest: Fetching a blob URL immediately before revoking it works in <script> tags.
  • OK /IndexedDB/idbcursor-continuePrimaryKey-exceptions.any.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/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/idbrequest-onupgradeneeded.any.html (#38895)
    • PASS [expected FAIL] subtest: transaction oncomplete ordering relative to open request onsuccess
  • OK /IndexedDB/idbrequest-onupgradeneeded.any.worker.html (#38971)
    • PASS [expected FAIL] subtest: transaction oncomplete ordering relative to open request onsuccess
  • 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 "() => {
            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] subtest: IDBCursor update() method with throwing/invalid keys

      assert_throws_exactly: throwing getter should rethrow during clone function "() => {
            cursor.update(value);
          }" threw object "TypeError: cursor.update 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 "() => {
            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] subtest: IDBCursor update() method with throwing/invalid keys

      assert_throws_exactly: throwing getter should rethrow during clone function "() => {
            cursor.update(value);
          }" threw object "TypeError: cursor.update 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
      

  • TIMEOUT /content-security-policy/inheritance/location-reload.html (#38983)
    • PASS [expected FAIL] subtest: location.reload() of empty iframe.
  • 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 "38.3166666666667px"
      

    • FAIL [expected PASS] subtest: @font-face override update with appended sheet 2

      assert_equals: expected "80px" but got "38.3166666666667px"
      

  • OK /fetch/api/redirect/redirect-keepalive.https.any.html (#32153)
    • PASS [expected FAIL] subtest: [keepalive][iframe][load] mixed content redirect
  • 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: HTTP failure: client error (SendRequest)"
      

  • OK [expected ERROR] /fetch/fetch-later/quota/same-origin-iframe/accumulated-oversized-payload.https.window.html (#41705)
  • 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-origin destination
    • PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy same-site destination
    • PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy cross-site destination
  • CRASH [expected OK] /fetch/metadata/generated/element-iframe.https.sub.html (#40341)
  • ERROR [expected OK] /fetch/metadata/window-open.https.sub.html (#40339)
  • OK [expected ERROR] /focus/focus-event-after-switching-iframes.sub.html (#40368)
  • 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)
    • FAIL [expected PASS] subtest: Multiple history traversals, last would be aborted

      assert_array_equals: Pages opened during history navigation expected property 1 to be 5 but got 3 (expected array [6, 5] got [6, 3])
      

  • OK /html/browsers/history/the-history-interface/traverse_the_history_5.html (#21383)
    • FAIL [expected PASS] subtest: Multiple history traversals, last would be aborted

      assert_array_equals: Pages opened during history navigation expected property 1 to be 5 but got 3 (expected array [6, 5] got [6, 3])
      

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

      assert_equals: expected Element node <div autofocus=""></div> but got Element node <body></body>
      

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

      assert_equals: expected Element node <input autofocus=""></input> but got Element node <body><div autofocus=""></div><input autofocus=""></body>
      

    • 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 /html/semantics/forms/form-submission-0/multipart-formdata.window.html (#28725)
    • PASS [expected FAIL] subtest: multipart/form-data: Basic File test (formdata event)
  • OK /html/semantics/scripting-1/the-script-element/execution-timing/077.html (#22139)
    • PASS [expected FAIL] subtest: adding several types of scripts through the DOM and removing some of them confuses scheduler
  • FAIL [expected PASS] /png/apng/acTL-plays-one.html (#41218)
  • OK /preload/prefetch-document.html (#37210)
    • PASS [expected FAIL] subtest: different-site document prefetch with 'as=document' should not be consumed
  • OK /preload/preload-error.sub.html (#37177)
    • PASS [expected FAIL] subtest: CORS-error (image): main
    • PASS [expected FAIL] subtest: CSP-error (image): main
    • PASS [expected FAIL] subtest: CORS-error (style): main
    • PASS [expected FAIL] subtest: CSP-error (style): main
    • PASS [expected FAIL] subtest: MIME-blocked (script): main
  • 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
  • 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
      

Stable unexpected results (17)
  • OK /css/css-color/parsing/color-computed-color-mix-function.html
    • PASS [expected FAIL] subtest: Property color value 'color-mix(in oklch, hsl(0 100% 100%), blue)'
  • OK /css/css-display/display-contents-blockify-dynamic.html
    • PASS [expected FAIL] subtest: Dynamic changes to displayfromgridtoblockshould cause children to get de-blockified despite being children ofdisplay: contents elements
    • PASS [expected FAIL] subtest: Dynamic changes to displayfromblocktogridshould cause children to get blockified despite being children ofdisplay: contents elements
  • PASS [expected FAIL] /css/css-fonts/rcap-in-monospace.html
  • PASS [expected FAIL] /css/css-fonts/rch-in-monospace.html
  • PASS [expected FAIL] /css/css-fonts/rex-in-monospace.html
  • PASS [expected FAIL] /css/css-fonts/ric-in-monospace.html
  • PASS [expected FAIL] /css/css-overflow/overflow-clip-margin-mul-column-border-box.html
  • PASS [expected FAIL] /css/css-overflow/overflow-clip-margin-mul-column-content-box.html
  • PASS [expected FAIL] /css/css-overflow/overflow-clip-margin-visual-box-and-value.html
  • PASS [expected FAIL] /css/css-overflow/overflow-clip-margin-visual-box.html
  • OK /css/css-overflow/overflow-no-interpolation.html
    • PASS [expected FAIL] subtest: CSS Transitions with transition-behavior:allow-discrete: property <overflow-clip-margin> from [initial] to [123px] at (-0.3) should be [initial]
    • PASS [expected FAIL] subtest: CSS Transitions with transition-property:all and transition-behavor:allow-discrete: property <overflow-clip-margin> from [initial] to [123px] at (-0.3) should be [initial]
    • PASS [expected FAIL] subtest: CSS Animations: property <overflow-clip-margin> from [initial] to [123px] at (-0.3) should be [initial]
  • OK /css/css-overflow/parsing/overflow-clip-margin-computed.html
    • PASS [expected FAIL] subtest: Property overflow-clip-margin value 'content-box'
    • PASS [expected FAIL] subtest: Property overflow-clip-margin value 'content-box 0px'
    • PASS [expected FAIL] subtest: Property overflow-clip-margin value 'content-box 10px'
    • PASS [expected FAIL] subtest: Property overflow-clip-margin value '10px content-box'
    • PASS [expected FAIL] subtest: Property overflow-clip-margin value 'padding-box'
    • PASS [expected FAIL] subtest: Property overflow-clip-margin value 'padding-box 0px'
    • PASS [expected FAIL] subtest: Property overflow-clip-margin value 'padding-box 10px'
    • PASS [expected FAIL] subtest: Property overflow-clip-margin value '10px padding-box'
    • PASS [expected FAIL] subtest: Property overflow-clip-margin value 'border-box'
    • PASS [expected FAIL] subtest: Property overflow-clip-margin value 'border-box 0px'
    • And 2 more unexpected results...
  • OK /css/css-overflow/parsing/overflow-clip-margin.html
    • PASS [expected FAIL] subtest: e.style['overflow-clip-margin'] = "content-box" should set the property value
    • PASS [expected FAIL] subtest: e.style['overflow-clip-margin'] = "content-box 10px" should set the property value
    • PASS [expected FAIL] subtest: e.style['overflow-clip-margin'] = "10px content-box" should set the property value
    • PASS [expected FAIL] subtest: e.style['overflow-clip-margin'] = "0px content-box" should set the property value
    • PASS [expected FAIL] subtest: e.style['overflow-clip-margin'] = "padding-box" should set the property value
    • PASS [expected FAIL] subtest: e.style['overflow-clip-margin'] = "padding-box 0px" should set the property value
    • PASS [expected FAIL] subtest: e.style['overflow-clip-margin'] = "padding-box 10px" should set the property value
    • PASS [expected FAIL] subtest: e.style['overflow-clip-margin'] = "10px padding-box" should set the property value
    • PASS [expected FAIL] subtest: e.style['overflow-clip-margin'] = "border-box" should set the property value
    • PASS [expected FAIL] subtest: e.style['overflow-clip-margin'] = "border-box 0px" should set the property value
    • And 2 more unexpected results...
  • OK /css/css-values/rcap-invalidation.html
    • PASS [expected FAIL] subtest: CSS Values and Units Test: rcap invalidation
  • OK /css/css-values/rch-invalidation.html
    • PASS [expected FAIL] subtest: CSS Values and Units Test: rch invalidation
  • OK /css/css-values/rex-invalidation.html
    • PASS [expected FAIL] subtest: CSS Values and Units Test: rex invalidation
  • OK /css/css-values/ric-invalidation.html
    • PASS [expected FAIL] subtest: CSS Values and Units Test: ric invalidation

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⚠️ Try run (#21016916331) failed!

@Loirooriol Loirooriol marked this pull request as ready for review January 15, 2026 10:14
@servo-highfive servo-highfive added the S-awaiting-review There is new code that needs to be reviewed. label Jan 15, 2026
@Loirooriol Loirooriol added the T-linux-wpt Do a try run of the WPT label Jan 15, 2026
@Loirooriol Loirooriol requested a review from nicoburns January 15, 2026 10:14
@github-actions github-actions bot removed the T-linux-wpt Do a try run of the WPT label Jan 15, 2026
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🔨 Triggering try run (#21027621277) for Linux (WPT)

@servo-highfive servo-highfive removed the S-awaiting-review There is new code that needs to be reviewed. label Jan 15, 2026
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Test results for linux-wpt from try job (#21027621277):

Flaky unexpected result (42)
  • OK /FileAPI/file/send-file-form-utf-8.html
    • FAIL [expected PASS] subtest: Upload file-for-upload-in-form-☺😂.txt (windows-1252) in UTF-8 form

      assert_greater_than: file-for-upload-in-form-☺😂.txt: multipart form data must have at least 3 lines: "" expected a number greater than 2 but got 0
      

  • CRASH [expected OK] /FileAPI/url/url-format.any.html
  • OK /FileAPI/url/url-with-fetch.any.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: Blob URL store error: InvalidFileID"
      

  • OK /IndexedDB/idbfactory-databases-opaque-origin.html
    • FAIL [expected PASS] subtest: IDBFactory.databases() in non-sandboxed iframe should not reject

      assert_equals: IDBFactory.databases() should not reject expected "no exception" but got "OperationError"
      

  • OK /IndexedDB/idbfactory-open-error-properties.any.html
    • PASS [expected FAIL] subtest: Properties of error event from failed open()
  • OK /IndexedDB/idbfactory-open-error-properties.any.worker.html
    • PASS [expected FAIL] subtest: Properties of error event from failed open()
  • OK /_mozilla/webxr/create_session.https.html
    • FAIL [expected PASS] subtest: create_session

      can't access property "simulateDeviceConnection", navigator.xr.test is undefined
      

  • OK /_mozilla/webxr/obtain_frame.https.html
    • FAIL [expected PASS] subtest: obtain_frame

      promise_test: Unhandled rejection with value: object "TypeError: can't access property "simulateDeviceConnection", navigator.xr.test is undefined"
      

  • ERROR [expected TIMEOUT] /_mozilla/webxr/sessionavailable.https.html
  • CRASH [expected OK] /_webgl/conformance/textures/image_bitmap_from_image/tex-2d-luminance_alpha-luminance_alpha-unsigned_byte.html
  • OK /_webgl/conformance/textures/misc/texture-upload-size.html (#21770)
    • PASS [expected FAIL] subtest: WebGL test #85
    • PASS [expected FAIL] subtest: WebGL test #87
    • PASS [expected FAIL] subtest: WebGL test #89
    • PASS [expected FAIL] subtest: WebGL test #91
    • FAIL [expected PASS] subtest: WebGL test #93

      assert_true: Texture was smaller than the expected size 2x2 expected true got false
      

    • FAIL [expected PASS] subtest: WebGL test #95

      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 #97

      assert_true: Texture was smaller than the expected size 2x2 expected true got false
      

    • FAIL [expected PASS] subtest: WebGL test #99

      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
      

  • OK /beacon/beacon-basic.https.window.html (#41723)
    • FAIL [expected PASS] subtest: Payload size restriction should be accumulated: type = blob

      assert_false: expected false got true
      

  • 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.
  • TIMEOUT /content-security-policy/inheritance/location-reload.html (#38983)
    • PASS [expected FAIL] subtest: location.reload() of empty iframe.
  • 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-fonts/generic-family-keywords-001.html (#37467)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(fangsong)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(kai)
  • OK /css/css-fonts/variations/font-weight-matching.html (#38577)
    • FAIL [expected PASS] subtest: Test @font-face matching for weight 250

      assert_approx_equals: @font-face should be mapped to CSSTest Weights 800. expected 90 +/- 2 but got 180
      

    • FAIL [expected PASS] subtest: Test @font-face matching for weight 399

      assert_approx_equals: @font-face should be mapped to CSSTest Weights 800. expected 90 +/- 2 but got 180
      

    • FAIL [expected PASS] subtest: Test @font-face matching for weight 400

      assert_approx_equals: @font-face should be mapped to CSSTest Weights 700. expected 90 +/- 2 but got 180
      

    • FAIL [expected PASS] subtest: Test @font-face matching for weight 420

      assert_approx_equals: @font-face should be mapped to CSSTest Weights 600. expected 90 +/- 2 but got 180
      

    • FAIL [expected PASS] subtest: Test @font-face matching for weight 470

      assert_approx_equals: @font-face should be mapped to CSSTest Weights 300. expected 90 +/- 2 but got 180
      

    • FAIL [expected PASS] subtest: Test @font-face matching for weight 500

      assert_approx_equals: @font-face should be mapped to CSSTest Weights 300. expected 90 +/- 2 but got 180
      

  • OK /custom-elements/form-associated/ElementInternals-setFormValue.html (#29174)
    • PASS [expected FAIL] subtest: Single value - empty name exists
    • PASS [expected FAIL] subtest: Newline normalization - \r\n in name (urlencoded)
  • ERROR /fetch/metadata/generated/serviceworker.https.sub.html (#36247)
    • PASS [expected FAIL] subtest: sec-fetch-site - Same origin, no options - registration
  • ERROR [expected OK] /fetch/metadata/window-open.https.sub.html (#40339)
  • OK [expected ERROR] /focus/focus-event-after-switching-iframes.sub.html (#40368)
  • OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html (#28691)
    • PASS [expected FAIL] subtest: load event does not fire on window.open('about:blank')
  • OK /html/browsers/history/the-history-interface/traverse_the_history_5.html (#21383)
    • FAIL [expected PASS] subtest: Multiple history traversals, last would be aborted

      assert_array_equals: Pages opened during history navigation expected property 1 to be 5 but got 3 (expected array [6, 5] got [6, 3])
      

  • CRASH [expected OK] /html/canvas/element/canvas-host/2d.canvas.host.size.attributes.setAttribute.whitespace.html
  • 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
      

  • OK [expected TIMEOUT] /html/semantics/embedded-content/media-elements/src_object_blob.html (#40340)
    • PASS [expected TIMEOUT] subtest: HTMLMediaElement.srcObject blob
  • TIMEOUT [expected OK] /html/semantics/embedded-content/media-elements/track/track-element/track-remove-by-setting-innerHTML.html
    • TIMEOUT [expected PASS] subtest: Removing a track by setting video.innerHTML doesn't crash

      Test timed out
      

  • 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/forms/form-submission-0/text-plain.window.html (#28687)
    • FAIL [expected PASS] subtest: text/plain: Basic test (formdata event)

      assert_equals: expected "basic=test\r\n" but got ""
      

    • PASS [expected FAIL] subtest: text/plain: 0x00 in value (normal form)
    • PASS [expected FAIL] subtest: text/plain: 0x00 in filename (formdata event)
  • OK [expected ERROR] /html/user-activation/no-activation-thru-escape-key.html (#40343)
  • CRASH [expected OK] /imagebitmap-renderingcontext/context-creation.html
  • CRASH [expected OK] /resource-timing/render-blocking-status-link.html (#41664)
  • TIMEOUT /resource-timing/test_resource_timing.html (#25720)
    • PASS [expected FAIL] subtest: PerformanceEntry has correct name, initiatorType, startTime, and duration (img)
  • OK /touch-events/single-tap-when-touchend-listener-use-sync-xhr.html (#41175)
    • PASS [expected FAIL] subtest: Click event should be fired when touchend opens synchronous XHR
  • CRASH [expected OK] /trusted-types/Node-multiple-arguments.html
  • CRASH [expected OK] /trusted-types/eval-function-constructor.html
  • TIMEOUT /trusted-types/trusted-types-navigation.html?06-10 (#37920)
    • PASS [expected FAIL] subtest: Navigate a frame via anchor with javascript:-urls in report-only mode.
  • OK [expected TIMEOUT] /trusted-types/trusted-types-navigation.html?26-30 (#38807)
    • PASS [expected TIMEOUT] subtest: Navigate a window via form-submission with javascript:-urls in report-only mode.
    • PASS [expected NOTRUN] subtest: Navigate a window via form-submission with javascript:-urls w/ default policy in report-only mode.
    • PASS [expected NOTRUN] subtest: Navigate a frame via form-submission with javascript:-urls in enforcing mode.
    • PASS [expected NOTRUN] subtest: Navigate a frame via form-submission with javascript:-urls w/ default policy in enforcing mode.
  • CRASH [expected ERROR] /wasm/webapi/invalid-code.any.sharedworker.html
  • CRASH [expected OK] /workers/WorkerNavigator_onLine.htm
  • CRASH [expected OK] /workers/interfaces/WorkerUtils/importScripts/006.html
Stable unexpected results that are known to be intermittent (27)
  • TIMEOUT /FileAPI/url/url-in-tags-revoke.window.html (#19978)
    • PASS [expected TIMEOUT] subtest: Fetching a blob URL immediately before revoking it works in <script> tags.
  • OK /IndexedDB/idbcursor-continuePrimaryKey-exceptions.any.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/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/idbrequest-onupgradeneeded.any.html (#38895)
    • PASS [expected FAIL] subtest: transaction oncomplete ordering relative to open request onsuccess
  • OK /IndexedDB/idbrequest-onupgradeneeded.any.worker.html (#38971)
    • PASS [expected FAIL] subtest: transaction oncomplete ordering relative to open request onsuccess
  • 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 "() => {
            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] subtest: IDBCursor update() method with throwing/invalid keys

      assert_throws_exactly: throwing getter should rethrow during clone function "() => {
            cursor.update(value);
          }" threw object "TypeError: cursor.update 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 "() => {
            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] subtest: IDBCursor update() method with throwing/invalid keys

      assert_throws_exactly: throwing getter should rethrow during clone function "() => {
            cursor.update(value);
          }" threw object "TypeError: cursor.update is not a function" but we expected it to throw object "getter: throwing from getter"
      

  • CRASH [expected OK] /IndexedDB/worker-termination-aborts-upgrade.window.html (#41918)
  • 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
      

  • CRASH [expected PASS] /_mozilla/shadow-dom/move-element-with-ua-shadow-tree-crash.html (#39473)
  • 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 "38.3166666666667px"
      

    • FAIL [expected PASS] subtest: @font-face override update with appended sheet 2

      assert_equals: expected "80px" but got "38.3166666666667px"
      

  • OK /fetch/api/redirect/redirect-keepalive.https.any.html (#32153)
    • PASS [expected FAIL] subtest: [keepalive][iframe][load] mixed content redirect
  • 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
    • PASS [expected FAIL] subtest: sec-fetch-storage-access - Not sent to non-trustworthy cross-site destination
  • 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)
    • FAIL [expected PASS] subtest: Multiple history traversals, last would be aborted

      assert_array_equals: Pages opened during history navigation expected property 1 to be 5 but got 3 (expected array [6, 5] got [6, 3])
      

  • TIMEOUT /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
    • TIMEOUT [expected PASS] 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: 0x00 in name (normal form)
    • PASS [expected FAIL] subtest: multipart/form-data: 0x00 in value (formdata event)
  • OK /html/semantics/scripting-1/the-script-element/execution-timing/077.html (#22139)
    • PASS [expected FAIL] subtest: adding several types of scripts through the DOM and removing some of them confuses scheduler
  • FAIL [expected PASS] /png/apng/acTL-plays-one.html (#41218)
  • OK /preload/prefetch-document.html (#37210)
    • PASS [expected FAIL] subtest: different-site document prefetch with 'as=document' should not be consumed
  • OK /preload/preload-error.sub.html (#37177)
    • PASS [expected FAIL] subtest: CORS-error (image): main
    • PASS [expected FAIL] subtest: CSP-error (image): main
    • PASS [expected FAIL] subtest: CORS-error (style): main
    • PASS [expected FAIL] subtest: CSP-error (style): main
    • PASS [expected FAIL] subtest: MIME-blocked (script): main
  • 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
  • OK [expected TIMEOUT] /trusted-types/trusted-types-navigation.html?31-35 (#38034)
    • PASS [expected TIMEOUT] 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!\""
      

  • 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
      

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✨ Try run (#21027621277) succeeded.

@servo-highfive servo-highfive added the S-awaiting-review There is new code that needs to be reviewed. label Jan 15, 2026
@Loirooriol Loirooriol enabled auto-merge January 15, 2026 10:52
@Loirooriol Loirooriol added this pull request to the merge queue Jan 15, 2026
@servo-highfive servo-highfive added the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Jan 15, 2026
Merged via the queue into servo:main with commit a5752da Jan 15, 2026
32 checks passed
@Loirooriol Loirooriol deleted the stylo-2026-01-01 branch January 15, 2026 11:48
@servo-highfive servo-highfive removed the S-awaiting-merge The PR is in the process of compiling and running tests on the automated CI. label Jan 15, 2026
github-merge-queue bot pushed a commit that referenced this pull request Feb 9, 2026
This continues #41916

Changelog:
- Upstream:
servo/stylo@360787f...7cd2a17
- Servo fixups:
servo/stylo@e4d50e9...d9831d4

Stylo tracking issue: servo/stylo#305

In particular, this adds support for `alignment-baseline` and
`baseline-shift`, and turns `vertical-align` into a shorthand of them.
This also introduces `vertical-align: center`.

Testing: Various tests improve. Some internal tests are updated because
they were wrong. And some fail because we don't support presentation
attributes on SVG elements.

---------

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