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Update to SpiderMonkey 137. #37077

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@jdm jdm commented May 22, 2025

Incorporates the updates from servo/mozjs#584.

Testing: Existing WPT coverage is enough.
Fixes: Part of #36258

@jdm jdm added the T-linux-wpt Do a try run of the WPT label May 22, 2025
@github-actions github-actions bot removed the T-linux-wpt Do a try run of the WPT label May 22, 2025
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🔨 Triggering try run (#15178398665) for Linux (WPT)

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⚠️ Try run (#15178398665) failed.

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jdm commented May 22, 2025

I am.very pleased about the WPT results: https://github.com/jdm/servo/actions/runs/15178679132

jdm added 3 commits June 19, 2025 00:27
@jdm
Update to SpiderMonkey 137.
cb23dff 
Signed-off-by: Josh Matthews <josh@joshmatthews.net>
@jdm
tmp: Force source build for mozjs.
0cb268a 
Signed-off-by: Josh Matthews <josh@joshmatthews.net>
@jdm
Update to latest mozjs changes.
f8ea8c5
@jdm jdm added the T-full Do a full try run label Jun 19, 2025
@github-actions github-actions bot removed the T-full Do a full try run label Jun 19, 2025
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🔨 Triggering try run (#15749464530) for Linux (Unit Tests, WPT, Bencher), MacOS (Unit Tests), Windows (Unit Tests), Android, OpenHarmony, Lint

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github-actions bot commented Jun 19, 2025 •
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🐰 Bencher Report

Branchmain
TestbedHUAWEI Mate 60 Pro

⚠️ WARNING: No Threshold found!

Without a Threshold, no Alerts will ever be generated.

Click here to create a new Threshold
For more information, see the Threshold documentation.
To only post results if a Threshold exists, set the --ci-only-thresholds flag.

Click to view all benchmark results
BenchmarkLatencymilliseconds (ms)MemoryBytes
E2E/https://www.google.com/JS/gc-heap/admin📈 view plot
⚠️ NO THRESHOLD		24,224.00
E2E/https://www.google.com/JS/gc-heap/decommitted📈 view plot
⚠️ NO THRESHOLD		552,960.00
E2E/https://www.google.com/JS/gc-heap/unused📈 view plot
⚠️ NO THRESHOLD		63,616.00
E2E/https://www.google.com/JS/gc-heap/used📈 view plot
⚠️ NO THRESHOLD		407,776.00
E2E/https://www.google.com/JS/malloc-heap📈 view plot
⚠️ NO THRESHOLD		3,939,659.00
E2E/https://www.google.com/JS/non-heap📈 view plot
⚠️ NO THRESHOLD		262,144.00
E2E/https://www.google.com/LayoutThread/box-tree📈 view plot
⚠️ NO THRESHOLD		101,488.00
E2E/https://www.google.com/LayoutThread/display-list📈 view plot
⚠️ NO THRESHOLD		0.00
E2E/https://www.google.com/LayoutThread/font-context📈 view plot
⚠️ NO THRESHOLD		4,040.00
E2E/https://www.google.com/LayoutThread/fragment-tree📈 view plot
⚠️ NO THRESHOLD		112.00
E2E/https://www.google.com/LayoutThread/stylist📈 view plot
⚠️ NO THRESHOLD		5,264.00
E2E/https://www.google.com/Load📈 view plot
⚠️ NO THRESHOLD		475.79 ms
E2E/https://www.google.com/Resident📈 view plot
⚠️ NO THRESHOLD		187,431,321.00
E2E/https://www.google.com/image-cache📈 view plot
⚠️ NO THRESHOLD		35,328.00
E2E/https://www.servo.org/Load📈 view plot
⚠️ NO THRESHOLD		718.37 ms
E2E/https://www.servo.org/Resident📈 view plot
⚠️ NO THRESHOLD		266,475,929.00
🐰 View full continuous benchmarking report in Bencher

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github-actions bot commented Jun 19, 2025 •
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🐰 Bencher Report

Branch37077/PR
Testbedubuntu-22.04

⚠️ WARNING: No Threshold found!

Without a Threshold, no Alerts will ever be generated.

Click here to create a new Threshold
For more information, see the Threshold documentation.
To only post results if a Threshold exists, set the --ci-only-thresholds flag.

Click to view all benchmark results
BenchmarkFile Sizemegabytes (MB)Latencymicroseconds (µs)Throughputoperations / second (ops/s)scoreMeasure (units)
Dromaeo/dom📈 view plot
⚠️ NO THRESHOLD		646.97 ops/s
Dromaeo/dom-attr📈 view plot
⚠️ NO THRESHOLD		4,365.05 ops/s
Dromaeo/dom-attr/element_expando📈 view plot
⚠️ NO THRESHOLD		75,797.80 ops/s
Dromaeo/dom-attr/element_expando = value📈 view plot
⚠️ NO THRESHOLD		20,421.00 ops/s
Dromaeo/dom-attr/element_property📈 view plot
⚠️ NO THRESHOLD		19,385.60 ops/s
Dromaeo/dom-attr/element_property = value📈 view plot
⚠️ NO THRESHOLD		83.86 ops/s
Dromaeo/dom-attr/getAttribute📈 view plot
⚠️ NO THRESHOLD		34,289.20 ops/s
Dromaeo/dom-attr/setAttribute📈 view plot
⚠️ NO THRESHOLD		80.17 ops/s
Dromaeo/dom-modify📈 view plot
⚠️ NO THRESHOLD		62.44 ops/s
Dromaeo/dom-modify/appendChild📈 view plot
⚠️ NO THRESHOLD		36.51 ops/s
Dromaeo/dom-modify/cloneNode📈 view plot
⚠️ NO THRESHOLD		28.83 ops/s
Dromaeo/dom-modify/createElement📈 view plot
⚠️ NO THRESHOLD		435.90 ops/s
Dromaeo/dom-modify/createTextNode📈 view plot
⚠️ NO THRESHOLD		144.38 ops/s
Dromaeo/dom-modify/innerHTML📈 view plot
⚠️ NO THRESHOLD		9.89 ops/s
Dromaeo/dom-modify/insertBefore📈 view plot
⚠️ NO THRESHOLD		90.42 ops/s
Dromaeo/dom-query📈 view plot
⚠️ NO THRESHOLD		1,455.87 ops/s
Dromaeo/dom-query/getElementById📈 view plot
⚠️ NO THRESHOLD		592.88 ops/s
Dromaeo/dom-query/getElementById (not in document)📈 view plot
⚠️ NO THRESHOLD		852.80 ops/s
Dromaeo/dom-query/getElementsByName📈 view plot
⚠️ NO THRESHOLD		0.12 ops/s
Dromaeo/dom-query/getElementsByName (not in document)📈 view plot
⚠️ NO THRESHOLD		0.19 ops/s
Dromaeo/dom-query/getElementsByTagName (not in document)📈 view plot
⚠️ NO THRESHOLD		94,620.80 ops/s
Dromaeo/dom-query/getElementsByTagName(*)📈 view plot
⚠️ NO THRESHOLD		72,545.80 ops/s
Dromaeo/dom-query/getElementsByTagName(a)📈 view plot
⚠️ NO THRESHOLD		72,541.00 ops/s
Dromaeo/dom-query/getElementsByTagName(div)📈 view plot
⚠️ NO THRESHOLD		71,683.40 ops/s
Dromaeo/dom-query/getElementsByTagName(p)📈 view plot
⚠️ NO THRESHOLD		72,083.20 ops/s
Dromaeo/dom-traverse📈 view plot
⚠️ NO THRESHOLD		251.45 ops/s
Dromaeo/dom-traverse/childNodes📈 view plot
⚠️ NO THRESHOLD		245.50 ops/s
Dromaeo/dom-traverse/firstChild📈 view plot
⚠️ NO THRESHOLD		221.29 ops/s
Dromaeo/dom-traverse/lastChild📈 view plot
⚠️ NO THRESHOLD		139.29 ops/s
Dromaeo/dom-traverse/nextSibling📈 view plot
⚠️ NO THRESHOLD		361.91 ops/s
Dromaeo/dom-traverse/previousSibling📈 view plot
⚠️ NO THRESHOLD		367.07 ops/s
Speedometer/Charts-observable-plot📈 view plot
⚠️ NO THRESHOLD		143.72 µs
Speedometer/Charts-observable-plot/Dotted📈 view plot
⚠️ NO THRESHOLD		30.59 µs
Speedometer/Charts-observable-plot/Dotted/Async📈 view plot
⚠️ NO THRESHOLD		1.46 µs
Speedometer/Charts-observable-plot/Dotted/Sync📈 view plot
⚠️ NO THRESHOLD		29.13 µs
Speedometer/Charts-observable-plot/Stacked by 20📈 view plot
⚠️ NO THRESHOLD		57.36 µs
Speedometer/Charts-observable-plot/Stacked by 20/Async📈 view plot
⚠️ NO THRESHOLD		2.04 µs
Speedometer/Charts-observable-plot/Stacked by 20/Sync📈 view plot
⚠️ NO THRESHOLD		55.32 µs
Speedometer/Charts-observable-plot/Stacked by 6📈 view plot
⚠️ NO THRESHOLD		55.77 µs
Speedometer/Charts-observable-plot/Stacked by 6/Async📈 view plot
⚠️ NO THRESHOLD		1.33 µs
Speedometer/Charts-observable-plot/Stacked by 6/Sync📈 view plot
⚠️ NO THRESHOLD		54.43 µs
Speedometer/Geomean📈 view plot
⚠️ NO THRESHOLD		201.16 µs
Speedometer/Iteration-0-Total📈 view plot
⚠️ NO THRESHOLD		361.48 µs
Speedometer/Iteration-1-Total📈 view plot
⚠️ NO THRESHOLD		311.90 µs
Speedometer/Iteration-2-Total📈 view plot
⚠️ NO THRESHOLD		310.89 µs
Speedometer/Iteration-3-Total📈 view plot
⚠️ NO THRESHOLD		307.59 µs
Speedometer/Iteration-4-Total📈 view plot
⚠️ NO THRESHOLD		307.05 µs
Speedometer/Iteration-5-Total📈 view plot
⚠️ NO THRESHOLD		305.39 µs
Speedometer/Iteration-6-Total📈 view plot
⚠️ NO THRESHOLD		303.53 µs
Speedometer/Iteration-7-Total📈 view plot
⚠️ NO THRESHOLD		312.99 µs
Speedometer/Iteration-8-Total📈 view plot
⚠️ NO THRESHOLD		310.86 µs
Speedometer/Iteration-9-Total📈 view plot
⚠️ NO THRESHOLD		317.07 µs
Speedometer/Score📈 view plot
⚠️ NO THRESHOLD		4.99 units
Speedometer/TodoMVC-Angular📈 view plot
⚠️ NO THRESHOLD		178.79 µs
Speedometer/TodoMVC-Angular/Adding100Items📈 view plot
⚠️ NO THRESHOLD		101.59 µs
Speedometer/TodoMVC-Angular/Adding100Items/Async📈 view plot
⚠️ NO THRESHOLD		9.65 µs
Speedometer/TodoMVC-Angular/Adding100Items/Sync📈 view plot
⚠️ NO THRESHOLD		91.94 µs
Speedometer/TodoMVC-Angular/CompletingAllItems📈 view plot
⚠️ NO THRESHOLD		44.23 µs
Speedometer/TodoMVC-Angular/CompletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		9.54 µs
Speedometer/TodoMVC-Angular/CompletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		34.69 µs
Speedometer/TodoMVC-Angular/DeletingAllItems📈 view plot
⚠️ NO THRESHOLD		32.98 µs
Speedometer/TodoMVC-Angular/DeletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		3.04 µs
Speedometer/TodoMVC-Angular/DeletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		29.94 µs
Speedometer/TodoMVC-JavaScript-ES5📈 view plot
⚠️ NO THRESHOLD		675.21 µs
Speedometer/TodoMVC-JavaScript-ES5/Adding100Items📈 view plot
⚠️ NO THRESHOLD		515.32 µs
Speedometer/TodoMVC-JavaScript-ES5/Adding100Items/Async📈 view plot
⚠️ NO THRESHOLD		17.36 µs
Speedometer/TodoMVC-JavaScript-ES5/Adding100Items/Sync📈 view plot
⚠️ NO THRESHOLD		497.97 µs
Speedometer/TodoMVC-JavaScript-ES5/CompletingAllItems📈 view plot
⚠️ NO THRESHOLD		103.39 µs
Speedometer/TodoMVC-JavaScript-ES5/CompletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		22.00 µs
Speedometer/TodoMVC-JavaScript-ES5/CompletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		81.39 µs
Speedometer/TodoMVC-JavaScript-ES5/DeletingAllItems📈 view plot
⚠️ NO THRESHOLD		56.50 µs
Speedometer/TodoMVC-JavaScript-ES5/DeletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		3.19 µs
Speedometer/TodoMVC-JavaScript-ES5/DeletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		53.31 µs
Speedometer/TodoMVC-JavaScript-ES6-Webpack📈 view plot
⚠️ NO THRESHOLD		1,033.39 µs
Speedometer/TodoMVC-JavaScript-ES6-Webpack/Adding100Items📈 view plot
⚠️ NO THRESHOLD		825.28 µs
Speedometer/TodoMVC-JavaScript-ES6-Webpack/Adding100Items/Async📈 view plot
⚠️ NO THRESHOLD		17.52 µs
Speedometer/TodoMVC-JavaScript-ES6-Webpack/Adding100Items/Sync📈 view plot
⚠️ NO THRESHOLD		807.76 µs
Speedometer/TodoMVC-JavaScript-ES6-Webpack/CompletingAllItems📈 view plot
⚠️ NO THRESHOLD		127.15 µs
Speedometer/TodoMVC-JavaScript-ES6-Webpack/CompletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		10.14 µs
Speedometer/TodoMVC-JavaScript-ES6-Webpack/CompletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		117.01 µs
Speedometer/TodoMVC-JavaScript-ES6-Webpack/DeletingAllItems📈 view plot
⚠️ NO THRESHOLD		80.96 µs
Speedometer/TodoMVC-JavaScript-ES6-Webpack/DeletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		3.30 µs
Speedometer/TodoMVC-JavaScript-ES6-Webpack/DeletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		77.66 µs
Speedometer/TodoMVC-Preact📈 view plot
⚠️ NO THRESHOLD		73.48 µs
Speedometer/TodoMVC-Preact/Adding100Items📈 view plot
⚠️ NO THRESHOLD		36.13 µs
Speedometer/TodoMVC-Preact/Adding100Items/Async📈 view plot
⚠️ NO THRESHOLD		31.35 µs
Speedometer/TodoMVC-Preact/Adding100Items/Sync📈 view plot
⚠️ NO THRESHOLD		4.78 µs
Speedometer/TodoMVC-Preact/CompletingAllItems📈 view plot
⚠️ NO THRESHOLD		27.92 µs
Speedometer/TodoMVC-Preact/CompletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		20.38 µs
Speedometer/TodoMVC-Preact/CompletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		7.54 µs
Speedometer/TodoMVC-Preact/DeletingAllItems📈 view plot
⚠️ NO THRESHOLD		9.43 µs
Speedometer/TodoMVC-Preact/DeletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		6.37 µs
Speedometer/TodoMVC-Preact/DeletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		3.06 µs
Speedometer/TodoMVC-React📈 view plot
⚠️ NO THRESHOLD		166.84 µs
Speedometer/TodoMVC-React-Redux📈 view plot
⚠️ NO THRESHOLD		177.34 µs
Speedometer/TodoMVC-React-Redux/Adding100Items📈 view plot
⚠️ NO THRESHOLD		77.93 µs
Speedometer/TodoMVC-React-Redux/Adding100Items/Async📈 view plot
⚠️ NO THRESHOLD		8.99 µs
Speedometer/TodoMVC-React-Redux/Adding100Items/Sync📈 view plot
⚠️ NO THRESHOLD		68.95 µs
Speedometer/TodoMVC-React-Redux/CompletingAllItems📈 view plot
⚠️ NO THRESHOLD		63.11 µs
Speedometer/TodoMVC-React-Redux/CompletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		8.46 µs
Speedometer/TodoMVC-React-Redux/CompletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		54.65 µs
Speedometer/TodoMVC-React-Redux/DeletingAllItems📈 view plot
⚠️ NO THRESHOLD		36.29 µs
Speedometer/TodoMVC-React-Redux/DeletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		2.89 µs
Speedometer/TodoMVC-React-Redux/DeletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		33.40 µs
Speedometer/TodoMVC-React/Adding100Items📈 view plot
⚠️ NO THRESHOLD		81.83 µs
Speedometer/TodoMVC-React/Adding100Items/Async📈 view plot
⚠️ NO THRESHOLD		13.31 µs
Speedometer/TodoMVC-React/Adding100Items/Sync📈 view plot
⚠️ NO THRESHOLD		68.52 µs
Speedometer/TodoMVC-React/CompletingAllItems📈 view plot
⚠️ NO THRESHOLD		53.77 µs
Speedometer/TodoMVC-React/CompletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		8.96 µs
Speedometer/TodoMVC-React/CompletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		44.81 µs
Speedometer/TodoMVC-React/DeletingAllItems📈 view plot
⚠️ NO THRESHOLD		31.23 µs
Speedometer/TodoMVC-React/DeletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		3.06 µs
Speedometer/TodoMVC-React/DeletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		28.17 µs
Speedometer/TodoMVC-Svelte📈 view plot
⚠️ NO THRESHOLD		70.23 µs
Speedometer/TodoMVC-Svelte/Adding100Items📈 view plot
⚠️ NO THRESHOLD		33.39 µs
Speedometer/TodoMVC-Svelte/Adding100Items/Async📈 view plot
⚠️ NO THRESHOLD		25.46 µs
Speedometer/TodoMVC-Svelte/Adding100Items/Sync📈 view plot
⚠️ NO THRESHOLD		7.93 µs
Speedometer/TodoMVC-Svelte/CompletingAllItems📈 view plot
⚠️ NO THRESHOLD		25.66 µs
Speedometer/TodoMVC-Svelte/CompletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		18.50 µs
Speedometer/TodoMVC-Svelte/CompletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		7.16 µs
Speedometer/TodoMVC-Svelte/DeletingAllItems📈 view plot
⚠️ NO THRESHOLD		11.18 µs
Speedometer/TodoMVC-Svelte/DeletingAllItems/Async📈 view plot
⚠️ NO THRESHOLD		7.75 µs
Speedometer/TodoMVC-Svelte/DeletingAllItems/Sync📈 view plot
⚠️ NO THRESHOLD		3.44 µs
linux-release📈 view plot
⚠️ NO THRESHOLD		167.27 MB
🐰 View full continuous benchmarking report in Bencher

jdm added 2 commits June 19, 2025 00:57
@jdm
Use newer NDK and force github runners for macOS.
b83a9ee 
Signed-off-by: Josh Matthews <josh@joshmatthews.net>
@jdm
Tidy.
842626c 
Signed-off-by: Josh Matthews <josh@joshmatthews.net>
@github-actions GitHub Actions
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Test results for linux-wpt from try job (#15749464530):

Flaky unexpected result (16)
  • FAIL [expected PASS] /_mozilla/css/dirty_viewport.html (#13731)
  • TIMEOUT [expected OK] /_mozilla/mozilla/window_resizeTo.html (#36741)
    • TIMEOUT [expected PASS] subtest: Popup onresize event fires after resizeTo

      Test timed out

  • 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-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)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(khmer-mul)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(nastaliq)
  • TIMEOUT /fetch/metadata/generated/css-images.sub.tentative.html (#29047)
    • TIMEOUT [expected PASS] subtest: background-image sec-fetch-user - Not sent to non-trustworthy same-origin destination

      Test timed out

  • ERROR /fetch/metadata/generated/serviceworker.https.sub.html (#36247)
    • PASS [expected FAIL] subtest: sec-fetch-site - Same origin, no options - registration
  • 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/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html (#28697)
    • FAIL [expected PASS] subtest: aElement.click() before the load event must NOT replace

      assert_equals: expected "http://web-platform.test:8000/common/blank.html?thereplacement" but got "http://web-platform.test:8000/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/code-injector.html?pipe=sub(none)&amp;code=%0A%20%20%20%20const%20a%20%3D%20document.createElement(%22a%22)%3B%0A%20%20%20%20a.href%20%3D%20%22%2Fcommon%2Fblank.html%3Fthereplacement%22%3B%0A%20%20%20%20document.currentScript.before(a)%3B%0A%20%20%20%20a.click()%3B%0A%20%20"

  • OK /html/browsers/history/the-history-interface/traverse_the_history_3.html (#21383)
    • PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
  • CRASH [expected OK] /html/canvas/element/manual/imagebitmap/createImageBitmap-premultiplyAlpha.html
  • TIMEOUT [expected OK] /html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.html (#30970)
  • 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

  • CRASH [expected TIMEOUT] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html (#22154)
  • CRASH [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html (#24066)
  • TIMEOUT [expected OK] /resource-timing/nested-context-navigations-iframe.html (#24311)
    • TIMEOUT [expected PASS] subtest: Test that cross-site iframe navigations are not observable by the parent, even after history navigations by the parent

      Test timed out

    • 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 ERROR] /workers/constructors/Worker/Worker-constructor.html (#22991)
Stable unexpected results that are known to be intermittent (22)
  • 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"

  • FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
  • OK /_webgl/conformance/textures/misc/texture-upload-size.html (#21770)
    • FAIL [expected PASS] subtest: WebGL test #61

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

    • FAIL [expected PASS] subtest: WebGL test #63

      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 #65

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

    • FAIL [expected PASS] subtest: WebGL test #67

      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 /css/css-align/blocks/align-content-block-002.html (#37361)
    • PASS [expected FAIL] subtest: .test 1: start
    • PASS [expected FAIL] subtest: .test 4: baseline
    • PASS [expected FAIL] subtest: .test 6: flex-start
    • PASS [expected FAIL] subtest: .test 8: unsafe start
    • PASS [expected FAIL] subtest: .test 11: safe start
    • PASS [expected FAIL] subtest: .test 15: space-between
    • PASS [expected FAIL] subtest: .test 17: normal
  • OK /css/css-fonts/variations/at-font-face-font-matching.html (#20684)
    • FAIL [expected PASS] subtest: Matching font-style: 'oblique 0deg' should prefer 'oblique 30deg 60deg' over 'oblique 40deg 50deg'

      assert_equals: Unexpected font on test element expected 487 but got 532

  • FAIL [expected PASS] /css/css-grid/grid-items/grid-auto-margin-and-replaced-item-001.html (#37162)
  • 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 - Cross-site
  • OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-nosrc.html (#34819)
    • PASS [expected FAIL] subtest: form submission
  • OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-src-aboutblank-navigate-immediately.html (#29048)
    • PASS [expected FAIL] subtest: Navigating to a different document with link click
    • PASS [expected FAIL] subtest: Navigating to a different document with form submission
  • OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-iframe-contentWindow.html (#28681)
    • PASS [expected FAIL] subtest: load &amp; pageshow events do not fire on contentWindow of &lt;iframe&gt; element created with src=''
    • PASS [expected FAIL] subtest: load &amp; pageshow events do not fire on contentWindow of &lt;iframe&gt; element created with src='about:blank'
  • 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/browsing-context-names/duplicate-name-order.html (#34623)
    • FAIL [expected PASS] subtest: Duplicate name lookup order

      assert_equals: subtree first expected "ChildA" but got "SiblingA"

  • 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;/body&gt;

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

      assert_equals: expected Element node &lt;area autofocus="" href="/common/blank.html"&gt;&lt;/area&gt; but got Element node &lt;body&gt;
&lt;img src="/media/poster.png" usemap="#map"&gt;
&lt;map n...

  • OK /html/semantics/embedded-content/the-video-element/intrinsic_sizes.htm (#37173)
    • FAIL [expected PASS] subtest: default object size after src is removed

      assert_equals: expected "300px" but got "320px"

  • OK /navigation-timing/test-navigation-type-reload.html (#33334)
    • FAIL [expected PASS] subtest: Reload domComplete &gt; Original domComplete

      assert_true: Reload domComplete &gt; Original domComplete expected true got false

    • PASS [expected FAIL] subtest: Reload domContentLoadedEventStart &gt; Original domContentLoadedEventStart
    • PASS [expected FAIL] subtest: Reload domInteractive &gt; Original domInteractive
    • PASS [expected FAIL] subtest: Reload fetchStart &gt; Original fetchStart
    • FAIL [expected PASS] subtest: Reload loadEventEnd &gt; Original loadEventEnd

      assert_true: Reload loadEventEnd &gt; Original loadEventEnd expected true got false

    • FAIL [expected PASS] subtest: Reload loadEventStart &gt; Original loadEventStart

      assert_true: Reload loadEventStart &gt; Original loadEventStart expected true got false

  • OK [expected TIMEOUT] /performance-timeline/navigation-id-detached-frame.tentative.html (#34773)
    • PASS [expected TIMEOUT] subtest: The navigation_id getter does not crash a window of detached frame
  • OK /preload/preload-error.sub.html (#37177)
    • PASS [expected FAIL] subtest: success (script): main
    • PASS [expected FAIL] subtest: 404 (script): main
    • FAIL [expected PASS] subtest: CORS (script): main

      assert_greater_than: http://not-web-platform.test:8000/preload/resources/dummy.js?pipe=header%28Access-Control-Allow-Origin%2C*%29&amp;label=script should be loaded expected a number greater than 0 but got 0

    • FAIL [expected PASS] subtest: success (xhr): main

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

    • PASS [expected FAIL] subtest: CORS (xhr): main
    • FAIL [expected PASS] subtest: MIME-error (script): main

      assert_greater_than: http://web-platform.test:8000/preload/resources/dummy.css?pipe=header%28Content-Type%2Ctext%2Fnotjavascript%29&amp;label=script should be loaded expected a number greater than 0 but got 0

  • OK /webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html (#22849)
    • FAIL [expected PASS] subtest: X Stitched sine-wave buffers at sample rate 43800 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...] with an element-wise tolerance of {"absoluteThreshold":0.0038986,"relativeThreshold":0}. Index Actual Expected AbsError RelError Test threshold [14741] -6.2911736367285420e-13 4.5811137557029724e-1 4.5811137557092635e-1 1.0000000000013733e+0 3.8985999999999999e-3 [14742] 3.7735444307327271e-1 5.1289927959442139e-1 1.3554483652114868e-1 2.6427184032765982e-1 3.8985999999999999e-3 Max AbsError of 4.5811137557092635e-1 at index of 14741. Max RelError of 1.0000000000013733e+0 at index of 14741. 

      assert_true: expected true got false

    • FAIL [expected PASS] subtest: X SNR (49.74066048758399 dB) is not greater than or equal to 65.737. Got 49.74066048758399.

      assert_true: expected true got false

  • TIMEOUT [expected OK] /webmessaging/with-ports/017.html (#24486)
    • TIMEOUT [expected PASS] subtest: origin of the script that invoked the method, about:blank

      Test timed out

  • TIMEOUT [expected OK] /webmessaging/without-ports/017.html (#24486)
    • TIMEOUT [expected PASS] subtest: origin of the script that invoked the method, about:blank

      Test timed out

  • TIMEOUT [expected OK] /webmessaging/without-ports/018.html (#24485)
    • TIMEOUT [expected PASS] subtest: origin of the script that invoked the method, javascript:

      Test timed out

  • OK [expected ERROR] /webxr/render_state_update.https.html (#27535)
Stable unexpected results (29)
  • OK /FileAPI/blob/Blob-constructor.any.html
    • PASS [expected FAIL] subtest: Passing a Float16Array as element of the blobParts array should work.
  • OK /FileAPI/blob/Blob-constructor.any.worker.html
    • PASS [expected FAIL] subtest: Passing a Float16Array as element of the blobParts array should work.
  • OK /WebCryptoAPI/getRandomValues.any.html
    • PASS [expected FAIL] subtest: Float16 arrays
  • OK /WebCryptoAPI/getRandomValues.any.worker.html
    • PASS [expected FAIL] subtest: Float16 arrays
  • OK /encoding/encodeInto.any.html
    • PASS [expected FAIL] subtest: Invalid encodeInto() destination: Float16Array, backed by: ArrayBuffer
  • OK /encoding/encodeInto.any.worker.html
    • PASS [expected FAIL] subtest: Invalid encodeInto() destination: Float16Array, backed by: ArrayBuffer
  • OK /fetch/api/basic/request-headers.any.html
    • PASS [expected FAIL] subtest: Fetch with POST with Float16Array body
  • OK /fetch/api/basic/request-headers.any.worker.html
    • PASS [expected FAIL] subtest: Fetch with POST with Float16Array body
  • OK /fetch/api/basic/request-upload.any.html
    • PASS [expected FAIL] subtest: Fetch with POST with Float16Array body
  • OK /fetch/api/basic/request-upload.any.worker.html
    • PASS [expected FAIL] subtest: Fetch with POST with Float16Array body
  • CRASH [expected OK] /html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html
  • OK [expected CRASH] /streams/piping/then-interception.any.html
    • FAIL [expected PASS] subtest: piping should not be observable

      assert_array_equals: nothing should have been intercepted lengths differ, expected array [] length 0, got ["a"] length 1

    • FAIL [expected PASS] subtest: tee should not be observable

      assert_array_equals: nothing should have been intercepted lengths differ, expected array [] length 0, got ["a"] length 1

  • OK [expected CRASH] /streams/piping/then-interception.any.worker.html
    • FAIL [expected PASS] subtest: piping should not be observable

      assert_array_equals: nothing should have been intercepted lengths differ, expected array [] length 0, got ["a"] length 1

    • FAIL [expected PASS] subtest: tee should not be observable

      assert_array_equals: nothing should have been intercepted lengths differ, expected array [] length 0, got ["a"] length 1

  • OK /trusted-types/script-enforcement-008.https.html
    • PASS [expected FAIL] subtest: script-src CSP directive is properly set.
  • OK /trusted-types/script-enforcement-009.https.html
    • PASS [expected FAIL] subtest: script-src CSP directive is properly set.
  • OK /wasm/core/utf8-custom-section-id.wast.js.html
    • PASS [expected FAIL] subtest: #2 Test that WebAssembly compilation fails
    • PASS [expected FAIL] subtest: #3 Test that WebAssembly compilation fails
    • PASS [expected FAIL] subtest: #4 Test that WebAssembly compilation fails
    • PASS [expected FAIL] subtest: #5 Test that WebAssembly compilation fails
    • PASS [expected FAIL] subtest: #6 Test that WebAssembly compilation fails
    • PASS [expected FAIL] subtest: #7 Test that WebAssembly compilation fails
    • PASS [expected FAIL] subtest: #8 Test that WebAssembly compilation fails
    • PASS [expected FAIL] subtest: #9 Test that WebAssembly compilation fails
    • PASS [expected FAIL] subtest: #10 Test that WebAssembly compilation fails
    • PASS [expected FAIL] subtest: #11 Test that WebAssembly compilation fails
    • And 342 more unexpected results...
  • OK [expected ERROR] /wasm/jsapi/js-string/basic.any.html
  • OK [expected ERROR] /wasm/jsapi/js-string/basic.any.worker.html
  • OK /wasm/jsapi/js-string/constants.any.html
    • PASS [expected FAIL] subtest: constants
    • PASS [expected FAIL] subtest: constants 1
    • PASS [expected FAIL] subtest: constants 2
    • PASS [expected FAIL] subtest: constants 3
    • PASS [expected FAIL] subtest: constants 4
    • PASS [expected FAIL] subtest: constants 5
    • PASS [expected FAIL] subtest: constants 6
    • PASS [expected FAIL] subtest: constants 7
    • PASS [expected FAIL] subtest: constants 8
    • PASS [expected FAIL] subtest: constants 9
    • And 30 more unexpected results...
  • OK /wasm/jsapi/js-string/constants.any.worker.html
    • PASS [expected FAIL] subtest: constants
    • PASS [expected FAIL] subtest: constants 1
    • PASS [expected FAIL] subtest: constants 2
    • PASS [expected FAIL] subtest: constants 3
    • PASS [expected FAIL] subtest: constants 4
    • PASS [expected FAIL] subtest: constants 5
    • PASS [expected FAIL] subtest: constants 6
    • PASS [expected FAIL] subtest: constants 7
    • PASS [expected FAIL] subtest: constants 8
    • PASS [expected FAIL] subtest: constants 9
    • And 30 more unexpected results...
  • OK /wasm/jsapi/js-string/imports.any.html
    • PASS [expected FAIL] subtest: imports
  • OK /wasm/jsapi/js-string/imports.any.worker.html
    • PASS [expected FAIL] subtest: imports
  • OK /webidl/ecmascript-binding/es-exceptions/DOMException-is-error.any.html
    • PASS [expected FAIL] subtest: DOMException-is-error
  • OK /webidl/ecmascript-binding/es-exceptions/DOMException-is-error.any.worker.html
    • PASS [expected FAIL] subtest: DOMException-is-error
  • OK /websockets/Send-binary-arraybufferview-float16.any.html?default
    • PASS [expected FAIL] subtest: Send binary data on a WebSocket - ArrayBufferView - Float16Array - Connection should be closed
  • OK /websockets/Send-binary-arraybufferview-float16.any.html?wss
    • PASS [expected FAIL] subtest: Send binary data on a WebSocket - ArrayBufferView - Float16Array - Connection should be closed
  • OK /websockets/Send-binary-arraybufferview-float16.any.worker.html?default
    • PASS [expected FAIL] subtest: Send binary data on a WebSocket - ArrayBufferView - Float16Array - Connection should be closed
  • OK /websockets/Send-binary-arraybufferview-float16.any.worker.html?wss
    • PASS [expected FAIL] subtest: Send binary data on a WebSocket - ArrayBufferView - Float16Array - Connection should be closed
  • OK /workers/semantics/interface-objects/001.worker.html
    • PASS [expected FAIL] subtest: The Float16Array interface object should be exposed.

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⚠️ Try run (#15749464530) failed.

@jdm
Update WPT results.
e31497e 
Signed-off-by: Josh Matthews <josh@joshmatthews.net>
@jdm jdm added the T-full Do a full try run label Jun 19, 2025
@github-actions github-actions bot removed the T-full Do a full try run label Jun 19, 2025
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🔨 Triggering try run (#15749931750) for Linux (Unit Tests, WPT, Bencher), MacOS (Unit Tests), Windows (Unit Tests), Android, OpenHarmony, Lint

@jdm
Update NDK requirements.
f39eddf 
Signed-off-by: Josh Matthews <josh@joshmatthews.net>
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Test results for linux-wpt from try job (#15749931750):

Flaky unexpected result (17)
  • 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 occurred"

  • 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 /_mozilla/mozilla/getBoundingClientRect.html
    • FAIL [expected PASS] subtest: getBoundingClientRect 1

      assert_equals: expected 62 but got 60.35

  • 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-001.html (#37467)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(kai)
    • PASS [expected FAIL] subtest: @font-face matching for quoted and unquoted generic(khmer-mul)
  • FAIL [expected PASS] /css/css-sizing/dynamic-available-size-iframe.html (#31559)
  • TIMEOUT [expected OK] /html/browsers/browsing-the-web/navigating-across-documents/005.html (#27062)
  • OK /html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html (#29066)
    • FAIL [expected PASS] subtest: Check execution order from nested timeout

      assert_equals: Expected nested setTimeout to run second expected true but got false

    • FAIL [expected PASS] subtest: Check execution order on load handler

      assert_equals: Expected onload to run first expected false but got true

  • OK /html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/iframe-nosrc.html (#34819)
    • PASS [expected FAIL] subtest: link click
    • PASS [expected FAIL] subtest: form submission
  • OK /html/browsers/history/the-history-interface/traverse_the_history_2.html (#21383)
    • PASS [expected FAIL] subtest: Multiple history traversals, last would be aborted
  • TIMEOUT [expected OK] /html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.html (#30970)
  • OK [expected TIMEOUT] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html (#22667)
    • FAIL [expected TIMEOUT] subtest: Check that popups from a sandboxed iframe escape the sandbox if allow-popups-to-escape-sandbox is used

      assert_equals: It came from a sandboxed iframe expected "null" but got "http://web-platform.test:8000"

  • OK [expected TIMEOUT] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html (#24066)
    • FAIL [expected NOTRUN] subtest: Check that popups from a sandboxed iframe do not escape the sandbox

      assert_equals: It came from a sandboxed iframe expected "null" but got "http://web-platform.test:8000"

  • OK /html/semantics/embedded-content/the-video-element/intrinsic_sizes.htm (#37173)
    • FAIL [expected PASS] subtest: default object size after src is removed

      assert_equals: expected "300px" but got "320px"

  • 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()
  • TIMEOUT [expected OK] /webmessaging/with-ports/018.html (#24485)
    • TIMEOUT [expected PASS] subtest: origin of the script that invoked the method, javascript:

      Test timed out

  • ERROR [expected OK] /workers/semantics/run-a-worker/003.html (#22765)
Stable unexpected results that are known to be intermittent (23)
  • FAIL [expected PASS] /_mozilla/mozilla/sslfail.html (#10760)
  • TIMEOUT [expected OK] /_mozilla/mozilla/window_resizeTo.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)
    • FAIL [expected PASS] subtest: WebGL test #61

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

    • FAIL [expected PASS] subtest: WebGL test #63

      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 #65

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

    • FAIL [expected PASS] subtest: WebGL test #67

      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 /css/css-align/blocks/align-content-block-002.html (#37361)
    • FAIL [expected PASS] subtest: .test 1: start

      assert_equals: 
&lt;div class="test" style="align-content: start" title="start"&gt;
    &lt;div class="in-flow" data-offset-y="15"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;START&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="0"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="0"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 0 but got -1

    • FAIL [expected PASS] subtest: .test 4: baseline

      assert_equals: 
&lt;div class="test" style="align-content: baseline" title="baseline"&gt;
    &lt;div class="in-flow" data-offset-y="15"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;BASELINE&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="0"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="0"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 0 but got -1

    • FAIL [expected PASS] subtest: .test 6: flex-start

      assert_equals: 
&lt;div class="test" style="align-content: flex-start" title="flex-start"&gt;
    &lt;div class="in-flow" data-offset-y="15"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;FLEX-START&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="0"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="0"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 0 but got -1

    • FAIL [expected PASS] subtest: .test 8: unsafe start

      assert_equals: 
&lt;div class="test" style="align-content: unsafe start" title="unsafe start"&gt;
    &lt;div class="in-flow" data-offset-y="15"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;UNSAFE START&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="0"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="0"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 0 but got -1

    • FAIL [expected PASS] subtest: .test 11: safe start

      assert_equals: 
&lt;div class="test" style="align-content: safe start" title="safe start"&gt;
    &lt;div class="in-flow" data-offset-y="15"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;SAFE START&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="0"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="0"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 0 but got -1

    • FAIL [expected PASS] subtest: .test 15: space-between

      assert_equals: 
&lt;div class="test" style="align-content: space-between" title="space-between"&gt;
    &lt;div class="in-flow" data-offset-y="15"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;SPACE-BETWEEN&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="0"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="0"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 0 but got -1

    • FAIL [expected PASS] subtest: .test 17: normal

      assert_equals: 
&lt;div class="test" style="align-content: normal" title="normal"&gt;
    &lt;div class="in-flow" data-offset-y="10"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;NORMAL&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="-5"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="-5"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected -5 but got -6

  • OK /css/css-align/blocks/align-content-block-003.html (#37360)
    • FAIL [expected PASS] subtest: .test 1: start

      assert_equals: 
&lt;div class="test" style="align-content: start" title="start"&gt;
    &lt;div class="in-flow" data-offset-y="35"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;START&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="20"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="20"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 20 but got 19

    • FAIL [expected PASS] subtest: .test 2: center

      assert_equals: 
&lt;div class="test" style="align-content: center" title="center"&gt;
    &lt;div class="in-flow" data-offset-y="35"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;CENTER&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="20"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="20"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 20 but got 19

    • FAIL [expected PASS] subtest: .test 3: end

      assert_equals: 
&lt;div class="test" style="align-content: end" title="end"&gt;
    &lt;div class="in-flow" data-offset-y="35"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;END&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="20"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="20"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 20 but got 19

    • FAIL [expected PASS] subtest: .test 4: baseline

      assert_equals: 
&lt;div class="test" style="align-content: baseline" title="baseline"&gt;
    &lt;div class="in-flow" data-offset-y="35"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;BASELINE&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="20"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="20"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 20 but got 19

    • FAIL [expected PASS] subtest: .test 5: last baseline

      assert_equals: 
&lt;div class="test" style="align-content: last baseline" title="last baseline"&gt;
    &lt;div class="in-flow" data-offset-y="35"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;LAST BASELINE&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="20"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="20"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 20 but got 19

    • FAIL [expected PASS] subtest: .test 6: flex-start

      assert_equals: 
&lt;div class="test" style="align-content: flex-start" title="flex-start"&gt;
    &lt;div class="in-flow" data-offset-y="35"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;FLEX-START&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="20"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="20"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 20 but got 19

    • FAIL [expected PASS] subtest: .test 7: flex-end

      assert_equals: 
&lt;div class="test" style="align-content: flex-end" title="flex-end"&gt;
    &lt;div class="in-flow" data-offset-y="35"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;FLEX-END&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="20"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="20"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 20 but got 19

    • FAIL [expected PASS] subtest: .test 8: unsafe start

      assert_equals: 
&lt;div class="test" style="align-content: unsafe start" title="unsafe start"&gt;
    &lt;div class="in-flow" data-offset-y="35"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;UNSAFE START&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="20"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="20"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 20 but got 19

    • FAIL [expected PASS] subtest: .test 11: safe start

      assert_equals: 
&lt;div class="test" style="align-content: safe start" title="safe start"&gt;
    &lt;div class="in-flow" data-offset-y="35"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;SAFE START&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="20"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="20"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 20 but got 19

    • FAIL [expected PASS] subtest: .test 12: safe center

      assert_equals: 
&lt;div class="test" style="align-content: safe center" title="safe center"&gt;
    &lt;div class="in-flow" data-offset-y="35"&gt;&lt;/div&gt;
    &lt;div class="in-flow"&gt;
      &lt;span class="label"&gt;SAFE CENTER&lt;/span&gt;
      &lt;span class="abspos" data-offset-y="20"&gt;ABS&lt;/span&gt;
      &lt;span class="relpos" data-offset-y="20"&gt;REL&lt;/span&gt;
      &lt;div class="overflow"&gt;OVERFLOW&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
offsetTop expected 20 but got 19

    • And 5 more unexpected results...
  • FAIL [expected PASS] /css/css-grid/grid-items/grid-auto-margin-and-replaced-item-001.html (#37162)
  • ERROR [expected TIMEOUT] /fetch/fetch-later/quota/same-origin-iframe/max-payload.tentative.https.window.html (#35210)
  • OK /fetch/metadata/generated/css-font-face.https.sub.tentative.html (#32732)
    • PASS [expected FAIL] subtest: sec-fetch-storage-access - Same 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 cross-site destination
  • 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/initial-empty-document/load-pageshow-events-iframe-contentWindow.html (#28681)
    • PASS [expected FAIL] subtest: load &amp; pageshow events do not fire on contentWindow of &lt;iframe&gt; element created with src=''
  • OK /html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html (#28697)
    • FAIL [expected PASS] subtest: aElement.click() before the load event must NOT replace

      assert_equals: expected "http://web-platform.test:8000/common/blank.html?thereplacement" but got "http://web-platform.test:8000/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/resources/code-injector.html?pipe=sub(none)&amp;code=%0A%20%20%20%20const%20a%20%3D%20document.createElement(%22a%22)%3B%0A%20%20%20%20a.href%20%3D%20%22%2Fcommon%2Fblank.html%3Fthereplacement%22%3B%0A%20%20%20%20document.currentScript.before(a)%3B%0A%20%20%20%20a.click()%3B%0A%20%20"

  • 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 lengths differ, expected array [6, 5] length 2, got [6, 3, 3] length 3

  • OK /html/browsers/windows/browsing-context-names/duplicate-name-order.html (#34623)
    • FAIL [expected PASS] subtest: Duplicate name lookup order

      assert_equals: subtree first expected "ChildA" but got "SiblingA"

  • TIMEOUT /html/interaction/focus/the-autofocus-attribute/supported-elements.html (#24145)
    • TIMEOUT [expected NOTRUN] subtest: Host element with delegatesFocus should support autofocus

      Test timed out

  • 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"

  • TIMEOUT [expected OK] /html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html (#24066)
    • NOTRUN [expected FAIL] subtest: Check that popups from a sandboxed iframe do not escape the sandbox
  • OK /navigation-timing/test-navigation-type-reload.html (#33334)
    • PASS [expected FAIL] subtest: Reload domContentLoadedEventEnd &gt; Original domContentLoadedEventEnd
  • OK [expected TIMEOUT] /performance-timeline/navigation-id-detached-frame.tentative.html (#34773)
    • PASS [expected TIMEOUT] subtest: The navigation_id getter does not crash a window of detached frame
  • OK /preload/preload-error.sub.html (#37177)
    • FAIL [expected PASS] subtest: 404 (style): main

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

    • FAIL [expected PASS] subtest: success (xhr): main

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

    • PASS [expected FAIL] subtest: 404 (xhr): main
    • FAIL [expected PASS] subtest: MIME-error (script): main

      assert_greater_than: http://web-platform.test:8000/preload/resources/dummy.css?pipe=header%28Content-Type%2Ctext%2Fnotjavascript%29&amp;label=script should be loaded expected a number greater than 0 but got 0

  • OK /webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html (#22849)
    • FAIL [expected PASS] subtest: X Stitched sine-wave buffers at sample rate 43800 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...] with an element-wise tolerance of {"absoluteThreshold":0.0038986,"relativeThreshold":0}. Index Actual Expected AbsError RelError Test threshold [14741] -2.4015002107407649e-27 4.5811137557029724e-1 4.5811137557029724e-1 1.0000000000000000e+0 3.8985999999999999e-3 [14742] 3.7735444307327271e-1 5.1289927959442139e-1 1.3554483652114868e-1 2.6427184032765982e-1 3.8985999999999999e-3 Max AbsError of 4.5811137557029724e-1 at index of 14741. Max RelError of 1.0000000000000000e+0 at index of 14741. 

      assert_true: expected true got false

    • FAIL [expected PASS] subtest: X SNR (49.74066048759468 dB) is not greater than or equal to 65.737. Got 49.74066048759468.

      assert_true: expected true got false

  • TIMEOUT [expected OK] /webmessaging/with-ports/017.html (#24486)
    • TIMEOUT [expected PASS] subtest: origin of the script that invoked the method, about:blank

      Test timed out

  • TIMEOUT [expected OK] /webmessaging/without-ports/017.html (#24486)
    • TIMEOUT [expected PASS] subtest: origin of the script that invoked the method, about:blank

      Test timed out

Stable unexpected results (3)
  • CRASH [expected OK] /html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html
  • OK /trusted-types/script-enforcement-008.https.html
    • PASS [expected FAIL] subtest: script-src CSP directive is properly set.
  • OK /trusted-types/script-enforcement-009.https.html
    • PASS [expected FAIL] subtest: script-src CSP directive is properly set.

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⚠️ Try run (#15749931750) failed.

@jdm
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jdm commented Jun 19, 2025 •
edited
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Replicated the segfault in a WPT test:

0:01.43 TEST_START: /html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html
 0:01.43 WARNING Got command init_succeeded in state running
 0:01.69 pid:95293 Full command: /Users/jdm/src/alt-servo/target/debug/servo --hard-fail -u Servo/wptrunner --ignore-certificate-errors --enable-experimental-web-platform-features -z http://web-platform.test:8000/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html --user-stylesheet /Users/jdm/src/alt-servo/tests/wpt/tests/fonts/ahem.css --pref dom_serviceworker_enabled=true --pref dom_testutils_enabled=true --prefs-file /Users/jdm/src/alt-servo/resources/wpt-prefs.json --certificate-path /Users/jdm/src/alt-servo/tests/wpt/tests/tools/certs/cacert.pem
pid:95293 Caught signal 10 in thread "Script(1,1)"
 0:03.14 pid:95293    0: backtrace::backtrace::libunwind::trace
 0:03.14 pid:95293              at /Users/jdm/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/backtrace-0.3.75/src/backtrace/libunwind.rs:117:9
 0:03.14 pid:95293       backtrace::backtrace::trace_unsynchronized
 0:03.14 pid:95293              at /Users/jdm/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/backtrace-0.3.75/src/backtrace/mod.rs:66:14
 0:03.14 pid:95293    1: <servoshell::backtrace::Print as core::fmt::Debug>::fmt
 0:03.14 pid:95293              at /Users/jdm/src/alt-servo/ports/servoshell/backtrace.rs:65:13
 0:03.15 pid:95293    2: core::fmt::rt::Argument::fmt
 0:03.15 pid:95293              at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/fmt/rt.rs:177:76
 0:03.15 pid:95293       core::fmt::write
 0:03.15 pid:95293              at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/fmt/mod.rs:1440:21
 0:03.15 pid:95293    3: std::io::Write::write_fmt
 0:03.15 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/io/mod.rs:1887:15
 0:03.15 pid:95293    4: servoshell::backtrace::print
 0:03.15 pid:95293              at /Users/jdm/src/alt-servo/ports/servoshell/backtrace.rs:18:5
 0:03.15 pid:95293    5: servoshell::crash_handler::install::handler
 0:03.15 pid:95293              at /Users/jdm/src/alt-servo/ports/servoshell/crash_handler.rs:38:21
 0:03.15 pid:95293    6: __os_alloc_slow
 0:03.15 pid:95293    7: <mozjs::typedarray::ClampedU8 as mozjs::typedarray::TypedArrayElement>::unwrap_array
 0:03.15 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs/src/typedarray.rs:298:17
 0:03.15 pid:95293    8: <mozjs::typedarray::ClampedU8 as mozjs::typedarray::TypedArrayElement>::unwrap_array
 0:03.15 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs/src/typedarray.rs:298:17
 0:03.18 pid:95293    9: mozjs::typedarray::TypedArray<T,S>::from
 0:03.18 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs/src/typedarray.rs:149:29
 0:03.19 pid:95293   10: script::dom::bindings::buffer_source::HeapBufferSource<T>::get_typed_array
 0:03.19 pid:95293              at /Users/jdm/src/alt-servo/components/script/dom/bindings/buffer_source.rs:146:9
 0:03.21 pid:95293   11: script::dom::imagedata::ImageData::new_with_data
 0:03.21 pid:95293              at /Users/jdm/src/alt-servo/components/script/dom/imagedata.rs:81:33
 0:03.21 pid:95293   12: script::dom::imagedata::ImageData::new
 0:03.21 pid:95293              at /Users/jdm/src/alt-servo/components/script/dom/imagedata.rs:63:17
 0:03.23 pid:95293   13: script::canvas_state::CanvasState::get_image_data
 0:03.23 pid:95293              at /Users/jdm/src/alt-servo/components/script/canvas_state.rs:1588:9
 0:03.24 pid:95293   14: <script::dom::canvasrenderingcontext2d::CanvasRenderingContext2D as script_bindings::codegen::GenericBindings::CanvasRenderingContext2DBinding::CanvasRenderingContext2D_Binding::CanvasRenderingContext2DMethods<script::dom::bindings::codegen::DomTypeHolder::DomTypeHolder>>::GetImageData
 0:03.24 pid:95293              at /Users/jdm/src/alt-servo/components/script/dom/canvasrenderingcontext2d.rs:541:9
 0:03.26 pid:95293   15: script_bindings::codegen::GenericBindings::CanvasRenderingContext2DBinding::CanvasRenderingContext2D_Binding::getImageData::{{closure}}::{{closure}}
 0:03.26 pid:95293              at /Users/jdm/src/alt-servo/target/debug/build/script_bindings-d9215f8debe9d190/out/Bindings/CanvasRenderingContext2DBinding.rs:3008:60
 0:03.26 pid:95293   16: script_bindings::codegen::GenericBindings::CanvasRenderingContext2DBinding::CanvasRenderingContext2D_Binding::getImageData::{{closure}}
 0:03.26 pid:95293              at /Users/jdm/src/alt-servo/target/debug/build/script_bindings-d9215f8debe9d190/out/Bindings/CanvasRenderingContext2DBinding.rs:2946:33
 0:03.26 pid:95293   17: core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &mut F>::call_once
 0:03.26 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/ops/function.rs:305:13
 0:03.26 pid:95293   18: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
 0:03.26 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/panic/unwind_safe.rs:272:9
 0:03.26 pid:95293   19: std::panicking::try::do_call
 0:03.26 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:584:40
 0:03.26 pid:95293   20: ___rust_try
 0:03.26 pid:95293   21: std::panicking::try
 0:03.26 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:547:19
 0:03.26 pid:95293       std::panic::catch_unwind
 0:03.26 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panic.rs:358:14
 0:03.26 pid:95293   22: mozjs::panic::wrap_panic
 0:03.26 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs/src/panic.rs:22:11
 0:03.26 pid:95293   23: script_bindings::codegen::GenericBindings::CanvasRenderingContext2DBinding::CanvasRenderingContext2D_Binding::getImageData
 0:03.26 pid:95293              at /Users/jdm/src/alt-servo/target/debug/build/script_bindings-d9215f8debe9d190/out/Bindings/CanvasRenderingContext2DBinding.rs:2946:5
 0:03.27 pid:95293   24: CallJitMethodOp
 0:03.27 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/./src/jsglue.cpp:582:10
 0:03.28 pid:95293   25: script_bindings::utils::generic_call
 0:03.28 pid:95293              at /Users/jdm/src/alt-servo/components/script_bindings/utils.rs:401:5
 0:03.29 pid:95293   26: script_bindings::utils::generic_method
 0:03.29 pid:95293              at /Users/jdm/src/alt-servo/components/script_bindings/utils.rs:421:5
 0:03.36 pid:95293   27: _Z12CallJSNativeP9JSContextPFbS0_jPN2JS5ValueEEN2js10CallReasonERKNS1_8CallArgsE
 0:03.36 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:493:13
 0:03.36 pid:95293       _ZN2js23InternalCallOrConstructEP9JSContextRKN2JS8CallArgsENS_14MaybeConstructENS_10CallReasonE
 0:03.36 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:589:12
 0:03.37 pid:95293   28: _ZL12InternalCallP9JSContextRKN2js13AnyInvokeArgsENS1_10CallReasonE
 0:03.37 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:656:10
 0:03.37 pid:95293       _ZN2js13CallFromStackEP9JSContextRKN2JS8CallArgsENS_10CallReasonE
 0:03.37 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:661:10
 0:03.37 pid:95293       _ZN2js9InterpretEP9JSContextRNS_8RunStateE
 0:03.37 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:3265:16
 0:03.37 pid:95293   29: _ZL31MaybeEnterInterpreterTrampolineP9JSContextRN2js8RunStateE
 0:03.37 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:394:10
 0:03.37 pid:95293       _ZN2js9RunScriptEP9JSContextRNS_8RunStateE
 0:03.37 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:463:13
 0:03.37 pid:95293   30: _ZN2js23InternalCallOrConstructEP9JSContextRKN2JS8CallArgsENS_14MaybeConstructENS_10CallReasonE
 0:03.37 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:621:13
 0:03.37 pid:95293   31: _ZL12InternalCallP9JSContextRKN2js13AnyInvokeArgsENS1_10CallReasonE
 0:03.37 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:656:10
 0:03.38 pid:95293       _ZN2js4CallEP9JSContextN2JS6HandleINS2_5ValueEEES5_RKNS_13AnyInvokeArgsENS2_13MutableHandleIS4_EENS_10CallReasonE
 0:03.38 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:688:8
 0:03.45 pid:95293   32: _ZN2js4CallEP9JSContextN2JS6HandleINS2_5ValueEEES5_S5_NS2_13MutableHandleIS4_EE
 0:03.45 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.h:120:10
 0:03.45 pid:95293       _ZL18PromiseReactionJobP9JSContextjPN2JS5ValueE
 0:03.45 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/builtin/Promise.cpp:2365:10
 0:03.45 pid:95293   33: _Z12CallJSNativeP9JSContextPFbS0_jPN2JS5ValueEEN2js10CallReasonERKNS1_8CallArgsE
 0:03.45 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:493:13
 0:03.45 pid:95293       _ZN2js23InternalCallOrConstructEP9JSContextRKN2JS8CallArgsENS_14MaybeConstructENS_10CallReasonE
 0:03.45 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:589:12
 0:03.45 pid:95293   34: _ZL12InternalCallP9JSContextRKN2js13AnyInvokeArgsENS1_10CallReasonE
 0:03.45 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:656:10
 0:03.45 pid:95293       _ZN2js4CallEP9JSContextN2JS6HandleINS2_5ValueEEES5_RKNS_13AnyInvokeArgsENS2_13MutableHandleIS4_EENS_10CallReasonE
 0:03.45 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/Interpreter.cpp:688:8
 0:03.51 pid:95293   35: _ZN2JS4CallEP9JSContextNS_6HandleINS_5ValueEEES4_RKNS_16HandleValueArrayENS_13MutableHandleIS3_EE
 0:03.51 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/vm/CallAndConstruct.cpp:119:10
 0:03.52 pid:95293   36: mozjs::rust::wrappers::Call
 0:03.52 pid:95293              at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs/src/rust.rs:1180:51
 0:03.54 pid:95293   37: script_bindings::codegen::GenericBindings::PromiseBinding::PromiseJobCallback<D>::Call
 0:03.54 pid:95293              at /Users/jdm/src/alt-servo/target/debug/build/script_bindings-d9215f8debe9d190/out/Bindings/PromiseBinding.rs:51:18
 0:03.54 pid:95293   38: script_bindings::codegen::GenericBindings::PromiseBinding::PromiseJobCallback<D>::Call_
 0:03.54 pid:95293              at /Users/jdm/src/alt-servo/target/debug/build/script_bindings-d9215f8debe9d190/out/Bindings/PromiseBinding.rs:35:18
 0:03.56 pid:95293   39: script::microtask::MicrotaskQueue::checkpoint
 0:03.56 pid:95293              at /Users/jdm/src/alt-servo/components/script/microtask.rs:121:37
 0:03.57 pid:95293   40: script::script_thread::ScriptThread::perform_a_microtask_checkpoint
 0:03.57 pid:95293              at /Users/jdm/src/alt-servo/components/script/script_thread.rs:4019:13
 0:03.57 pid:95293   41: script::script_thread::ScriptThread::handle_msgs
 0:03.57 pid:95293              at /Users/jdm/src/alt-servo/components/script/script_thread.rs:1668:13
 0:03.57 pid:95293   42: script::script_thread::ScriptThread::start
 0:03.57 pid:95293              at /Users/jdm/src/alt-servo/components/script/script_thread.rs:1015:15
 0:03.59 pid:95293   43: <script::script_thread::ScriptThread as script_layout_interface::ScriptThreadFactory>::create::{{closure}}::{{closure}}
 0:03.59 pid:95293              at /Users/jdm/src/alt-servo/components/script/script_thread.rs:448:25
 0:03.60 pid:95293   44: profile_traits::mem::ProfilerChan::run_with_memory_reporting
 0:03.60 pid:95293              at /Users/jdm/src/alt-servo/components/shared/profile/mem.rs:131:9
 0:03.60 pid:95293   45: <script::script_thread::ScriptThread as script_layout_interface::ScriptThreadFactory>::create::{{closure}}
 0:03.60 pid:95293              at /Users/jdm/src/alt-servo/components/script/script_thread.rs:446:17
 0:03.62 pid:95293   46: std::sys::backtrace::__rust_begin_short_backtrace
 0:03.62 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/sys/backtrace.rs:152:18
 0:03.64 pid:95293   47: std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}
 0:03.64 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/mod.rs:564:17
 0:03.65 pid:95293   48: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
 0:03.65 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/panic/unwind_safe.rs:272:9
 0:03.67 pid:95293   49: std::panicking::try::do_call
 0:03.67 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:584:40
 0:03.67 pid:95293   50: ___rust_try
 0:03.67 pid:95293   51: std::panicking::try
 0:03.67 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panicking.rs:547:19
 0:03.67 pid:95293       std::panic::catch_unwind
 0:03.67 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/panic.rs:358:14
 0:03.67 pid:95293       std::thread::Builder::spawn_unchecked_::{{closure}}
 0:03.67 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/std/src/thread/mod.rs:562:30
 0:03.88 pid:95293   52: core::ops::function::FnOnce::call_once{{vtable.shim}}
 0:03.88 pid:95293              at /Users/jdm/.rustup/toolchains/1.85.0-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
 0:03.92 pid:95293   53: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
 0:03.92 pid:95293              at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/alloc/src/boxed.rs:1993:9
 0:03.92 pid:95293       <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
 0:03.92 pid:95293              at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/alloc/src/boxed.rs:1993:9
 0:03.92 pid:95293       std::sys::pal::unix::thread::Thread::new::thread_start
 0:03.92 pid:95293              at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/sys/pal/unix/thread.rs:106:17
 0:03.92 pid:95293   54: __pthread_deallocate
 0:03.94 TEST_END: CRASH, expected OK

And with --debug-mozjs:

0:01.50 TEST_START: /html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html
 0:01.50 WARNING Got command init_succeeded in state running
 0:04.44 pid:99358 Full command: /Users/jdm/src/alt-servo/target/debug/servo --hard-fail -u Servo/wptrunner --ignore-certificate-errors --enable-experimental-web-platform-features -z http://web-platform.test:8000/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html --user-stylesheet /Users/jdm/src/alt-servo/tests/wpt/tests/fonts/ahem.css --pref dom_serviceworker_enabled=true --pref dom_testutils_enabled=true --prefs-file /Users/jdm/src/alt-servo/resources/wpt-prefs.json --certificate-path /Users/jdm/src/alt-servo/tests/wpt/tests/tools/certs/cacert.pem
pid:99358 [99358] Assertion failure: this->flags() == 0, at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/gc/Cell.h:778
 0:04.47 pid:99358 #01: js::gc::CellWithTenuredGCPointer<js::gc::Cell, js::Shape>::headerPtr() const[/Users/jdm/src/alt-servo/target/debug/servo +0x34079b4]
 0:04.47 pid:99358 #02: JSObject::shape() const[/Users/jdm/src/alt-servo/target/debug/servo +0x340791c]
 0:04.47 pid:99358 #03: JSObject::getClass() const[/Users/jdm/src/alt-servo/target/debug/servo +0x3406cdc]
 0:04.48 pid:99358 #04: bool JSObject::is<js::TypedArrayObject>() const[/Users/jdm/src/alt-servo/target/debug/servo +0x34a52f4]
 0:04.48 pid:99358 #05: js::TypedArrayObject* JSObject::maybeUnwrapIf<js::TypedArrayObject>()[/Users/jdm/src/alt-servo/target/debug/servo +0x3a79b1c]
 0:04.48 pid:99358 #06: js::UnwrapUint8ClampedArray(JSObject*)[/Users/jdm/src/alt-servo/target/debug/servo +0x3a7ca48]
 0:04.49 pid:99358 #07: _$LT$mozjs..typedarray..ClampedU8$u20$as$u20$mozjs..typedarray..TypedArrayElement$GT$::unwrap_array::hac6b06fe2c5229b0[/Users/jdm/src/alt-servo/target/debug/servo +0x33ec658]
 0:04.49 pid:99358 #08: mozjs::typedarray::TypedArray$LT$T$C$S$GT$::from::h60526a85a4b9a638[/Users/jdm/src/alt-servo/target/debug/servo +0x236e624]
 0:04.49 pid:99358 #09: script::dom::bindings::buffer_source::HeapBufferSource$LT$T$GT$::get_typed_array::h3a16acd7e09dc2b5[/Users/jdm/src/alt-servo/target/debug/servo +0x11ecc74]
 0:04.49 pid:99358 #10: script::dom::imagedata::ImageData::new_with_data::hb38804c2821ca45b[/Users/jdm/src/alt-servo/target/debug/servo +0x156d710]
 0:04.49 pid:99358 #11: script::dom::imagedata::ImageData::new::hf189019b40a87f62[/Users/jdm/src/alt-servo/target/debug/servo +0x156d638]
 0:04.50 pid:99358 #12: script::canvas_state::CanvasState::get_image_data::he0c0678e1e8b4323[/Users/jdm/src/alt-servo/target/debug/servo +0x1743460]
 0:04.50 pid:99358 #13: _$LT$script..dom..canvasrenderingcontext2d..CanvasRenderingContext2D$u20$as$u20$script_bindings..codegen..GenericBindings..CanvasRenderingContext2DBinding..CanvasRenderingContext2D_Binding..CanvasRenderingContext2DMethods$LT$script..dom..bindings..codegen[/Users/jdm/src/alt-servo/target/debug/servo +0x1cb2aac]
 0:04.50 pid:99358 #14: script_bindings::codegen::GenericBindings::CanvasRenderingContext2DBinding::CanvasRenderingContext2D_Binding::getImageData::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h77c6c00cbe32ddc8[/Users/jdm/src/alt-servo/target/debug/servo +0x1629a08]
 0:04.50 pid:99358 #15: script_bindings::codegen::GenericBindings::CanvasRenderingContext2DBinding::CanvasRenderingContext2D_Binding::getImageData::_$u7b$$u7b$closure$u7d$$u7d$::h6b1d7403c4ee8362[/Users/jdm/src/alt-servo/target/debug/servo +0x1629528]
 0:04.50 pid:99358 #16: core::ops::function::impls::_$LT$impl$u20$core..ops..function..FnOnce$LT$A$GT$$u20$for$u20$$RF$mut$u20$F$GT$::call_once::h3794fc22023cb570[/Users/jdm/src/alt-servo/target/debug/servo +0x33f1e88]
 0:04.51 pid:99358 #17: _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h73750f6a8f6dcde7[/Users/jdm/src/alt-servo/target/debug/servo +0x33ec85c]
 0:04.51 pid:99358 #18: std::panicking::try::do_call::h34bb780c87608c8e[/Users/jdm/src/alt-servo/target/debug/servo +0x33ea474]
 0:04.51 pid:99358 #19: __rust_try[/Users/jdm/src/alt-servo/target/debug/servo +0x33f3364]
 0:04.51 pid:99358 #20: std::panic::catch_unwind::hea3f0e1041a57c46[/Users/jdm/src/alt-servo/target/debug/servo +0x33f1a20]
 0:04.52 pid:99358 #21: mozjs::panic::wrap_panic::he5e7f197aad00cbe[/Users/jdm/src/alt-servo/target/debug/servo +0x33f0358]
 0:04.52 pid:99358 #22: script_bindings::codegen::GenericBindings::CanvasRenderingContext2DBinding::CanvasRenderingContext2D_Binding::getImageData::h29f4b74923ea475e[/Users/jdm/src/alt-servo/target/debug/servo +0x16294d4]
 0:04.52 pid:99358 #23: CallJitMethodOp[/Users/jdm/src/alt-servo/target/debug/servo +0x51b846c]
 0:04.52 pid:99358 #24: script_bindings::utils::generic_call::h354947a4d92d928c[/Users/jdm/src/alt-servo/target/debug/servo +0x32e0920]
 0:04.53 pid:99358 #25: script_bindings::utils::generic_method::hd77fbffe3f8609b7[/Users/jdm/src/alt-servo/target/debug/servo +0x1f0026c]
 0:04.53 pid:99358 #26: CallJSNative(JSContext*, bool (*)(JSContext*, unsigned int, JS::Value*), js::CallReason, JS::CallArgs const&)[/Users/jdm/src/alt-servo/target/debug/servo +0x34505e0]
 0:04.53 pid:99358 #27: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x344ff98]
 0:04.53 pid:99358 #28: InternalCall(JSContext*, js::AnyInvokeArgs const&, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x3450f40]
 0:04.54 pid:99358 #29: js::CallFromStack(JSContext*, JS::CallArgs const&, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x3450d90]
 0:04.54 pid:99358 #30: js::Interpret(JSContext*, js::RunState&)[/Users/jdm/src/alt-servo/target/debug/servo +0x3460480]
 0:04.54 pid:99358 #31: MaybeEnterInterpreterTrampoline(JSContext*, js::RunState&)[/Users/jdm/src/alt-servo/target/debug/servo +0x344f958]
 0:04.54 pid:99358 #32: js::RunScript(JSContext*, js::RunState&)[/Users/jdm/src/alt-servo/target/debug/servo +0x344f3ec]
 0:04.54 pid:99358 #33: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x34501ac]
 0:04.55 pid:99358 #34: InternalCall(JSContext*, js::AnyInvokeArgs const&, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x3450f40]
 0:04.55 pid:99358 #35: js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x34510e8]
 0:04.55 pid:99358 #36: js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::MutableHandle<JS::Value>)[/Users/jdm/src/alt-servo/target/debug/servo +0x3530384]
 0:04.55 pid:99358 #37: PromiseReactionJob(JSContext*, unsigned int, JS::Value*)[/Users/jdm/src/alt-servo/target/debug/servo +0x38d2a94]
 0:04.56 pid:99358 #38: CallJSNative(JSContext*, bool (*)(JSContext*, unsigned int, JS::Value*), js::CallReason, JS::CallArgs const&)[/Users/jdm/src/alt-servo/target/debug/servo +0x34505e0]
 0:04.56 pid:99358 #39: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x344ff98]
 0:04.56 pid:99358 #40: InternalCall(JSContext*, js::AnyInvokeArgs const&, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x3450f40]
 0:04.56 pid:99358 #41: js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x34510e8]
 0:04.57 pid:99358 #42: JS::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::HandleValueArray const&, JS::MutableHandle<JS::Value>)[/Users/jdm/src/alt-servo/target/debug/servo +0x365cd20]
 0:04.57 pid:99358 #43: mozjs::rust::wrappers::Call::h95717679b87203a7[/Users/jdm/src/alt-servo/target/debug/servo +0x2418620]
 0:04.57 pid:99358 #44: script_bindings::codegen::GenericBindings::PromiseBinding::PromiseJobCallback$LT$D$GT$::Call::h8160d9ee66abd42b[/Users/jdm/src/alt-servo/target/debug/servo +0x1c86a00]
 0:04.57 pid:99358 #45: script_bindings::codegen::GenericBindings::PromiseBinding::PromiseJobCallback$LT$D$GT$::Call_::h058cf7974395842f[/Users/jdm/src/alt-servo/target/debug/servo +0x1c86c64]
 0:04.57 pid:99358 #46: script::microtask::MicrotaskQueue::checkpoint::h5f7a448b84fcbdcc[/Users/jdm/src/alt-servo/target/debug/servo +0x2037b78]
 0:04.58 pid:99358 #47: script::script_thread::ScriptThread::perform_a_microtask_checkpoint::h4b477a908702c57f[/Users/jdm/src/alt-servo/target/debug/servo +0x178df6c]
 0:04.58 pid:99358 #48: script::script_thread::ScriptThread::handle_msgs::h13d53a17a49a8c09[/Users/jdm/src/alt-servo/target/debug/servo +0x1778d88]
 0:04.58 pid:99358 #49: script::script_thread::ScriptThread::start::hddeb36b5c134bda8[/Users/jdm/src/alt-servo/target/debug/servo +0x177564c]
 0:04.58 pid:99358 #50: _$LT$script..script_thread..ScriptThread$u20$as$u20$script_layout_interface..ScriptThreadFactory$GT$::create::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h7a422ef48fc3754b[/Users/jdm/src/alt-servo/target/debug/servo +0x2cff01c]
 0:04.58 pid:99358 #51: profile_traits::mem::ProfilerChan::run_with_memory_reporting::h1d2d4a3dd351c87c[/Users/jdm/src/alt-servo/target/debug/servo +0x195952c]
 0:04.59 pid:99358 #52: _$LT$script..script_thread..ScriptThread$u20$as$u20$script_layout_interface..ScriptThreadFactory$GT$::create::_$u7b$$u7b$closure$u7d$$u7d$::h39c080ae39bbe434[/Users/jdm/src/alt-servo/target/debug/servo +0x2cfeeb8]
 0:04.59 pid:99358 #53: std::sys::backtrace::__rust_begin_short_backtrace::h052b999847b8f3d4[/Users/jdm/src/alt-servo/target/debug/servo +0x1d64db4]
 0:04.59 pid:99358 #54: std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hafb4072babfc5e89[/Users/jdm/src/alt-servo/target/debug/servo +0x259a5f4]
 0:04.59 pid:99358 #55: _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::hc202c2c3ff9f5e15[/Users/jdm/src/alt-servo/target/debug/servo +0x2020cdc]
 0:04.60 pid:99358 #56: std::panicking::try::do_call::h224082c61f0f1a79[/Users/jdm/src/alt-servo/target/debug/servo +0x20b5bf8]
 0:04.60 pid:99358 #57: __rust_try[/Users/jdm/src/alt-servo/target/debug/servo +0x259e678]
 0:04.60 pid:99358 #58: std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::ha2b36b6412a76086[/Users/jdm/src/alt-servo/target/debug/servo +0x259974c]
 0:04.60 pid:99358 #59: core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h7ac234a49af00dfe[/Users/jdm/src/alt-servo/target/debug/servo +0x1a8fcc8]
 0:04.63 pid:99358 #60: std::sys::pal::unix::thread::Thread::new::thread_start::h02b173395cbbc15c[/Users/jdm/src/alt-servo/target/debug/servo +0x890a250]
 0:04.63 pid:99358 #61: _pthread_start[/usr/lib/system/libsystem_pthread.dylib +0x72e4]

Weirdly, running ./mach test-wpt /html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html --headless --pref js_mem_gc_zeal_level=2 --pref js_mem_gc_zeal_frequency=1 --timeout-multiplier=20 made it go away.

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sagudev commented Jun 22, 2025

Replicated the segfault in a WPT test:

And with --debug-mozjs:

0:01.50 TEST_START: /html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html
 0:01.50 WARNING Got command init_succeeded in state running
 0:04.44 pid:99358 Full command: /Users/jdm/src/alt-servo/target/debug/servo --hard-fail -u Servo/wptrunner --ignore-certificate-errors --enable-experimental-web-platform-features -z http://web-platform.test:8000/html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html --user-stylesheet /Users/jdm/src/alt-servo/tests/wpt/tests/fonts/ahem.css --pref dom_serviceworker_enabled=true --pref dom_testutils_enabled=true --prefs-file /Users/jdm/src/alt-servo/resources/wpt-prefs.json --certificate-path /Users/jdm/src/alt-servo/tests/wpt/tests/tools/certs/cacert.pem
pid:99358 [99358] Assertion failure: this->flags() == 0, at /Users/jdm/.cargo/git/checkouts/mozjs-95c48a4de670b647/ec7a8ab/mozjs-sys/mozjs/js/src/gc/Cell.h:778
 0:04.47 pid:99358 #01: js::gc::CellWithTenuredGCPointer<js::gc::Cell, js::Shape>::headerPtr() const[/Users/jdm/src/alt-servo/target/debug/servo +0x34079b4]
 0:04.47 pid:99358 #02: JSObject::shape() const[/Users/jdm/src/alt-servo/target/debug/servo +0x340791c]
 0:04.47 pid:99358 #03: JSObject::getClass() const[/Users/jdm/src/alt-servo/target/debug/servo +0x3406cdc]
 0:04.48 pid:99358 #04: bool JSObject::is<js::TypedArrayObject>() const[/Users/jdm/src/alt-servo/target/debug/servo +0x34a52f4]
 0:04.48 pid:99358 #05: js::TypedArrayObject* JSObject::maybeUnwrapIf<js::TypedArrayObject>()[/Users/jdm/src/alt-servo/target/debug/servo +0x3a79b1c]
 0:04.48 pid:99358 #06: js::UnwrapUint8ClampedArray(JSObject*)[/Users/jdm/src/alt-servo/target/debug/servo +0x3a7ca48]
 0:04.49 pid:99358 #07: _$LT$mozjs..typedarray..ClampedU8$u20$as$u20$mozjs..typedarray..TypedArrayElement$GT$::unwrap_array::hac6b06fe2c5229b0[/Users/jdm/src/alt-servo/target/debug/servo +0x33ec658]
 0:04.49 pid:99358 #08: mozjs::typedarray::TypedArray$LT$T$C$S$GT$::from::h60526a85a4b9a638[/Users/jdm/src/alt-servo/target/debug/servo +0x236e624]
 0:04.49 pid:99358 #09: script::dom::bindings::buffer_source::HeapBufferSource$LT$T$GT$::get_typed_array::h3a16acd7e09dc2b5[/Users/jdm/src/alt-servo/target/debug/servo +0x11ecc74]
 0:04.49 pid:99358 #10: script::dom::imagedata::ImageData::new_with_data::hb38804c2821ca45b[/Users/jdm/src/alt-servo/target/debug/servo +0x156d710]
 0:04.49 pid:99358 #11: script::dom::imagedata::ImageData::new::hf189019b40a87f62[/Users/jdm/src/alt-servo/target/debug/servo +0x156d638]
 0:04.50 pid:99358 #12: script::canvas_state::CanvasState::get_image_data::he0c0678e1e8b4323[/Users/jdm/src/alt-servo/target/debug/servo +0x1743460]
 0:04.50 pid:99358 #13: _$LT$script..dom..canvasrenderingcontext2d..CanvasRenderingContext2D$u20$as$u20$script_bindings..codegen..GenericBindings..CanvasRenderingContext2DBinding..CanvasRenderingContext2D_Binding..CanvasRenderingContext2DMethods$LT$script..dom..bindings..codegen[/Users/jdm/src/alt-servo/target/debug/servo +0x1cb2aac]
 0:04.50 pid:99358 #14: script_bindings::codegen::GenericBindings::CanvasRenderingContext2DBinding::CanvasRenderingContext2D_Binding::getImageData::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h77c6c00cbe32ddc8[/Users/jdm/src/alt-servo/target/debug/servo +0x1629a08]
 0:04.50 pid:99358 #15: script_bindings::codegen::GenericBindings::CanvasRenderingContext2DBinding::CanvasRenderingContext2D_Binding::getImageData::_$u7b$$u7b$closure$u7d$$u7d$::h6b1d7403c4ee8362[/Users/jdm/src/alt-servo/target/debug/servo +0x1629528]
 0:04.50 pid:99358 #16: core::ops::function::impls::_$LT$impl$u20$core..ops..function..FnOnce$LT$A$GT$$u20$for$u20$$RF$mut$u20$F$GT$::call_once::h3794fc22023cb570[/Users/jdm/src/alt-servo/target/debug/servo +0x33f1e88]
 0:04.51 pid:99358 #17: _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h73750f6a8f6dcde7[/Users/jdm/src/alt-servo/target/debug/servo +0x33ec85c]
 0:04.51 pid:99358 #18: std::panicking::try::do_call::h34bb780c87608c8e[/Users/jdm/src/alt-servo/target/debug/servo +0x33ea474]
 0:04.51 pid:99358 #19: __rust_try[/Users/jdm/src/alt-servo/target/debug/servo +0x33f3364]
 0:04.51 pid:99358 #20: std::panic::catch_unwind::hea3f0e1041a57c46[/Users/jdm/src/alt-servo/target/debug/servo +0x33f1a20]
 0:04.52 pid:99358 #21: mozjs::panic::wrap_panic::he5e7f197aad00cbe[/Users/jdm/src/alt-servo/target/debug/servo +0x33f0358]
 0:04.52 pid:99358 #22: script_bindings::codegen::GenericBindings::CanvasRenderingContext2DBinding::CanvasRenderingContext2D_Binding::getImageData::h29f4b74923ea475e[/Users/jdm/src/alt-servo/target/debug/servo +0x16294d4]
 0:04.52 pid:99358 #23: CallJitMethodOp[/Users/jdm/src/alt-servo/target/debug/servo +0x51b846c]
 0:04.52 pid:99358 #24: script_bindings::utils::generic_call::h354947a4d92d928c[/Users/jdm/src/alt-servo/target/debug/servo +0x32e0920]
 0:04.53 pid:99358 #25: script_bindings::utils::generic_method::hd77fbffe3f8609b7[/Users/jdm/src/alt-servo/target/debug/servo +0x1f0026c]
 0:04.53 pid:99358 #26: CallJSNative(JSContext*, bool (*)(JSContext*, unsigned int, JS::Value*), js::CallReason, JS::CallArgs const&)[/Users/jdm/src/alt-servo/target/debug/servo +0x34505e0]
 0:04.53 pid:99358 #27: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x344ff98]
 0:04.53 pid:99358 #28: InternalCall(JSContext*, js::AnyInvokeArgs const&, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x3450f40]
 0:04.54 pid:99358 #29: js::CallFromStack(JSContext*, JS::CallArgs const&, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x3450d90]
 0:04.54 pid:99358 #30: js::Interpret(JSContext*, js::RunState&)[/Users/jdm/src/alt-servo/target/debug/servo +0x3460480]
 0:04.54 pid:99358 #31: MaybeEnterInterpreterTrampoline(JSContext*, js::RunState&)[/Users/jdm/src/alt-servo/target/debug/servo +0x344f958]
 0:04.54 pid:99358 #32: js::RunScript(JSContext*, js::RunState&)[/Users/jdm/src/alt-servo/target/debug/servo +0x344f3ec]
 0:04.54 pid:99358 #33: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x34501ac]
 0:04.55 pid:99358 #34: InternalCall(JSContext*, js::AnyInvokeArgs const&, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x3450f40]
 0:04.55 pid:99358 #35: js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x34510e8]
 0:04.55 pid:99358 #36: js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::MutableHandle<JS::Value>)[/Users/jdm/src/alt-servo/target/debug/servo +0x3530384]
 0:04.55 pid:99358 #37: PromiseReactionJob(JSContext*, unsigned int, JS::Value*)[/Users/jdm/src/alt-servo/target/debug/servo +0x38d2a94]
 0:04.56 pid:99358 #38: CallJSNative(JSContext*, bool (*)(JSContext*, unsigned int, JS::Value*), js::CallReason, JS::CallArgs const&)[/Users/jdm/src/alt-servo/target/debug/servo +0x34505e0]
 0:04.56 pid:99358 #39: js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x344ff98]
 0:04.56 pid:99358 #40: InternalCall(JSContext*, js::AnyInvokeArgs const&, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x3450f40]
 0:04.56 pid:99358 #41: js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>, js::CallReason)[/Users/jdm/src/alt-servo/target/debug/servo +0x34510e8]
 0:04.57 pid:99358 #42: JS::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::HandleValueArray const&, JS::MutableHandle<JS::Value>)[/Users/jdm/src/alt-servo/target/debug/servo +0x365cd20]
 0:04.57 pid:99358 #43: mozjs::rust::wrappers::Call::h95717679b87203a7[/Users/jdm/src/alt-servo/target/debug/servo +0x2418620]
 0:04.57 pid:99358 #44: script_bindings::codegen::GenericBindings::PromiseBinding::PromiseJobCallback$LT$D$GT$::Call::h8160d9ee66abd42b[/Users/jdm/src/alt-servo/target/debug/servo +0x1c86a00]
 0:04.57 pid:99358 #45: script_bindings::codegen::GenericBindings::PromiseBinding::PromiseJobCallback$LT$D$GT$::Call_::h058cf7974395842f[/Users/jdm/src/alt-servo/target/debug/servo +0x1c86c64]
 0:04.57 pid:99358 #46: script::microtask::MicrotaskQueue::checkpoint::h5f7a448b84fcbdcc[/Users/jdm/src/alt-servo/target/debug/servo +0x2037b78]
 0:04.58 pid:99358 #47: script::script_thread::ScriptThread::perform_a_microtask_checkpoint::h4b477a908702c57f[/Users/jdm/src/alt-servo/target/debug/servo +0x178df6c]
 0:04.58 pid:99358 #48: script::script_thread::ScriptThread::handle_msgs::h13d53a17a49a8c09[/Users/jdm/src/alt-servo/target/debug/servo +0x1778d88]
 0:04.58 pid:99358 #49: script::script_thread::ScriptThread::start::hddeb36b5c134bda8[/Users/jdm/src/alt-servo/target/debug/servo +0x177564c]
 0:04.58 pid:99358 #50: _$LT$script..script_thread..ScriptThread$u20$as$u20$script_layout_interface..ScriptThreadFactory$GT$::create::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::h7a422ef48fc3754b[/Users/jdm/src/alt-servo/target/debug/servo +0x2cff01c]
 0:04.58 pid:99358 #51: profile_traits::mem::ProfilerChan::run_with_memory_reporting::h1d2d4a3dd351c87c[/Users/jdm/src/alt-servo/target/debug/servo +0x195952c]
 0:04.59 pid:99358 #52: _$LT$script..script_thread..ScriptThread$u20$as$u20$script_layout_interface..ScriptThreadFactory$GT$::create::_$u7b$$u7b$closure$u7d$$u7d$::h39c080ae39bbe434[/Users/jdm/src/alt-servo/target/debug/servo +0x2cfeeb8]
 0:04.59 pid:99358 #53: std::sys::backtrace::__rust_begin_short_backtrace::h052b999847b8f3d4[/Users/jdm/src/alt-servo/target/debug/servo +0x1d64db4]
 0:04.59 pid:99358 #54: std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::hafb4072babfc5e89[/Users/jdm/src/alt-servo/target/debug/servo +0x259a5f4]
 0:04.59 pid:99358 #55: _$LT$core..panic..unwind_safe..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::hc202c2c3ff9f5e15[/Users/jdm/src/alt-servo/target/debug/servo +0x2020cdc]
 0:04.60 pid:99358 #56: std::panicking::try::do_call::h224082c61f0f1a79[/Users/jdm/src/alt-servo/target/debug/servo +0x20b5bf8]
 0:04.60 pid:99358 #57: __rust_try[/Users/jdm/src/alt-servo/target/debug/servo +0x259e678]
 0:04.60 pid:99358 #58: std::thread::Builder::spawn_unchecked_::_$u7b$$u7b$closure$u7d$$u7d$::ha2b36b6412a76086[/Users/jdm/src/alt-servo/target/debug/servo +0x259974c]
 0:04.60 pid:99358 #59: core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h7ac234a49af00dfe[/Users/jdm/src/alt-servo/target/debug/servo +0x1a8fcc8]
 0:04.63 pid:99358 #60: std::sys::pal::unix::thread::Thread::new::thread_start::h02b173395cbbc15c[/Users/jdm/src/alt-servo/target/debug/servo +0x890a250]
 0:04.63 pid:99358 #61: _pthread_start[/usr/lib/system/libsystem_pthread.dylib +0x72e4]

Weirdly, running ./mach test-wpt /html/canvas/element/manual/imagebitmap/canvas-createImageBitmap-resize.html --headless --pref js_mem_gc_zeal_level=2 --pref js_mem_gc_zeal_frequency=1 --timeout-multiplier=20 made it go away.

This is #37618 and it's the problem is also on main, but it well hidden.

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@gterzian gterzian Awaiting requested review from gterzian gterzian will be requested when the pull request is marked ready for review gterzian is a code owner

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@jdm @sagudev