Bug: Perma [Tier 2] /builds/worker/checkouts/gecko/toolkit/components/translations/actors/TranslationsParent.sys.mjs:98:5 | Unknown property access Services.prefs.notifyObservers, Interfaces: nsIPrefBranch,nsIPrefService (mozilla/valid-services-property)
Status: RESOLVED
Priority: P5
Resolution: FIXED
Created: 2025-01-18 01:57:14+00:00
Resolved: 2025-01-27 06:12:10+00:00

**Filed by:** smolnar [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=490714765&repo=mozilla-central
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/KZNKFCEcR-u6lIAeI3Wx1A/runs/0/artifacts/public/logs/live_backing.log

---
```
/builds/worker/checkouts/gecko/devtools
[task 2025-01-18T01:25:56.678Z] 01:25:56.678 eslint (74) | ESLint command: /builds/worker/fetches/node/bin/node /builds/worker/checkouts/gecko/node_modules/eslint/bin/eslint.js --ext [mjs,js,jsm,json,jsx,html,sjs,xhtml] --format json --no-error-on-unmatched-pattern --quiet --rule mozilla/valid-services-property: error --rule mozilla/valid-ci-uses: error --ignore-pattern dom/tests/mochitest/dom-level1-core --ignore-pattern mobile/android/focus-android/quality/detekt-baseline.xml --ignore-pattern mobile/android/android-components/components/feature/readerview/src/main/res --ignore-pattern dom/media/platforms/ffmpeg/ffmpeg59 --ignore-pattern mobile/android/android-components/components/feature/media/src/main/res --ignore-pattern testing/xpcshell/node-http2 --ignore-pattern testing/modules/sinon-7.2.7.js --ignore-pattern dom/media/webspeech/recognition/energy_endpointer.cc --ignore-pattern mobile/android/android-components/samples/glean/src/main/res/raw --ignore-pattern mobile/android/android-components/components/feature/pwa/src/main/res --ignore-pattern testing/talos/talos/tests/offscreencanvas/benchmarks/video/demuxer_mp4.js --ignore-pattern mobile/android/android-components/components/feature/addons/src/main/res --ignore-pattern mobile/android/android-components/components/browser/toolbar2 --ignore-pattern devtools/shared/qrcode/decoder --ignore-pattern mobile/android/android-components/components/feature/qr/src/main/res --ignore-pattern testing/mochitest/pywebsocket3 --ignore-pattern mobile/android/android-components/components/service/nimbus/src/main/res --ignore-pattern mobile/android/android-components/components/compose/tabstray/src/main/res --ignore-pattern toolkit/components/uniffi-bindgen-gecko-js/fixtures/generated --ignore-pattern mobile/android/focus-android/app/lint-baseline.xml --ignore-pattern mobile/android/android-components/components/browser/engine-system/src/main/res --ignore-pattern mobile/locales/l10n-onchange-changesets.json --ignore-pattern mobile/android/fenix/gradle --ignore-pattern security/manager/tools/PreloadedHPKPins.json --ignore-pattern intl/components/src/UnicodeScriptCodes.h --ignore-pattern devtools/client/jsonview/lib/require.js --ignore-pattern dom/media/platforms/ffmpeg/libav53 --ignore-pattern dom/media/gmp/widevine-adapter/content_decryption_module_ext.h --ignore-pattern mobile/android/android-components/components/feature/customtabs/src/main/res --ignore-pattern dom/media/webaudio/test/blink --ignore-pattern testing/web-platform/tests/tools/third_party --ignore-pattern dom/media/webspeech/recognition/energy_endpointer.h --ignore-pattern testing/web-platform/mozilla/tests/webgpu --ignore-pattern toolkit/components/uniffi-js/UniFFIGeneratedScaffolding.cpp --ignore-pattern mobile/android/android-components/components/feature/sitepermissions --ignore-pattern dom/media/gmp/widevine-adapter/content_decryption_module.h --ignore-pattern security/nss --ignore-pattern devtools/shared/jsbeautify --ignore-pattern mozglue/tests/glibc_printf_tests --ignore-pattern dom/media/platforms/ffmpeg/ffmpeg57 --ignore-pattern testing/talos/talos/tests/kraken --ignore-pattern mobile/android/android-components/components/feature/app-links/src/main/res --ignore-pattern devtools/shared/qrcode/encoder --ignore-pattern devtools/client/shared/sourceeditor/test/cm_mode_ruby.js --ignore-pattern toolkit/components/nimbus/schemas/NimbusExperiment.schema.json --ignore-pattern dom/media/webspeech/recognition/energy_endpointer_params.cc --ignore-pattern dom/media/webspeech/recognition/endpointer.cc --ignore-pattern toolkit/components/translations/bergamot-translator/bergamot-translator.js --ignore-pattern devtools/client/debugger/src/workers/parser/utils/parse-script-tags --ignore-pattern dom/media/platforms/ffmpeg/libav54 --ignore-pattern toolkit/crashreporter/breakpad-client --ignore-pattern dom/webgpu/tests/cts/checkout --ignore-pattern mobile/android/android-components/components/feature/fxsuggest/src/main/res --ignore-pattern dom/media/platforms/ffmpeg/libav55 --ignore-pattern dom/webauthn/tests/pkijs --ignore-pattern toolkit/components/url-classifier/chromium --ignore-pattern mobile/android/focus-android/app/src/main/res --ignore-pattern mobile/android/android-components/components/feature/autofill/src/main/res --ignore-pattern security/sandbox/linux/launch/glibc_hack/sandbox --ignore-pattern dom/media/webspeech/recognition/endpointer.h --ignore-pattern netwerk/dns/nsIDNKitInterface.h --ignore-pattern testing/xpcshell/dns-packet --ignore-pattern xpcom/build/mach_override.h --ignore-pattern mobile/android/android-components/components/browser/menu/src/main/res --ignore-pattern mobile/android/android-components/components/feature/prompts/src/main/res --ignore-pattern mobile/android/android-components/components/browser/toolbar/src/main/res --ignore-pattern xpcom/idl-parser/xpidl/fixtures --ignore-pattern intl/unicharutil/util/nsUnicodePropertyData.cpp --ignore-pattern dom/tests/mochitest/dom-level2-core --ignore-pattern intl/unicharutil/util/nsSpecialCasingData.cpp --ignore-pattern toolkit/components/pdfjs/PdfJsDefaultPrefs.js --ignore-pattern mobile/android/android-components/components/ui/widgets/src/main/res --ignore-pattern mobile/android/fenix/app/lint-baseline.xml --ignore-pattern mobile/android/fenix/app/src/debug/res/raw --ignore-pattern toolkit/content/vendor/react --ignore-pattern mobile/locales/l10n-changesets.json --ignore-pattern dom/canvas/test/webgl-conf/checkout --ignore-pattern security/sandbox/chromium-shim --ignore-pattern devtools/shared/heapsnapshot/CoreDump.pb.cc --ignore-pattern mobile/android/android-components/components/feature/readerview/src/main/assets/extensions/readerview/readability --ignore-pattern mobile/android/android-components/components/feature/tabs/src/main/res --ignore-pattern dom/base/use_counter_metrics.yaml --ignore-pattern devtools/shared/storage/vendor --ignore-pattern mobile/android/android-components/gradle --ignore-pattern security/manager/tools/KnownRootHashes.json --ignore-pattern security/sandbox/chromium --ignore-pattern devtools/client/shared/vendor --ignore-pattern testing/talos/talos/tests/offscreencanvas/benchmarks/video/mp4box.all.min.js --ignore-pattern toolkit/components/utils/mozjexl.sys.mjs --ignore-pattern devtools/client/inspector/markup/test/helper_diff.js --ignore-pattern dom/media/platforms/ffmpeg/ffmpeg61 --ignore-pattern toolkit/components/resistfingerprinting/content/gl-matrix.js --ignore-pattern mobile/android/android-components/components/compose/awesomebar/src/main/res --ignore-pattern devtools/shared/heapsnapshot/CoreDump.pb.h --ignore-pattern dom/tests/mochitest/dom-level2-html --ignore-pattern toolkit/components/jsoncpp --ignore-pattern mobile/android/android-components/components/compose/cfr/src/main/res --ignore-pattern toolkit/crashreporter/google-breakpad --ignore-pattern toolkit/content/widgets/vendor --ignore-pattern mobile/android/android-components/components/feature/contextmenu/src/main/res --ignore-pattern dom/media/gmp/rlz --ignore-pattern toolkit/components/nimbus/schemas/ExperimentFeature.schema.json --ignore-pattern mobile/android/exoplayer2 --ignore-pattern mobile/android/android-components/components/ui/tabcounter/src/main/res --ignore-pattern mobile/android/android-components/components/support/base/src/main/res --ignore-pattern mobile/android/fenix/config/detekt-baseline.xml --ignore-pattern mobile/android/android-components/components/compose/browser-toolbar/src/main/res --ignore-pattern dom/imptests --ignore-pattern dom/media/gmp/widevine-adapter/content_decryption_module_proxy.h --ignore-pattern mobile/android/fenix/app/src/main/res --ignore-pattern mobile/android/android-components/components/feature/downloads/src/main/res --ignore-pattern testing/xpcshell/node_ip --ignore-pattern dom/media/webrtc/tests/mochitests/helpers_from_wpt --ignore-pattern toolkit/components/passwordmgr/shared/PasswordRulesParser.sys.mjs --ignore-pattern remote/test --ignore-pattern mobile/android/android-components/components/feature/search/src/main/res --ignore-pattern testing/talos/talos/tests/v8_7 --ignore-pattern toolkit/components/viaduct/fetch_msg_types.pb.cc --ignore-pattern toolkit/components/normandy/vendor --ignore-pattern mobile/android/android-components/components/support/utils/src/main/res --ignore-pattern xpcom/io/crc32c.c --ignore-pattern dom/media/webrtc/transport/third_party --ignore-pattern security/manager/tools/log_list.json --ignore-pattern mobile/android/android-components/components/feature/privatemode/src/main/res --ignore-pattern mobile/android/android-components/config/detekt-baseline.xml --ignore-pattern devtools/client/shared/build/babel.js --ignore-pattern dom/media/webvtt/vtt.sys.mjs --ignore-pattern devtools/shared/sprintfjs --ignore-pattern devtools/client/shared/sourceeditor/codemirror6 --ignore-pattern dom/media/gmp/widevine-adapter/content_decryption_module_export.h --ignore-pattern toolkit/components/reader/readability --ignore-pattern devtools/client/shared/sourceeditor/test/codemirror --ignore-pattern toolkit/components/nimbus/schemas/ExperimentFeatureManifest.schema.json --ignore-pattern remote/cdp/test/browser/chrome-remote-interface.js --ignore-pattern dom/media/webspeech/recognition/energy_endpointer_params.h --ignore-pattern dom/media/platforms/ffmpeg/ffmpeg58 --ignore-pattern dom/media/platforms/ffmpeg/ffmpeg60 --ignore-pattern xpcom/build/mach_override.c --ignore-pattern toolkit/components/translation/cld2 --ignore-pattern toolkit/components/viaduct/fetch_msg_types.pb.h --ignore-pattern toolkit/components/certviewer/content/vendor --ignore-pattern netwerk/sctp/src --ignore-pattern testing/mozbase/mozproxy/mozproxy/backends/mitm/scripts/catapult --ignore-pattern mozglue/misc/decimal --ignore-pattern toolkit/components/protobuf --ignore-pattern mobile/android/android-components/components/feature/awesomebar/src/main/res --ignore-pattern intl/icu --ignore-pattern mobile/android/android-components/components/feature/search/src/main/assets/search/search_telemetry_v2.json --ignore-pattern mobile/android/focus-android/gradle --ignore-pattern devtools/client/shared/sourceeditor/codemirror --ignore-pattern dom/tests/mochitest/ajax --ignore-pattern parser/expat --ignore-pattern devtools/shared/node-properties --ignore-pattern mobile/android/android-components/components/feature/findinpage/src/main/res --ignore-pattern testing/talos/talos/tests/dromaeo --ignore-pattern mobile/android/android-components/components/browser/errorpages/src/main/res --ignore-pattern mobile/android/android-components/components/lib/crash/src/main/res --ignore-pattern testing/talos/talos/tests/devtools/addon/content/pages --ignore-pattern intl/icu_capi --ignore-pattern mobile/android/android-components/components/support/ktx/src/main/res --ignore-pattern toolkit/components/ml/vendor --ignore-pattern devtools/shared/compatibility/dataset/css-properties.json --ignore-pattern testing/xpcshell/node-ws --ignore-pattern mobile/android/android-components/components/feature/webnotifications/src/main/res --ignore-pattern testing/web-platform/tests/resources/webidl2 --ignore-pattern mobile/android/android-components/components/browser/menu2/src/main/res /builds/worker/checkouts/gecko/supply-chain /builds/worker/checkouts/gecko/testing /builds/worker/checkouts/gecko/dom /builds/worker/checkouts/gecko/mobile /builds/worker/checkouts/gecko/.eslintrc-test-paths.js /builds/worker/checkouts/gecko/toolkit /builds/worker/checkouts/gecko/.prettierrc.js /builds/worker/checkouts/gecko/memory /builds/worker/checkouts/gecko/xpcom /builds/worker/checkouts/gecko/mozglue /builds/worker/checkouts/gecko/security /builds/worker/checkouts/gecko/.stylelintrc.js /builds/worker/checkouts/gecko/parser /builds/worker/checkouts/gecko/.github /builds/worker/checkouts/gecko/remote /builds/worker/checkouts/gecko/intl /builds/worker/checkouts/gecko/netwerk /builds/worker/checkouts/gecko/chrome /builds/worker/checkouts/gecko/devtools
[task 2025-01-18T01:26:24.380Z] 01:26:24.378 eslint (75) | Prettier command: /builds/worker/fetches/node/bin/node /builds/worker/checkouts/gecko/node_modules/prettier/bin/prettier.cjs --list-different --no-error-on-unmatched-pattern --quiet --rule mozilla/valid-services-property: error --rule mozilla/valid-ci-uses: error /builds/worker/checkouts/gecko/servo /builds/worker/checkouts/gecko/startupcache /builds/worker/checkouts/gecko/storage /builds/worker/checkouts/gecko/gradle /builds/worker/checkouts/gecko/hal /builds/worker/checkouts/gecko/widget /builds/worker/checkouts/gecko/extensions /builds/worker/checkouts/gecko/docshell /builds/worker/checkouts/gecko/build /builds/worker/checkouts/gecko/js /builds/worker/checkouts/gecko/image /builds/worker/checkouts/gecko/.vscode /builds/worker/checkouts/gecko/docs /builds/worker/checkouts/gecko/package.json /builds/worker/checkouts/gecko/.eslintrc-ignores.js /builds/worker/checkouts/gecko/modules /builds/worker/checkouts/gecko/.eslintrc.js /builds/worker/checkouts/gecko/view /builds/worker/checkouts/gecko/taskcluster
[task 2025-01-18T01:26:28.158Z] 01:26:28.156 eslint (73) | Prettier command: /builds/worker/fetches/node/bin/node /builds/worker/checkouts/gecko/node_modules/prettier/bin/prettier.cjs --list-different --no-error-on-unmatched-pattern --quiet --rule mozilla/valid-services-property: error --rule mozilla/valid-ci-uses: error /builds/worker/checkouts/gecko/.eslintrc-rollouts.js /builds/worker/checkouts/gecko/gfx /builds/worker/checkouts/gecko/.babel-eslint.rc.js /builds/worker/checkouts/gecko/ipc /builds/worker/checkouts/gecko/uriloader /builds/worker/checkouts/gecko/layout /builds/worker/checkouts/gecko/mfbt /builds/worker/checkouts/gecko/python
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[task 2025-01-18T01:28:14.287Z] 01:28:14.287 eslint (72) | Prettier command: /builds/worker/fetches/node/bin/node /builds/worker/checkouts/gecko/node_modules/prettier/bin/prettier.cjs --list-different --no-error-on-unmatched-pattern --quiet --rule mozilla/valid-services-property: error --rule mozilla/valid-ci-uses: error /builds/worker/checkouts/gecko/.cargo /builds/worker/checkouts/gecko/browser /builds/worker/checkouts/gecko/media /builds/worker/checkouts/gecko/config /builds/worker/checkouts/gecko/package-lock.json /builds/worker/checkouts/gecko/accessible /builds/worker/checkouts/gecko/xpfe /builds/worker/checkouts/gecko/editor /builds/worker/checkouts/gecko/services /builds/worker/checkouts/gecko/caps /builds/worker/checkouts/gecko/tools
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[task 2025-01-18T01:31:05.808Z] 01:31:05.808 eslint (74) | Prettier command: /builds/worker/fetches/node/bin/node /builds/worker/checkouts/gecko/node_modules/prettier/bin/prettier.cjs --list-different --no-error-on-unmatched-pattern --quiet --rule mozilla/valid-services-property: error --rule mozilla/valid-ci-uses: error /builds/worker/checkouts/gecko/supply-chain /builds/worker/checkouts/gecko/testing /builds/worker/checkouts/gecko/dom /builds/worker/checkouts/gecko/mobile /builds/worker/checkouts/gecko/.eslintrc-test-paths.js /builds/worker/checkouts/gecko/toolkit /builds/worker/checkouts/gecko/.prettierrc.js /builds/worker/checkouts/gecko/memory /builds/worker/checkouts/gecko/xpcom /builds/worker/checkouts/gecko/mozglue /builds/worker/checkouts/gecko/security /builds/worker/checkouts/gecko/.stylelintrc.js /builds/worker/checkouts/gecko/parser /builds/worker/checkouts/gecko/.github /builds/worker/checkouts/gecko/remote /builds/worker/checkouts/gecko/intl /builds/worker/checkouts/gecko/netwerk /builds/worker/checkouts/gecko/chrome /builds/worker/checkouts/gecko/devtools
[task 2025-01-18T01:33:04.890Z] 01:33:04.889 eslint (74) | Finished in 434.21 seconds
[task 2025-01-18T01:33:04.908Z] TEST-UNEXPECTED-ERROR | /builds/worker/checkouts/gecko/toolkit/components/translations/actors/TranslationsParent.sys.mjs:98:5 | Unknown property access Services.prefs.notifyObservers, Interfaces: nsIPrefBranch,nsIPrefService (mozilla/valid-services-property)
[taskcluster 2025-01-18 01:33:05.883Z] === Task Finished ===
[taskcluster 2025-01-18 01:33:06.242Z] Unsuccessful task run with exit code: 1 completed in 604.417 seconds
```