Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

18 files changed, 2389 insertions, 0 deletions

diff --git a/taskcluster/ci/source-test/clang.yml b/taskcluster/ci/source-test/clang.yml
new file mode 100644
index 0000000000..f513ec8dc0
--- /dev/null
+++ b/taskcluster/ci/source-test/clang.yml
@@ -0,0 +1,116 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    # Run only on try and code-review tasks
+    # to avoid running clang tools on the whole codebase
+    run-on-projects: []
+    platform: linux64/debug
+    worker-type: t-linux-xlarge-source
+    attributes:
+        code-review: true
+    worker:
+        docker-image: {in-tree: static-analysis-build}
+        max-run-time: 5400
+    treeherder:
+        kind: other
+        tier: 2
+    run:
+        using: run-task
+        tooltool-downloads: public
+    fetches:
+        toolchain:
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+    when:
+        files-changed:
+            - '**/*.c'
+            - '**/*.cpp'
+            - '**/*.cc'
+            - '**/*.cxx'
+            - '**/*.m'
+            - '**/*.mm'
+
+tidy:
+    description: Run static-analysis (clang-tidy) on C/C++ patches
+    treeherder:
+        symbol: cpp(clang-tidy)
+    run:
+        cwd: '{checkout}'
+        command: >-
+            source taskcluster/scripts/misc/source-test-clang-setup.sh &&
+            ./mach --log-no-times static-analysis check --outgoing --output $HOME/clang-tidy.json --format json
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-clang-tidy
+            - linux64-rust
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    worker:
+        artifacts:
+            - type: file
+              name: public/code-review/clang-tidy.json
+              path: /builds/worker/clang-tidy.json
+
+format:
+    description: Run clang-format on C/C++ patches
+    treeherder:
+        symbol: cpp(clang-format)
+    run:
+        cwd: '{checkout}'
+        command: >-
+            source taskcluster/scripts/misc/source-test-clang-setup.sh &&
+            ./mach --log-no-times clang-format --outgoing --output $HOME/clang-format.json --format json &&
+            ./mach --log-no-times clang-format --outgoing --output $HOME/clang-format.diff --format diff
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-clang-tidy
+            - linux64-rust
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    when:
+        files-changed:
+            - '**/*.c'
+            - '**/*.cpp'
+            - '**/*.cc'
+            - '**/*.cxx'
+            - '**/*.m'
+            - '**/*.mm'
+            - '**/*.h'
+            - '**/*.hh'
+            - '**/*.hpp'
+            - '**/*.hxx'
+    worker:
+        artifacts:
+            - type: file
+              name: public/code-review/clang-format.json
+              path: /builds/worker/clang-format.json
+            - type: file
+              name: public/code-review/clang-format.diff
+              path: /builds/worker/clang-format.diff
+
+external:
+    description: Run static-analysis (clang-tidy) on C/C++ patches with external checks
+    treeherder:
+        symbol: cpp(clang-tidy-external)
+    run:
+        cwd: '{checkout}'
+        command: >-
+            source taskcluster/scripts/misc/source-test-clang-setup.sh &&
+            ./mach --log-no-times static-analysis check --checks="-*,mozilla-civet-*" --outgoing --output $HOME/clang-tidy.json --format json
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-clang-tidy-external
+            - linux64-rust
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    worker:
+        artifacts:
+            - type: file
+              name: public/code-review/clang-tidy.json
+              path: /builds/worker/clang-tidy.json
diff --git a/taskcluster/ci/source-test/cram.yml b/taskcluster/ci/source-test/cram.yml
new file mode 100644
index 0000000000..6e29e7c6a6
--- /dev/null
+++ b/taskcluster/ci/source-test/cram.yml
@@ -0,0 +1,21 @@
+---
+tryselect:
+    description: tools/tryselect integration tests
+    platform: linux1804-64/opt
+    treeherder:
+        symbol: cram(try)
+        kind: test
+        tier: 2
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+    run:
+        using: mach
+        mach: cramtest tools/tryselect
+    always-target: true
+    when:
+        files-changed:
+            - testing/mach_commands.py
+            - third_party/python/cram/**
+            - tools/tryselect/**
diff --git a/taskcluster/ci/source-test/doc.yml b/taskcluster/ci/source-test/doc.yml
new file mode 100644
index 0000000000..a3529aaf9e
--- /dev/null
+++ b/taskcluster/ci/source-test/doc.yml
@@ -0,0 +1,72 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+generate:
+    description: Generate the Sphinx documentation
+    platform: doc/opt
+    treeherder:
+        symbol: doc(generate)
+        kind: test
+        tier: 1
+    run-on-projects: ['trunk']
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+        artifacts:
+            - type: file
+              name: public/docs.tar.gz
+              path: /builds/worker/checkouts/gecko/docs-out/main.tar.gz
+            - type: file
+              name: public/trees.json
+              path: /builds/worker/artifacts/trees.json
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            cp -r /build/node_modules_eslint node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
+            ./mach doc --outdir docs-out --no-open --no-serve --archive --fatal-warnings --check-num-warnings --dump-trees=/builds/worker/artifacts/trees.json
+        sparse-profile: sphinx-docs
+    optimization:
+        skip-unless-schedules: [docs]
+
+upload:
+    description: Generate and upload the Sphinx documentation
+    platform: doc/opt
+    attributes:
+        code-review: true
+    treeherder:
+        symbol: doc(upload)
+        kind: test
+        tier: 2
+    run-on-projects: [mozilla-central-only]
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+        env:
+            MOZ_SOURCE_DOCS_USE_GOOGLE: "1"
+        taskcluster-proxy: true
+        artifacts:
+            - type: file
+              name: public/firefox-source-docs-url.txt
+              path: /builds/worker/firefox-source-docs-url.txt
+            - type: file
+              name: public/trees.json
+              path: /builds/worker/artifacts/trees.json
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            cp -r /build/node_modules_eslint node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
+            ./mach doc --upload --no-open --no-serve --fatal-warnings --check-num-warnings --write-url /builds/worker/firefox-source-docs-url.txt --dump-trees=/builds/worker/artifacts/trees.json
+        sparse-profile: sphinx-docs
+    scopes:
+        - secrets:get:project/releng/gecko/build/level-{level}/gecko-docs-upload
+    optimization:
+        skip-unless-schedules: [docs]
diff --git a/taskcluster/ci/source-test/file-metadata.yml b/taskcluster/ci/source-test/file-metadata.yml
new file mode 100644
index 0000000000..9fee8e9b93
--- /dev/null
+++ b/taskcluster/ci/source-test/file-metadata.yml
@@ -0,0 +1,123 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: lint/opt
+    treeherder:
+        kind: other
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        artifacts:
+            - type: directory
+              path: /builds/worker/artifacts
+              name: public
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+    run:
+        using: mach
+
+bugzilla-components:
+    description: Generate metadata about source files and Bugzilla
+    treeherder:
+        symbol: Bugzilla
+        tier: 1
+    index:
+        product: source
+        job-name: source-bugzilla-info
+    run:
+        mach: file-info bugzilla-automation /builds/worker/artifacts
+    worker:
+        max-run-time: 1800
+    run-on-projects: ['autoland', 'mozilla-central']
+
+test-info-xorigin:
+    description: Generate test manifest metadata for tests disabled on cross-origin
+    treeherder:
+        symbol: test-info(xorigin)
+        tier: 2
+    index:
+        product: source
+        job-name: test-info-xorigin
+    worker:
+        docker-image: {in-tree: debian11-amd64-build}
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-clang-tidy
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >-
+            source taskcluster/scripts/misc/source-test-common.sh &&
+            ./mach test-info report --show-tests --show-summary --filter-keys=fail-if,fails-if,random-if,skip-if --filter-values='(?<!!)xorigin' --output-file /builds/worker/artifacts/test-info-xorigin.json
+
+test-info-disabled-by-os:
+    description: Generate test manifest metadata for tests disabled on each operating system
+    treeherder:
+        symbol: test-info(disabled-by-os)
+        tier: 2
+    index:
+        product: source
+        job-name: test-info-disabled-by-os
+    worker:
+        docker-image: {in-tree: debian11-amd64-build}
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-clang-tidy
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >-
+            source taskcluster/scripts/misc/source-test-common.sh &&
+            ./mach test-info report --show-tests --show-summary --filter-keys=fail-if,fails-if,random-if,skip-if --filter-values='(?<!!)(android|android_version|Android|AndroidVersion|geckoview|emulator|device)' --output-file /builds/worker/artifacts/test-info-disabled-on-android.json &&
+            ./mach test-info report --show-tests --show-summary --filter-keys=fail-if,fails-if,random-if,skip-if --filter-values='(?<!!)(linux|Linux)' --output-file /builds/worker/artifacts/test-info-disabled-on-linux.json &&
+            ./mach test-info report --show-tests --show-summary --filter-keys=fail-if,fails-if,random-if,skip-if --filter-values='(?<!!)(osx|OSX|mac)' --output-file /builds/worker/artifacts/test-info-disabled-on-mac.json &&
+            ./mach test-info report --show-tests --show-summary --filter-keys=fail-if,fails-if,random-if,skip-if --filter-values='(?<!!)(win|Windows|WINNT)' --output-file /builds/worker/artifacts/test-info-disabled-on-windows.json
+
+test-info-all:
+    description: Generate global test manifest metadata
+    treeherder:
+        symbol: test-info(all)
+        tier: 2
+    index:
+        product: source
+        job-name: test-info-all
+    worker:
+        docker-image: {in-tree: debian11-amd64-build}
+        max-run-time: 5400
+    run-on-projects: ['mozilla-central']
+    fetches:
+        toolchain:
+            - linux64-clang
+            - linux64-clang-tidy
+            - linux64-rust
+            - linux64-cbindgen
+            - linux64-nasm
+            - linux64-node
+            - sysroot-x86_64-linux-gnu
+            - sysroot-wasm32-wasi
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >-
+            source taskcluster/scripts/misc/source-test-common.sh &&
+            ./mach test-info testrun-report --output-file /builds/worker/artifacts/test-run-info.json &&
+            ./mach test-info report --show-tests --show-summary --show-testruns --verbose --output-file /builds/worker/artifacts/test-info-all-tests.json &&
+            ./mach test-info report --show-annotations --output-file /builds/worker/artifacts/test-info-manifest-conditions.json
diff --git a/taskcluster/ci/source-test/jsshell.yml b/taskcluster/ci/source-test/jsshell.yml
new file mode 100644
index 0000000000..2ce0a846d4
--- /dev/null
+++ b/taskcluster/ci/source-test/jsshell.yml
@@ -0,0 +1,87 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: linux64-shippable/opt
+    require-build:
+        linux64.*: build-linux64-shippable/opt
+    worker-type:
+        by-platform:
+            linux64.*: t-linux-talos-1804
+    worker:
+        by-platform:
+            linux64.*:
+                env:
+                    by-shell:
+                        sm:
+                            SHELL: /bin/bash
+                            JSSHELL: js
+                        v8:
+                            SHELL: /bin/bash
+                            JSSHELL: d8/release/d8
+                max-run-time: 3600
+    treeherder:
+        kind: test
+        tier: 2
+    run:
+        using: mach
+        mach: jsshell-bench --perfherder={shell} --binary=$MOZ_FETCHES_DIR/$JSSHELL {test}
+    run-on-projects:
+        by-shell:
+            sm:
+                by-test-platform:
+                    (linux|windows|macos)(?!.*shippable).*: []
+                    default: ['mozilla-central', 'integration']
+            default:
+                by-test-platform:
+                    (linux|windows|macos)(?!.*shippable).*: []
+                    default: ['mozilla-central']
+    fetches:
+        build:
+            - target.jsshell.zip
+        toolchain:
+            - linux64-custom-v8
+    optimization:
+        skip-unless-expanded: null
+
+bench-ares6:
+    description: Ares6 JavaScript shell benchmark suite
+    shell: ['sm', 'v8']
+    test: ares6
+    treeherder:
+        symbol: ares6
+
+bench-sixspeed:
+    description: Six-Speed JavaScript shell benchmark suite
+    shell: ['sm', 'v8']
+    test: six-speed
+    treeherder:
+        symbol: 6speed
+
+bench-sunspider:
+    description: SunSpider JavaScript shell benchmark suite
+    shell: ['sm']
+    test: sunspider
+    treeherder:
+        symbol: sunspider
+
+bench-web-tooling:
+    description: Web Tooling shell benchmark suite
+    shell: ['sm', 'v8']
+    test: web-tooling-benchmark
+    treeherder:
+        symbol: webtool
+    fetches:
+        fetch:
+            - web-tooling-benchmark
+
+bench-octane:
+    description: Octane shell benchmark suite
+    shell: ['sm', 'v8']
+    test: octane
+    treeherder:
+        symbol: octane
+    fetches:
+        fetch:
+            - octane
diff --git a/taskcluster/ci/source-test/kind.yml b/taskcluster/ci/source-test/kind.yml
new file mode 100644
index 0000000000..984f0648d3
--- /dev/null
+++ b/taskcluster/ci/source-test/kind.yml
@@ -0,0 +1,40 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+loader: gecko_taskgraph.loader.transform:loader
+
+transforms:
+    - gecko_taskgraph.transforms.try_job:transforms
+    - gecko_taskgraph.transforms.source_test:transforms
+    - gecko_taskgraph.transforms.release_notifications:transforms
+    - gecko_taskgraph.transforms.job:transforms
+    - gecko_taskgraph.transforms.task:transforms
+
+kind-dependencies:
+    - fetch
+    - toolchain
+    - build
+
+jobs-from:
+    - clang.yml
+    - cram.yml
+    - doc.yml
+    - file-metadata.yml
+    - jsshell.yml
+    - mozlint.yml
+    - mozlint-android.yml
+    - node.yml
+    - puppeteer.yml
+    - python.yml
+    - shadow-scheduler.yml
+    - taskgraph.yml
+    - vendor.yml
+    - webidl.yml
+    - webcompat.yml
+    - wpt-manifest.yml
+    - wpt-metadata.yml
+
+job-defaults:
+    attributes:
+        retrigger: true
diff --git a/taskcluster/ci/source-test/mozlint-android.yml b/taskcluster/ci/source-test/mozlint-android.yml
new file mode 100644
index 0000000000..6602d8c818
--- /dev/null
+++ b/taskcluster/ci/source-test/mozlint-android.yml
@@ -0,0 +1,106 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+
+# Just one TC job that runs all the lints.  There's no real advantage
+# to running them separately, and this way we perform the expensive
+# clone and somewhat expensive compilation of the Android
+# intermediates just once.
+lints:
+    always-target: true
+    attributes:
+        build_platform: android
+        build_type: opt
+        code-review: true
+    description: Android lints
+    platform: lint/opt
+    treeherder:
+        symbol: A(lints)
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: android-build}
+        env:
+            GRADLE_USER_HOME: /builds/worker/checkouts/gecko/mobile/android/gradle/dotgradle-offline
+            MOZCONFIG: mobile/android/config/mozconfigs/android-arm/nightly-android-lints
+            MOZ_OBJDIR: obj-firefox
+            PERFHERDER_EXTRA_OPTIONS: android-lints
+            TINDERBOX_OUTPUT: '1'
+        max-run-time: 3600
+        artifacts:
+            - type: file
+              name: public/code-review/mozlint.json
+              path: /builds/worker/mozlint.json
+            - name: public/android/geckoview/api.txt
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/intermediates/javac/withGeckoBinariesDebug/classes/api.txt
+              type: file
+            - name: public/android/geckoview/api.txt.map
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/intermediates/javac/withGeckoBinariesDebug/classes/api.txt.map
+              type: file
+            - name: public/android/geckoview/apilint-result.json
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/intermediates/javac/withGeckoBinariesDebug/classes/apilint-result.json
+              type: file
+            - name: public/android/geckoview/javadoc-results.json
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/reports/javadoc-results-withGeckoBinariesDebug.json
+              type: file
+            - name: public/geckoview/unittest
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/reports/tests
+              type: directory
+            - name: public/android/lint/lint-results-officialWithoutGeckoBinariesDebug.html
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/reports/lint-results-withGeckoBinariesDebug.html
+              type: file
+            - name: public/android/lint/lint-results-withGeckoBinariesDebug.xml
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/reports/lint-results-withGeckoBinariesDebug.xml
+              type: file
+            - name: public/android/checkstyle/checkstyle.html
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/reports/checkstyle/withGeckoBinariesDebug.html
+              type: file
+            - name: public/android/checkstyle/checkstyle.xml
+              path: /builds/worker/checkouts/gecko/obj-firefox/gradle/build/mobile/android/geckoview/reports/checkstyle/withGeckoBinariesDebug.xml
+              type: file
+    run:
+        using: run-task
+        command: >
+            ln -s $MOZ_FETCHES_DIR/android-gradle-dependencies $GECKO_PATH &&
+            ln -s $MOZ_FETCHES_DIR/android-sdk-linux $GECKO_PATH &&
+            ln -s $MOZ_FETCHES_DIR/node $GECKO_PATH &&
+            cd $GECKO_PATH &&
+            ./mach --log-no-times build pre-export export &&
+            ./mach --log-no-times lint -f treeherder -f json:/builds/worker/mozlint.json
+            --linter android-api-lint
+            --linter android-format
+            --linter android-javadoc
+            --linter android-checkstyle
+            --linter android-lint
+            --linter android-test
+            *
+        tooltool-downloads: internal  # For internal toolchains.
+    fetches:
+        toolchain:
+            # Aliases aren't allowed for toolchains installed by fetch.
+            - linux64-android-gradle-dependencies
+            - linux64-android-sdk-linux-repack
+            - linux64-jdk-repack
+            - linux64-node
+    when:
+        files-changed:
+            # Source files.
+            - 'mobile/android/**/*.java'
+            - 'mobile/android/**/*.kt'
+            # Resources.
+            - 'mobile/android/**/*.jpeg'
+            - 'mobile/android/**/*.jpg'
+            - 'mobile/android/**/*.png'
+            - 'mobile/android/**/*.svg'
+            - 'mobile/android/**/*.xml'
+            # Build stuff.
+            - 'mobile/android/**/Makefile.in'
+            - 'mobile/android/config/**'
+            - 'mobile/android/gradle.configure'
+            - 'mobile/android/**/moz.build'
+            - '**/*.gradle'
+            # Other misc lint related files.
+            - 'python/mozlint/**'
+            - 'tools/lint/**'
diff --git a/taskcluster/ci/source-test/mozlint.yml b/taskcluster/ci/source-test/mozlint.yml
new file mode 100644
index 0000000000..04d0554faf
--- /dev/null
+++ b/taskcluster/ci/source-test/mozlint.yml
@@ -0,0 +1,574 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    always-target: true
+    attributes:
+        code-review: true
+    treeherder:
+        kind: test
+        tier: 1
+    platform: lint/opt
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+        artifacts:
+            - type: file
+              name: public/code-review/mozlint.json
+              path: /builds/worker/mozlint.json
+    run:
+        using: mach
+    when:
+        files-changed:
+            # Other misc lint related files.
+            - 'python/mozlint/**'
+            - 'tools/lint/**'
+
+codespell:
+    description: Checks for misspellings in text files
+    treeherder:
+        symbol: text(spell)
+        # We don't want patches to be backed out because of a typo, a follow up bug will be
+        # good enough
+        tier: 2
+    run:
+        mach: lint -v -l codespell -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.js'
+            - '**/*.jsm'
+            - '**/*.jxs'
+            - '**/*.mjs'
+            - '**/*.xml'
+            - '**/*.html'
+            - '**/*.xhtml'
+            - '**/*.cpp'
+            - '**/*.c'
+            - '**/*.h'
+            - '**/*.configure'
+            - '**/*.py'
+            - '**/*.properties'
+            - '**/*.rst'
+            - '**/*.ftl'
+            - 'tools/lint/codespell.yml'
+
+
+rejected-words:
+    description: Reject some words we don't want to use in the code base
+    treeherder:
+        symbol: text(rejected-words)
+        # We don't want patches to be backed out because of this, a follow up bug will be
+        # good enough
+        tier: 2
+    run:
+        mach: lint -v -l rejected-words -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.js'
+            - '**/*.jsm'
+            - '**/*.jxs'
+            - '**/*.mjs'
+            - '**/*.xml'
+            - '**/*.html'
+            - '**/*.xhtml'
+            - '**/*.cpp'
+            - '**/*.c'
+            - '**/*.h'
+            - '**/*.idl'
+            - '**/*.webidl'
+            - '**/*.configure'
+            - '**/*.py'
+            - '**/*.properties'
+            - '**/*.rst'
+            - '**/*.ftl'
+            - '**/*.java'
+            - '**/*.kt'
+            - 'tools/lint/rejected-words.yml'
+
+eslint:
+    description: JS lint check
+    treeherder:
+        symbol: js(ES)
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            cp -r /build/node_modules_eslint node_modules &&
+            cp -r /build/node_modules_eslint-plugin-mozilla/ tools/lint/eslint/eslint-plugin-mozilla/node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
+            ./mach lint -v -l eslint -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            # Files that are likely audited.
+            - '**/*.js'
+            - '**/*.jsm'
+            - '**/*.json'
+            - '**/*.jsx'
+            - '**/*.mjs'
+            - '**/*.sjs'
+            - '**/*.html'
+            - '**/*.xhtml'
+            - '**/*.xml'
+            - 'tools/lint/eslint.yml'
+            # Run when eslint policies change.
+            - '**/.eslintignore'
+            - '**/*eslintrc*'
+            # The plugin implementing custom checks.
+            - 'tools/lint/eslint/eslint-plugin-mozilla/**'
+            - 'tools/lint/eslint/eslint-plugin-spidermonkey-js/**'
+
+eslint-build:
+    description: ESLint checks with build data
+    always-target: false
+    # Triggered by cron task, don't run on any projects and disable optimization.
+    run-on-projects: []
+    when: null
+    attributes:
+        code-review: false
+    treeherder:
+        symbol: js(ES-B)
+        tier: 2
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            export MOZ_XPT_ARTIFACTS_DIR="$MOZ_FETCHES_DIR/$MOZ_XPT_ARTIFACTS_DIRNAME" &&
+            find "$MOZ_XPT_ARTIFACTS_DIR" &&
+            cp -r /build/node_modules_eslint node_modules &&
+            cp -r /build/node_modules_eslint-plugin-mozilla/ tools/lint/eslint/eslint-plugin-mozilla/node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
+            ./mach lint -v -l eslint -f treeherder --quiet -f json:/builds/worker/mozlint.json . --rule "mozilla/valid-services-property: error" --rule "mozilla/valid-ci-uses: error"
+    worker:
+        env:
+            MOZ_XPT_ARTIFACTS_DIRNAME: xpt_artifacts
+    require-build:
+        .*: build-linux64/opt
+    fetches:
+        build:
+            - artifact: target.xpt_artifacts.zip
+              dest: xpt_artifacts
+
+stylelint:
+    description: CSS lint check
+    treeherder:
+        symbol: stylelint
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            cp -r /build/node_modules_eslint node_modules &&
+            ./mach lint -v -l stylelint -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            # Files that are likely audited.
+            - '**/*.css'
+            - 'tools/lint/styleint.yml'
+            # Run when stylelint policies change.
+            - '**/.stylelintignore'
+            - '**/*stylelintrc*'
+
+license:
+    description: Check for license blocks in source files.
+    treeherder:
+        symbol: pedantic(license)
+    run:
+        mach: lint -v -l license -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.c'
+            - '**/*.cc'
+            - '**/*.cpp'
+            - '**/*.css'
+            - '**/*.dtd'
+            - '**/*.ftl'
+            - '**/*.h'
+            - '**/*.html'
+            - '**/*.js'
+            - '**/*.jsm'
+            - '**/*.jsx'
+            - '**/*.m'
+            - '**/*.mjs'
+            - '**/*.mm'
+            - '**/*.properties'
+            - '**/*.py'
+            - '**/*.rs'
+            - '**/*.svg'
+            - '**/*.xhtml'
+            - '**/*.xml'
+            - '**/*.xul'
+            - 'tools/lint/license.yml'
+
+lintpref:
+    description: Check for duplicates between all.js and StaticPrefList.yaml.
+    treeherder:
+        symbol: misc(pref)
+    run:
+        mach: lint -v -l lintpref -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - 'modules/libpref/init/all.js'
+            - 'modules/libpref/init/StaticPrefList.yaml'
+            - 'browser/app/profile/firefox.js'
+            - 'mobile/android/app/mobile.js'
+            - 'devtools/client/preferences/debugger.js'
+            - 'mobile/android/app/geckoview-prefs.js'
+            - 'browser/branding/official/pref/firefox-branding.js'
+            - 'browser/branding/nightly/pref/firefox-branding.js'
+            - 'browser/branding/unofficial/pref/firefox-branding.js'
+            - 'browser/branding/aurora/pref/firefox-branding.js'
+            - 'browser/app/profile/channel-prefs.js'
+            - 'mobile/android/installer/mobile-l10n.js'
+            - 'mobile/android/locales/en-US/mobile-l10n.js'
+            - 'tools/lint/lintpref.yml'
+
+mingw-cap:
+    description: lint for MinGW Capitalization issues
+    treeherder:
+        symbol: misc(mingw)
+    run:
+        mach: lint -v -l mingw-capitalization -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.cpp'
+            - '**/*.cc'
+            - '**/*.c'
+            - '**/*.h'
+            - 'tools/lint/mingw-capitalization.yml'
+
+updatebot:
+    description: Ensure moz.yaml files are valid per schema
+    treeherder:
+        symbol: misc(mozyaml)
+    run:
+        mach: lint -v -l updatebot -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/moz.yaml'
+
+mscom-init:
+    description: Lint for Microsoft COM initialization
+    treeherder:
+        symbol: misc(mscom)
+    run:
+        mach: lint -v -l mscom-init -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.cpp'
+            - '**/*.cc'
+            - '**/*.c'
+            - '**/*.h'
+            - 'tools/lint/mscom-init.yml'
+
+py-black:
+    description: black run over the gecko codebase
+    treeherder:
+        symbol: py(black)
+    run:
+        mach: lint -v -l black -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            # The list of extensions should match tools/lint/black.yml
+            - '**/*.py'
+            - '**/moz.build'
+            - '**/*.configure'
+            - '**/*.mozbuild'
+            - 'pyproject.toml'
+            - 'tools/lint/black.yml'
+
+py-ruff:
+    description: Run ruff over the gecko codebase
+    treeherder:
+        symbol: py(ruff)
+    run:
+        mach: lint -v -l ruff -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.py'
+            - '**/*.configure'
+            - '**/.ruff.toml'
+            - 'pyproject.toml'
+            - 'tools/lint/ruff.yml'
+            - 'tools/lint/python/ruff.py'
+            - 'tools/lint/python/ruff_requirements.txt'
+
+test-manifest:
+    description: lint test manifests
+    treeherder:
+        symbol: misc(tm)
+    run:
+        mach: lint -v -l test-manifest-alpha -l test-manifest-disable -l test-manifest-skip-if -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.ini'
+            - 'python/mozlint/**'
+            - 'tools/lint/**'
+            - 'tools/lint/test-disable.yml'
+
+wptlint-gecko:
+    description: web-platform-tests linter
+    treeherder:
+        symbol: misc(W)
+    run:
+        mach: lint -v -l wpt -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - 'testing/web-platform/tests/**'
+            - 'testing/web-platform/mozilla/tests/**'
+            - 'tools/lint/wpt.yml'
+
+yaml:
+    description: yamllint run over the gecko codebase
+    treeherder:
+        symbol: pedantic(yaml)
+    run:
+        mach: lint -v -l yaml -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.yml'
+            - '**/*.yaml'
+            - '**/.ymllint'
+
+rst:
+    description: rst lint run over the gecko codebase
+    treeherder:
+        symbol: text(rst)
+    run:
+        mach: lint -v -l rst -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.rst'
+            - 'tools/lint/rst.yml'
+
+shellcheck:
+    description: shellcheck run over the gecko codebase
+    treeherder:
+        symbol: misc(shell)
+    run:
+        mach: lint -v -l shellcheck -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.sh'
+            - 'tools/lint/shellcheck.yml'
+
+
+localization:
+    description: l10n tests for strings with errors
+    treeherder:
+        symbol: l10n(l1nt)
+    run:
+        mach: lint -v -l l10n -f treeherder *
+    attributes:
+        code-review: false
+    when:
+        files-changed:
+            - '**/locales/en-US/**'
+            - '**/l10n.toml'
+            - 'third_party/python/compare-locales/**'
+            - 'third_party/python/fluent/**'
+            - 'tools/lint/l10n.yml'
+
+
+l10n-conflicts:
+    description: l10n tests for strings with errors and conflicts with cross-channel
+    treeherder:
+        symbol: l10n(l1nt-conflicts)
+    always-target: false
+    run-on-projects: []
+    run:
+        mach: lint -W -l l10n -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/locales/en-US/**'
+            - '**/l10n.toml'
+            - 'third_party/python/compare-locales/**'
+            - 'third_party/python/fluent/**'
+            - 'tools/lint/l10n.yml'
+
+
+clang-format:
+    description: clang-format on the C/C++ code
+    treeherder:
+        symbol: cpp(clang-format)
+    run:
+        mach: lint -v -l clang-format -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.cpp'
+            - '**/*.c'
+            - '**/*.cc'
+            - '**/*.h'
+            - '**/*.m'
+            - '**/*.mm'
+            - 'tools/lint/clang-format.yml'
+    dependencies:
+        linux64-clang-tidy: toolchain-linux64-clang-tidy
+    fetches:
+        linux64-clang-tidy:
+            - artifact: clang-tidy.tar.zst
+              dest: clang-tools
+
+
+rustfmt:
+    description: rustfmt on the Rust code
+    treeherder:
+        symbol: rust(rustfmt)
+    run:
+        mach: lint -v -l rustfmt -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.rs'
+            - 'tools/lint/rustfmt.yml'
+    fetches:
+        toolchain:
+            - linux64-rust
+
+
+clippy:
+    description: clippy on the Rust code
+    treeherder:
+        symbol: rust(clippy)
+    run:
+        mach: lint -v -l clippy -f treeherder -f json:/builds/worker/mozlint.json -j 1 .
+    when:
+        files-changed:
+            - '**/*.rs'
+            - '**/Cargo.toml'
+            - 'tools/lint/clippy.yml'
+    fetches:
+        toolchain:
+            - linux64-rust
+
+
+file-whitespace:
+    description: Check for trailing whitespaces and Windows CR
+    platform: lint/opt
+    treeherder:
+        symbol: pedantic(file-whitespace)
+        # We don't want patches to be backed out because of this, a follow up bug will be
+        # good enough
+        tier: 2
+    run:
+        mach: lint -v -l file-whitespace -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.c'
+            - '**/*.cc'
+            - '**/*.cpp'
+            - '**/*.css'
+            - '**/*.dtd'
+            - '**/*.idl'
+            - '**/*.ftl'
+            - '**/*.h'
+            - '**/*.html'
+            - '**/*.md'
+            - '**/*.properties'
+            - '**/*.py'
+            - '**/*.rs'
+            - '**/*.rst'
+            - '**/*.webidl'
+            - '**/*.xhtml'
+            - 'tools/lint/file-whitespace.yml'
+
+
+file-perm:
+    description: Check for incorrect permissions on source files
+    platform: lint/opt
+    treeherder:
+        symbol: pedantic(file-perm)
+        # We don't want patches to be backed out because of this, a follow up bug will be
+        # good enough
+        tier: 2
+    run:
+        mach: lint -v -l file-perm -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.build'
+            - '**/*.c'
+            - '**/*.cc'
+            - '**/*.cpp'
+            - '**/*.flac'
+            - '**/*.h'
+            - '**/*.html'
+            - '**/*.idl'
+            - '**/*.js'
+            - '**/*.jsm'
+            - '**/*.jsx'
+            - '**/*.m'
+            - '**/*.m4s'
+            - '**/*.md'
+            - '**/*.mjs'
+            - '**/*.mm'
+            - '**/*.mozbuild'
+            - '**/*.mp4'
+            - '**/*.png'
+            - '**/*.rs'
+            - '**/*.rst'
+            - '**/*.svg'
+            - '**/*.ttf'
+            - '**/*.wasm'
+            - '**/*.webidl'
+            - '**/*.xhtml'
+            - '**/*.xml'
+            - '**/*.xul'
+            - '**/*.yml'
+            - 'tools/lint/file-perm.yml'
+
+
+perfdocs-verify:
+    description: Verifies Performance Testing documentation
+    treeherder:
+        symbol: text(perfdocs)
+    run:
+        mach: lint -v -l perfdocs -f treeherder -f json:/builds/worker/mozlint.json .
+    worker:
+        env:
+            WORKSPACE: /builds/worker/checkouts/gecko/
+            DECISION_TASK_ID: {task-reference: <decision>}
+        artifacts:
+            - type: file
+              name: public/perfdocs.diff
+              path: /builds/worker/diff.txt
+    when:
+        files-changed:
+            - 'taskcluster/**'
+            - '**/perftest.ini'
+            - 'python/mozperftest/**'
+            - 'testing/**/*.ini'
+            - 'testing/**/*.yml'
+            - 'testing/**/*.rst'
+            - 'tools/lint/perfdocs.yml'
+
+
+fluent-lint:
+    description: Check for problems with Fluent files.
+    platform: lint/opt
+    treeherder:
+        symbol: l10n(fluent)
+    run:
+        mach: lint --linter fluent-lint -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.ftl'
+            - 'tools/lint/fluent-lint.yml'
+            - 'tools/lint/fluent-lint/exclusions.yml'
+
+trojan-source:
+    description: Trojan Source attack - CVE-2021-42572
+    platform: lint/opt
+    treeherder:
+        symbol: misc(trojan-source)
+    run:
+        mach: lint -v -l trojan-source --include-third-party -f treeherder -f json:/builds/worker/mozlint.json .
+    when:
+        files-changed:
+            - '**/*.c'
+            - '**/*.cc'
+            - '**/*.cpp'
+            - '**/*.h'
+            - '**/*.py'
+            - '**/*.rs'
+            - 'tools/lint/trojan-source.yml'
diff --git a/taskcluster/ci/source-test/node.yml b/taskcluster/ci/source-test/node.yml
new file mode 100644
index 0000000000..4dcc43f521
--- /dev/null
+++ b/taskcluster/ci/source-test/node.yml
@@ -0,0 +1,159 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+newtab-unit-tests:
+    description: newtab unit tests
+    platform: linux1804-64/opt
+    treeherder:
+        symbol: node(newtab)
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "ubuntu1804-test"}
+        max-run-time: 1800
+    require-build:
+        by-project:
+            autoland:
+                linux1804-64/opt: build-linux64/opt
+            try:
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64/opt: build-linux64-shippable/opt
+    run:
+        using: run-task
+        cache-dotcache: true
+        cwd: '{checkout}'
+        command: >
+            cd /builds/worker/checkouts/gecko/browser/components/newtab &&
+            npm install &&
+            node bin/try-runner.js
+    when:
+        files-changed:
+            - "browser/components/newtab/**"
+
+newtab-unit-tests-ccov:
+    description: newtab unit tests code coverage
+    platform: linux1804-64/opt
+    treeherder:
+        symbol: node(newtab-ccov)
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "ubuntu1804-test"}
+        max-run-time: 1800
+        artifacts:
+            - name: public/code-coverage-grcov.zip
+              path: /builds/worker/checkouts/gecko/browser/components/newtab/logs/coverage/code-coverage-grcov.zip
+              type: file
+    require-build:
+        by-project:
+            try:
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64/opt: build-linux64-shippable/opt
+    run:
+        using: run-task
+        cache-dotcache: true
+        cwd: '{checkout}'
+        command: >
+            cd /builds/worker/checkouts/gecko/browser/components/newtab &&
+            npm install &&
+            node bin/try-runner.js
+    run-on-projects: ["mozilla-central"]
+
+devtools-tests:
+    description: devtools node-based tests (for instance jest)
+    platform: linux1804-64/opt
+    attributes:
+        code-review: true
+    treeherder:
+        symbol: node(devtools)
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+        artifacts:
+            - type: file
+              name: public/code-review/issues.json
+              path: /builds/worker/issues.json
+    run:
+        using: run-task
+        cache-dotcache: true
+        cwd: '{checkout}'
+        # Re-use rather than re-installing to avoid hitting/requiring
+        # nodejs servers for downloads
+        command: >
+            cp -r /build/node_modules_eslint node_modules &&
+            cp -r /build/node_modules_eslint-plugin-mozilla/ tools/lint/eslint/eslint-plugin-mozilla/node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
+            cd devtools/client/bin/ &&
+            node devtools-node-test-runner.js --suite=all --artifact=/builds/worker/issues.json
+    when:
+        files-changed:
+            - 'devtools/client/**'
+            - 'devtools/shared/**'
+
+devtools-verify-bundle:
+    description: devtools bundle checker
+    platform: linux1804-64/opt
+    attributes:
+        code-review: true
+    treeherder:
+        symbol: node(devtools-bundle)
+        kind: test
+        tier: 2
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1200
+        artifacts:
+            - type: file
+              name: public/code-review/issues.json
+              path: /builds/worker/issues.json
+    run:
+        using: run-task
+        cache-dotcache: true
+        cwd: '{checkout}'
+        # Re-use rather than re-installing to avoid hitting/requiring
+        # nodejs servers for downloads
+        command: >
+            cp -r /build/node_modules_eslint node_modules &&
+            cp -r /build/node_modules_eslint-plugin-mozilla/ tools/lint/eslint/eslint-plugin-mozilla/node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-mozilla node_modules &&
+            ln -s ../tools/lint/eslint/eslint-plugin-spidermonkey-js node_modules &&
+            cd devtools/client/debugger &&
+            yarn &&
+            node bin/bundle.js &&
+            cd ../../.. &&
+            ./mach python taskcluster/scripts/misc/verify-devtools-bundle.py --output /builds/worker/issues.json
+    when:
+        files-changed:
+            - 'devtools/**'
+
+eslint-plugin-mozilla:
+    description: eslint-plugin-mozilla integration tests
+    platform: linux1804-64/opt
+    treeherder:
+        symbol: node(epm)
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+    run:
+        using: run-task
+        cache-dotcache: true
+        cwd: '{checkout}/tools/lint/eslint/eslint-plugin-mozilla'
+        command: >
+            cp -r /build/node_modules_eslint-plugin-mozilla node_modules &&
+            npm run test
+    when:
+        files-changed:
+            - 'tools/lint/eslint/eslint-plugin-mozilla/**'
diff --git a/taskcluster/ci/source-test/puppeteer.yml b/taskcluster/ci/source-test/puppeteer.yml
new file mode 100644
index 0000000000..b4bd898d1f
--- /dev/null
+++ b/taskcluster/ci/source-test/puppeteer.yml
@@ -0,0 +1,52 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: linux1804-64/opt
+    require-build:
+        by-project:
+            try:
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64/opt: build-linux64-shippable/opt
+    fetches:
+        build:
+            - target.tar.bz2
+        toolchain:
+            - linux64-node
+    treeherder:
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: ubuntu1804-test}
+        max-run-time: 3600
+        artifacts:
+            - type: file
+              name: public/remote/pup_errorsummary.json
+              path: /builds/worker/pup_errorsummary.json
+    optimization:
+        skip-unless-expanded: null
+
+puppeteer:
+    description: Puppeteer tests against Firefox CDP-based remote protocol
+    treeherder:
+        symbol: Pup(cdp)
+    run:  # Bug 1651542: Use screenshot feature to warm-up the font cache before the actual test
+        using: run-task
+        command: >
+            cd $GECKO_PATH/ &&
+            $MOZ_FETCHES_DIR/firefox/firefox --screenshot http://example.org &&
+            ./mach puppeteer-test --ci -vv --binary $MOZ_FETCHES_DIR/firefox/firefox --headless --log-tbpl - --log-errorsummary /builds/worker/pup_errorsummary.json
+
+puppeteer-with-bidi:
+    description: Puppeteer tests against Firefox Webdriver BiDi remote protocol
+    treeherder:
+        symbol: Pup(wd)
+    run:  # Bug 1651542: Use screenshot feature to warm-up the font cache before the actual test
+        using: run-task
+        command: >
+            cd $GECKO_PATH/ &&
+            $MOZ_FETCHES_DIR/firefox/firefox --screenshot http://example.org &&
+            ./mach puppeteer-test --ci -vv --binary $MOZ_FETCHES_DIR/firefox/firefox --bidi --log-tbpl - --log-errorsummary /builds/worker/pup_errorsummary.json
diff --git a/taskcluster/ci/source-test/python.yml b/taskcluster/ci/source-test/python.yml
new file mode 100644
index 0000000000..691a6da6da
--- /dev/null
+++ b/taskcluster/ci/source-test/python.yml
@@ -0,0 +1,622 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: linux1804-64/opt
+    always-target:
+        by-platform:
+            macosx.*: false
+            default: true
+    worker-type:
+        by-platform:
+            linux1804-64.*: t-linux-xlarge-source
+            macosx1015-64.*: t-osx-1015-r8
+            windows11-64.*: win11-64-2009-source
+    worker:
+        by-platform:
+            linux1804-64.*:
+                docker-image: {in-tree: "lint"}
+                max-run-time: 3600
+            macosx.*:
+                max-run-time: 3600
+                env:
+                    PATH: "/usr/local/bin:/bin:/sbin:/usr/bin:/usr/sbin"
+            default:
+                max-run-time: 3600
+    treeherder:
+        kind: test
+        tier: 1
+    run:
+        using: mach
+    when:
+        files-changed:
+            - 'config/mozunit/**'
+            - 'python/mach_commands.py'
+
+firefox-ci:
+    description: taskcluster/gecko_taskgraph unit tests
+    always-target: false
+    python-version: [3]
+    treeherder:
+        symbol: ci
+    run:
+        using: python-test
+        subsuite: ci
+    when:
+        files-changed:
+            - '.taskcluster.yml'
+            - 'taskcluster/ci/**'
+            - 'taskcluster/**/*.py'
+            - 'tools/tryselect/selectors/auto.py'
+
+fog:
+    description: Python unit tests for Firefox on Glean
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: fp
+    run:
+        using: python-test
+        subsuite: fog
+    when:
+        files-changed:
+            - 'toolkit/components/glean/**'
+
+mach:
+    description: python/mach unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: mach
+    run:
+        using: python-test
+        subsuite: mach
+    when:
+        files-changed:
+            - 'python/mach/**'
+            - 'python/sites/**'
+
+marionette-harness:
+    description: testing/marionette/harness unit tests
+    platform:
+        - linux1804-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: mnh
+    run:
+        using: python-test
+        subsuite: marionette-harness
+    when:
+        files-changed:
+            - 'testing/marionette/harness/**'
+            - 'testing/mozbase/mozlog/mozlog/**'
+            - 'testing/mozbase/mozlog/setup.py'
+
+mochitest-harness:
+    description: testing/mochitest unittests
+    platform:
+        - linux1804-64/opt
+        - linux1804-64/debug
+        - linux1804-64-asan/opt
+    always-target: false
+    require-build:
+        by-project:
+            try:
+                linux1804-64-asan/opt: build-linux64-asan/opt
+                linux1804-64/debug: build-linux64/debug
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64-asan/opt: build-linux64-asan/opt
+                linux1804-64/debug: build-linux64/debug
+                linux1804-64/opt: build-linux64-shippable/opt
+    treeherder:
+        symbol: py3(mch)
+    worker:
+        by-platform:
+            linux1804-64.*:
+                docker-image: {in-tree: "ubuntu1804-test"}
+                max-run-time: 3600
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            source /builds/worker/scripts/xvfb.sh &&
+            start_xvfb '1600x1200x24' 0 &&
+            export GECKO_BINARY_PATH=$MOZ_FETCHES_DIR/firefox/firefox &&
+            export TEST_HARNESS_ROOT=$MOZ_FETCHES_DIR/tests &&
+            ./mach python-test --subsuite mochitest
+    fetches:
+        build:
+            - target.tar.bz2
+            - artifact: target.common.tests.tar.gz
+              dest: tests
+            - artifact: target.mochitest.tests.tar.gz
+              dest: tests
+        toolchain:
+            - linux64-fix-stacks
+    when:
+        files-changed:
+            - 'testing/mochitest/**'
+            - 'testing/mozbase/mozrunner/mozrunner/**'
+            - 'testing/mozbase/moztest/moztest/selftest/**'
+            - 'testing/mozharness/mozharness/base/log.py'
+            - 'testing/mozharness/mozharness/mozilla/structuredlog.py'
+            - 'testing/mozharness/mozharness/mozilla/testing/errors.py'
+            - 'testing/profiles/**'
+
+
+mozbase:
+    description: testing/mozbase unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: mb
+    run:
+        using: python-test
+        subsuite: mozbase
+    when:
+        files-changed:
+            - 'testing/mozbase/**'
+
+mozharness:
+    description: mozharness integration tests
+    treeherder:
+        symbol: py3(mh)
+    run:
+        using: run-task
+        cache-dotcache: true
+        cwd: '{checkout}/testing/mozharness'
+        command: >
+            /usr/local/bin/tox -e py39-hg5.2
+    when:
+        files-changed:
+            - 'testing/mozharness/**'
+
+mozlint:
+    description: python/mozlint unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: mozlint
+        tier: 2
+    run:
+        using: python-test
+        subsuite: mozlint
+    dependencies:
+        clang-tidy:
+            by-platform:
+                linux1804-64/opt: toolchain-linux64-clang-tidy
+                macosx1015-64/opt: toolchain-macosx64-clang-tidy
+                windows11-64/opt: toolchain-win64-clang-tidy
+    fetches:
+        toolchain:
+            by-platform:
+                linux1804-64/opt:
+                    - linux64-node
+                    - linux64-rust
+                macosx1015-64/opt:
+                    - macosx64-node
+                    - macosx64-rust
+                windows11-64/opt:
+                    - win64-node
+                    - win64-rust
+        clang-tidy:
+            - artifact: clang-tidy.tar.zst
+              dest: clang-tools
+    when:
+        files-changed:
+            - 'python/mozlint/**'
+            - 'tools/lint/**'
+
+mozrelease:
+    description: python/mozrelease unit tests
+    python-version: [3]
+    treeherder:
+        symbol: release
+    run:
+        using: python-test
+        subsuite: mozrelease
+    when:
+        files-changed:
+            - 'python/mozrelease/**'
+
+mozterm:
+    description: python/mozterm unit tests
+    platform:
+        - linux1804-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: term
+    run:
+        using: python-test
+        subsuite: mozterm
+    when:
+        files-changed:
+            - 'python/mozterm/**'
+
+mozversioncontrol:
+    description: python/mozversioncontrol unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: vcs
+    run:
+        using: python-test
+        subsuite: mozversioncontrol
+    when:
+        files-changed:
+            - 'python/mozversioncontrol/**'
+
+raptor:
+    description: testing/raptor unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: rap
+    run:
+        using: python-test
+        subsuite: raptor
+    when:
+        files-changed:
+            - 'testing/raptor/**'
+
+reftest-harness:
+    description: layout/tools/reftest unittests
+    platform:
+        - linux1804-64/opt
+        - linux1804-64/debug
+        - linux1804-64-asan/opt
+    require-build:
+        by-project:
+            try:
+                linux1804-64-asan/opt: build-linux64-asan/opt
+                linux1804-64/debug: build-linux64/debug
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64-asan/opt: build-linux64-asan/opt
+                linux1804-64/debug: build-linux64/debug
+                linux1804-64/opt: build-linux64-shippable/opt
+    always-target: false
+    treeherder:
+        symbol: py3(ref)
+    worker:
+        by-platform:
+            linux1804-64.*:
+                docker-image: {in-tree: "ubuntu1804-test"}
+                max-run-time: 3600
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            source /builds/worker/scripts/xvfb.sh &&
+            start_xvfb '1600x1200x24' 0 &&
+            export GECKO_BINARY_PATH=$MOZ_FETCHES_DIR/firefox/firefox &&
+            export TEST_HARNESS_ROOT=$MOZ_FETCHES_DIR/tests &&
+            ./mach python-test --subsuite reftest
+    fetches:
+        build:
+            - target.tar.bz2
+            - artifact: target.common.tests.tar.gz
+              dest: tests
+            - artifact: target.reftest.tests.tar.gz
+              dest: tests
+        toolchain:
+            - linux64-fix-stacks
+    when:
+        files-changed:
+            - 'layout/tools/reftest/**'
+            - 'testing/mozbase/mozrunner/mozrunner/**'
+            - 'testing/mozbase/moztest/moztest/selftest/**'
+            - 'testing/mozharness/mozharness/base/log.py'
+            - 'testing/mozharness/mozharness/mozilla/structuredlog.py'
+            - 'testing/mozharness/mozharness/mozilla/testing/errors.py'
+
+taskgraph-tests:
+    description: taskcluster/gecko_taskgraph unit tests
+    python-version: [3]
+    treeherder:
+        symbol: tg
+    run:
+        using: python-test
+        subsuite: taskgraph
+    when:
+        files-changed:
+            - 'taskcluster/**/*.py'
+            - 'python/mach/**/*.py'
+
+tryselect:
+    description: tools/tryselect unit tests
+    platform:
+        - linux1804-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: try
+    run:
+        using: python-test
+        subsuite: try
+    when:
+        files-changed:
+            - 'taskcluster/ci/config.yml'
+            - 'taskcluster/ci/test/**'
+            - 'taskcluster/gecko_taskgraph/transforms/**'
+            - 'tools/tryselect/**'
+
+mozbuild:
+    description: mozbuild unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: mbu
+    run:
+        using: python-test
+        subsuite: mozbuild
+    fetches:
+        toolchain:
+            by-platform:
+                linux1804-64/opt:
+                    - linux64-node-12
+                macosx1015-64/opt:
+                    - macosx64-node-12
+                windows11-64/opt:
+                    - win64-node-12
+                    - win64-mozmake
+    when:
+        files-changed:
+            - '**/moz.configure'
+            - 'build/moz.configure/**'
+            - 'config/tests/**'
+            - 'dom/bindings/mozwebidlcodegen/**'
+            - 'modules/libpref/init/**'
+            - 'modules/libpref/test/**'
+            - 'python/mach/**'
+            - 'python/mozboot/**'
+            - 'python/mozbuild/**'
+            - 'python/mozterm/**'
+            - 'python/mozversioncontrol/**'
+            - 'testing/mozbase/**'
+            - 'testing/xpcshell/xpcshellcommandline.py'
+
+mozperftest:
+    description: mozperftest unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    treeherder:
+        symbol: mpu
+    run:
+        mach: perftest-test
+    fetches:
+        toolchain:
+            by-platform:
+                linux1804-64/opt:
+                    - linux64-node
+                macosx1015-64/opt:
+                    - macosx64-node
+                windows11-64/opt:
+                    - win64-node
+    when:
+        files-changed:
+            - 'testing/performance/**'
+            - 'python/mozperftest/**'
+
+fxms-schemas:
+    description: >
+        Ensure messaging-system schemas are up-to-date and run Experimenter
+        integration tests.
+    platform:
+        - linux1804-64/opt
+    treeherder:
+        symbol: py3(fxms)
+    require-build:
+        by-project:
+            try:
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64/opt: build-linux64/opt
+    fetches:
+        build:
+            - artifact: target.tar.bz2
+            - artifact: target.common.tests.tar.gz
+    worker:
+        by-platform:
+            linux1804-64.*:
+                docker-image: {in-tree: "ubuntu1804-test"}
+                max-run-time: 3600
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            cd browser/components/newtab/content-src/asrouter/schemas &&
+            env LD_LIBRARY_PATH=${MOZ_FETCHES_DIR}/firefox \
+                ${MOZ_FETCHES_DIR}/bin/xpcshell \
+                    -g ${MOZ_FETCHES_DIR}/firefox \
+                    -a ${MOZ_FETCHES_DIR}/firefox/browser \
+                    extract-test-corpus.js
+            ../../../../../../mach python -- make-schemas.py --check
+    when:
+        files-changed:
+            - 'browser/components/newtab/content-src/asrouter/schemas/extract-test-corpus.js'
+            - 'browser/components/newtab/content-src/asrouter/schemas/make-schemas.py'
+            - 'browser/components/newtab/content-src/**/*.schema.json'
+            - 'browser/components/newtab/lib/CFRMessageProvider.sys.mjs'
+            - 'browser/components/newtab/lib/OnboardingMessageProvider.jsm'
+            - 'browser/components/newtab/lib/PanelTestProvider.sys.mjs'
+
+condprof:
+    description: testing/condprofile unit tests
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: condprof
+    run:
+        using: python-test
+        subsuite: condprof
+    when:
+        files-changed:
+            - 'testing/condprofile/condprof**'
+            - 'testing/condprofile/setup.py'
+
+featuregates:
+    description: featuregates Python unit tests
+    platform:
+        - linux1804-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: fg
+    run:
+        using: python-test
+        subsuite: featuregates
+    fetches:
+        toolchain:
+            by-platform:
+                linux1804-64/opt:
+                    - linux64-node
+                windows11-64/opt:
+                    - win64-node
+    when:
+        files-changed:
+            - 'toolkit/components/featuregates/**'
+
+talos:
+    description: testing/talos unit tests
+    platform: windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: tal
+    run:
+        using: python-test
+        subsuite: talos
+    when:
+        files-changed:
+            - 'testing/talos/**'
+
+telemetry-integration-tests:
+    description: pytest-based integration tests for Telemetry
+    always-target: false
+    platform:
+        - linux1804-64/opt
+    worker:
+        by-platform:
+            linux1804-64.*:
+                docker-image: {in-tree: "ubuntu1804-test"}
+                max-run-time: 3600
+    require-build:
+        by-project:
+            try:
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64/opt: build-linux64-shippable/opt
+    treeherder:
+        symbol: tt(i)
+        tier: 3
+    run-on-projects: []
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            source /builds/worker/scripts/xvfb.sh &&
+            start_xvfb '1600x1200x24' 0 &&
+            export GECKO_BINARY_PATH=$MOZ_FETCHES_DIR/firefox/firefox &&
+            ./mach python-test --subsuite telemetry-integration-tests
+    fetches:
+        build:
+            - target.tar.bz2
+            - artifact: target.common.tests.tar.gz
+              dest: tests
+            - artifact: target.reftest.tests.tar.gz
+              dest: tests
+    when:
+        files-changed:
+            - 'toolkit/components/telemetry/**'
+
+telemetry-python:
+    description: Python unit tests for Telemetry
+    platform:
+        - linux1804-64/opt
+        - macosx1015-64/opt
+        - windows11-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: tp
+    run:
+        using: python-test
+        subsuite: telemetry-python
+    fetches:
+        toolchain:
+            by-platform:
+                linux1804-64/opt:
+                    - linux64-node
+                macosx1015-64/opt:
+                    - macosx64-node
+                windows11-64/opt:
+                    - win64-node
+    when:
+        files-changed:
+            - 'toolkit/components/telemetry/**'
+
+webext:
+    description: WebExtensions python utilities unit tests
+    platform:
+        - linux1804-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: webext-py
+        tier: 2
+    run:
+        using: python-test
+        subsuite: webext-python
+    when:
+        files-changed:
+            - 'toolkit/components/extensions/webidl-api/**'
+            - 'toolkit/components/extensions/schemas/*.json'
+            - 'browser/components/extensions/schemas/*.json'
+            - 'mobile/android/components/extensions/schemas/*.json'
+
+xpcom:
+    description: xpcom unit tests
+    platform:
+        - linux1804-64/opt
+    python-version: [3]
+    treeherder:
+        symbol: xpcom
+    run:
+        using: python-test
+        subsuite: xpcom
+    when:
+        files-changed:
+            - 'third_party/python/ply/**'
+            - 'xpcom/components/*.py'
+            - 'xpcom/components/test/**'
+            - 'xpcom/ds/tools/**'
+            - 'xpcom/ds/test/**'
+            - 'xpcom/idl-parser/**'
diff --git a/taskcluster/ci/source-test/shadow-scheduler.yml b/taskcluster/ci/source-test/shadow-scheduler.yml
new file mode 100644
index 0000000000..97d1b1f30b
--- /dev/null
+++ b/taskcluster/ci/source-test/shadow-scheduler.yml
@@ -0,0 +1,178 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: gecko-decision/opt
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 3600
+        artifacts:
+            - type: file
+              name: public/shadow-scheduler/optimized-tasks.json
+              path: /builds/worker/optimized-tasks.json
+        env:
+            DECISION_TASK_ID: {task-reference: <decision>}
+    treeherder:
+        kind: other
+        tier: 3
+    run-on-projects: ['autoland-only']
+    run:
+        using: mach
+        mach: taskgraph optimized -v --json -p task-id=$DECISION_TASK_ID --output-file /builds/worker/optimized-tasks.json
+        sparse-profile: taskgraph
+
+relevant_tests:
+    description: Runs the relevant_tests optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(relevant_tests)
+    index:
+        product: source
+        job-name: shadow-scheduler-relevant_tests
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.relevant_tests
+
+bugbug_tasks_medium:
+    description: Runs the bugbug_tasks_medium optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_tasks_medium)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_tasks_medium
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_tasks_medium
+
+bugbug_tasks_high:
+    description: Runs the bugbug_tasks_high optimization strategy (with a high confidence threshold) instead of the default.
+    treeherder:
+        symbol: SS(bugbug_tasks_high)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_tasks_high
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_tasks_high
+
+bugbug_debug_disperse:
+    description: Runs the bugbug_debug_disperse optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_debug_disperse)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_debug_disperse
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_debug_disperse
+
+bugbug_disperse_low:
+    description: Runs the bugbug_disperse_low optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_disperse_low)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_disperse_low
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_disperse_low
+
+bugbug_disperse_medium:
+    description: Runs the bugbug_disperse_medium optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_disperse_med)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_disperse_medium
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_disperse_medium
+
+bugbug_disperse_reduced_medium:
+    description: Runs the bugbug_disperse_reduced_medium optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_di_r_med_noun)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_disperse_reduced_medium
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_disperse_reduced_medium
+
+bugbug_reduced_manifests_config_selection_low:
+    description: Runs the bugbug_reduced_manifests_config_selection_low optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_r_c_s_low)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_reduced_manifests_config_selection_low
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_reduced_manifests_config_selection_low
+
+bugbug_reduced_manifests_config_selection_medium:
+    description: Runs the bugbug_reduced_manifests_config_selection_medium optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_r_c_s_med)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_reduced_manifests_config_selection_medium
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_reduced_manifests_config_selection_medium
+
+bugbug_disperse_medium_no_unseen:
+    description: Runs the bugbug_disperse_medium_no_unseen optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_disp_med_noun)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_disperse_medium_no_unseen
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_disperse_medium_no_unseen
+
+bugbug_disperse_medium_only_one:
+    description: Runs the bugbug_disperse_medium_only_one optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_disp_med_one)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_disperse_medium_only_one
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_disperse_medium_only_one
+
+bugbug_disperse_high:
+    description: Runs the bugbug_disperse_high optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_disperse_high)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_disperse_high
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_disperse_high
+
+bugbug_reduced:
+    description: Runs the bugbug_reduced optimization strategy instead of the default.
+    treeherder:
+        symbol: SS(bugbug_reduced)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_reduced
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_reduced
+
+bugbug_reduced_high:
+    description: Runs the bugbug_reduced optimization strategy (with a low confidence threshold) instead of the default.
+    treeherder:
+        symbol: SS(bugbug_reduced_high)
+    index:
+        product: source
+        job-name: shadow-scheduler-bugbug_reduced_high
+    worker:
+        env:
+            TASKGRAPH_OPTIMIZE_STRATEGIES: gecko_taskgraph.optimize:experimental.bugbug_reduced_high
diff --git a/taskcluster/ci/source-test/taskgraph.yml b/taskcluster/ci/source-test/taskgraph.yml
new file mode 100644
index 0000000000..132d5e488c
--- /dev/null
+++ b/taskcluster/ci/source-test/taskgraph.yml
@@ -0,0 +1,37 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+diff:
+    description: Generates diffs of CI changes
+    platform: linux1804-64/opt
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+        # Uncomment to upload logs of the generations as artifacts.
+        # env:
+        #     XDG_CACHE_HOME: "/builds/worker/artifacts/cache"
+        artifacts:
+            - type: directory
+              name: public/taskgraph
+              path: /builds/worker/artifacts
+    attributes:
+        code-review: true
+    always-target: true
+    treeherder:
+        kind: test
+        platform: gecko-decision/opt
+        symbol: tgdiff
+        tier: 2
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >-
+            mkdir -p /builds/worker/artifacts/diffs &&
+            ./mach taskgraph target --fast -p "taskcluster/test/params" -o "/builds/worker/artifacts/diffs/diff.txt" --diff {base_rev} &&
+            python taskcluster/scripts/misc/summarize-tgdiff.py /builds/worker/artifacts/diffs/ 20
+    when:
+        files-changed:
+            - 'taskcluster/ci/**'
+            - 'taskcluster/**/*.py'
diff --git a/taskcluster/ci/source-test/vendor.yml b/taskcluster/ci/source-test/vendor.yml
new file mode 100644
index 0000000000..c6594c6f68
--- /dev/null
+++ b/taskcluster/ci/source-test/vendor.yml
@@ -0,0 +1,44 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    worker-type: t-linux-xlarge-source
+    attributes:
+        code-review: true
+    worker:
+        docker-image: {in-tree: static-analysis-build}
+        max-run-time: 1200
+        artifacts:
+            - type: file
+              name: public/code-review/issues.json
+              path: /builds/worker/issues.json
+    treeherder:
+        kind: test
+        tier: 1
+    platform: lint/opt
+    run:
+        using: run-task
+
+rust:
+    description: Rust vendoring validation
+    treeherder:
+        symbol: rust(vendor)
+    worker:
+        env:
+            MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE: system
+    run:
+        cwd: '{checkout}'
+        command: >-
+            ./mach vendor rust --issues-json /builds/worker/issues.json
+    fetches:
+        toolchain:
+            - linux64-cargo-vet
+            - linux64-rust
+    when:
+        files-changed:
+            - 'Cargo.lock'
+            - '**/Cargo.toml'
+            - 'python/mozbuild/mozbuild/vendor/vendor_rust.py'
+            - 'supply-chain/**'
+            - 'third_party/rust/**'
diff --git a/taskcluster/ci/source-test/webcompat.yml b/taskcluster/ci/source-test/webcompat.yml
new file mode 100644
index 0000000000..66ff7910a6
--- /dev/null
+++ b/taskcluster/ci/source-test/webcompat.yml
@@ -0,0 +1,37 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: linux1804-64/opt
+    require-build:
+        by-project:
+            try:
+                linux1804-64/opt: build-linux64/opt
+            default:
+                linux1804-64/opt: build-linux64-shippable/opt
+    fetches:
+        build:
+            - target.tar.bz2
+        toolchain:
+            - linux64-geckodriver
+    run-on-projects: []
+    treeherder:
+        kind: test
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: ubuntu1804-test}
+        max-run-time: 1800
+    optimization:
+        skip-unless-expanded: null
+
+interventions:
+    description: webcompat intervention tests
+    treeherder:
+        symbol: wc(I)
+        tier: 3
+    python-version: [3]
+    run:
+        using: mach
+        # Need to start Xvfb if we remove --headless
+        mach: test-interventions --headless --binary $MOZ_FETCHES_DIR/firefox/firefox --webdriver-binary $MOZ_FETCHES_DIR/geckodriver --log-tbpl -
diff --git a/taskcluster/ci/source-test/webidl.yml b/taskcluster/ci/source-test/webidl.yml
new file mode 100644
index 0000000000..eec7a75e38
--- /dev/null
+++ b/taskcluster/ci/source-test/webidl.yml
@@ -0,0 +1,24 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+test:
+    description: WebIDL parser tests
+    platform: lint/opt
+    treeherder:
+        symbol: Wp
+        kind: test
+        tier: 1
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+    run:
+        using: mach
+        mach: webidl-parser-test --verbose
+    when:
+        files-changed:
+            - 'dom/bindings/parser/runtests.py'
+            - 'dom/bindings/parser/WebIDL.py'
+            - 'dom/bindings/parser/tests/**'
+            - 'other-licenses/ply/**'
diff --git a/taskcluster/ci/source-test/wpt-manifest.yml b/taskcluster/ci/source-test/wpt-manifest.yml
new file mode 100644
index 0000000000..06b29b60f5
--- /dev/null
+++ b/taskcluster/ci/source-test/wpt-manifest.yml
@@ -0,0 +1,39 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: linux64/opt
+    treeherder:
+        kind: test
+        tier: 2
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+
+upload:
+    description: Generate and store the web-platform-tests manifest
+    treeherder:
+        symbol: Wm
+    index:
+        product: source
+        job-name: manifest-upload
+        rank: build_date
+    run:
+        using: run-task
+        cwd: '{checkout}'
+        command: >
+            ./mach wpt-manifest-update --config testing/web-platform/wptrunner.ini --no-download
+            && tar -cvzf manifests.tar.gz -C testing/web-platform/ meta/MANIFEST.json mozilla/meta/MANIFEST.json
+    worker:
+        artifacts:
+            - type: file
+              path: /builds/worker/checkouts/gecko/manifests.tar.gz
+              name: public/manifests.tar.gz
+
+        max-run-time: 3600
+    when:
+        files-changed:
+            - 'testing/web-platform/tests/**'
+            - 'testing/web-platform/mozilla/tests/**'
diff --git a/taskcluster/ci/source-test/wpt-metadata.yml b/taskcluster/ci/source-test/wpt-metadata.yml
new file mode 100644
index 0000000000..b2c54d62b9
--- /dev/null
+++ b/taskcluster/ci/source-test/wpt-metadata.yml
@@ -0,0 +1,58 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+---
+job-defaults:
+    platform: lint/opt
+    treeherder:
+        kind: test
+        tier: 2
+    worker-type: t-linux-xlarge-source
+    worker:
+        docker-image: {in-tree: "lint"}
+        max-run-time: 1800
+
+summary:
+    description: Summarize wpt metadata
+    treeherder:
+        symbol: wpt-meta
+    index:
+        product: source
+        job-name: source-wpt-metadata-summary
+    run:
+        using: mach
+        mach: wpt-metadata-summary --out-dir=/builds/worker/artifacts
+    worker:
+        artifacts:
+            - type: directory
+              path: /builds/worker/artifacts
+              name: public
+        max-run-time: 2700
+    when:
+        files-changed:
+            - 'testing/web-platform/meta/**'
+            - 'testing/web-platform/mozilla/meta/**'
+            - 'testing/web-platform/metasummary.py'
+
+
+fission-regression:
+    description: Summarize fission regressions in wpt
+    treeherder:
+        symbol: wpt-fis
+    index:
+        product: source
+        job-name: source-wpt-fission-regressions
+    run:
+        using: mach
+        mach: wpt-fission-regressions --all-json /builds/worker/artifacts/regressions.json --untriaged /builds/worker/artifacts/untriaged.txt
+    worker:
+        artifacts:
+            - type: directory
+              path: /builds/worker/artifacts
+              name: public
+        max-run-time: 2700
+    when:
+        files-changed:
+            - 'testing/web-platform/meta/**'
+            - 'testing/web-platform/mozilla/meta/**'
+            - 'testing/web-platform/fissionregressions.py'