diff --git a/.github/workflows/wpt-nightly.yml b/.github/workflows/wpt-nightly.yml
new file mode 100644
index 00000000000..bb2b2ed7178
--- /dev/null
+++ b/.github/workflows/wpt-nightly.yml
@@ -0,0 +1,149 @@
+name: Synchronize WPT Nightly
+
+on:
+  pull_request:
+  schedule:
+    # Run this job at 00:00 everyday
+    - cron: "0 0 * * *"
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  build-linux:
+    name: Build on Linux
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 2
+      - name: Bootstrap
+        run: |
+          python3 -m pip install --upgrade pip virtualenv
+          sudo apt update
+          python3 ./mach bootstrap
+      - name: Release build
+        run: python3 ./mach build --release
+      - name: Lockfile check
+        run: ./etc/ci/lockfile_changed.sh
+      - name: Forbidden panic check
+        run: ./etc/ci/check_no_panic.sh
+      - name: Package binary
+        run: tar -czf target.tar.gz target/release/servo resources
+      - name: Archive binary
+        uses: actions/upload-artifact@v2
+        with:
+          name: release-binary
+          path: target.tar.gz
+
+  linux-wpt:
+    name: Linux WPT Tests
+    runs-on: ubuntu-20.04
+    needs: ["build-linux"]
+    env:
+      max_chunk_id: 20
+    strategy:
+      matrix:
+        chunk_id: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 2
+      - uses: actions/download-artifact@v2
+        with:
+          name: release-binary
+          path: release-binary
+      - name: unPackage binary
+        run: tar -xzf release-binary/target.tar.gz
+      - name: Prep test environment
+        run: |
+          python3 -m pip install --upgrade pip virtualenv
+          sudo apt update
+          sudo apt install -qy --no-install-recommends libgl1 libssl1.1 libdbus-1-3 libxcb-xfixes0-dev libxcb-shape0-dev libunwind8 libegl1-mesa
+          wget http://mirrors.kernel.org/ubuntu/pool/main/libf/libffi/libffi6_3.2.1-8_amd64.deb
+          sudo apt install ./libffi6_3.2.1-8_amd64.deb
+          python3 ./mach bootstrap-gstreamer
+      - name: Fetch upstream changes before testing
+        run: |
+          ./etc/ci/update-wpt-checkout fetch-upstream-changes
+      - name: Run tests
+        run: |
+          python3 ./mach test-wpt \
+            --release --processes $(nproc) --timeout-multiplier 2 \
+            --total-chunks ${{ env.max_chunk_id }} --this-chunk ${{ matrix.chunk_id }} \
+            --log-raw test-wpt.${{ matrix.chunk_id }}.log \
+            --log-servojson wpt-jsonsummary.${{ matrix.chunk_id }}.log \
+            --always-succeed
+          python3 ./mach filter-intermittents wpt-jsonsummary.${{ matrix.chunk_id }}.log \
+            --log-intermittents=intermittents.${{ matrix.chunk_id }}.log \
+            --log-filteredsummary=filtered-wpt-summary.${{ matrix.chunk_id }}.log \
+            --tracker-api=default --reporter-api=default \
+            --always-succeed
+      - name: Archive logs
+        uses: actions/upload-artifact@v2
+        with:
+          name: wpt${{ matrix.chunk_id }}-logs-linux
+          path: |
+            test-wpt.${{ matrix.chunk_id }}.log
+            wpt-jsonsummary.${{ matrix.chunk_id }}.log
+            filtered-wpt-summary.${{ matrix.chunk_id }}.log
+            intermittents.${{ matrix.chunk_id }}.log
+
+  sync:
+    name: Synchronize WPT Nightly
+    runs-on: ubuntu-latest
+    needs:
+      - "build-linux"
+      - "linux-wpt"
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 2
+      # Download all artifacts
+      - uses: actions/download-artifact@v2
+      - name: Prep environment
+        run: |
+          python3 -m pip install --upgrade pip virtualenv
+          sudo apt update
+          python3 ./mach bootstrap
+      - name: Add upstream remote
+        run: |
+          git config --local user.email "josh+wptsync@joshmatthews.net"
+          git config --local user.name "WPT Sync Bot"
+          git remote add upstream https://github.com/servo/servo.git
+          git fetch --unshallow upstream
+      - name: Fetch upstream changes before syncing
+        run: |
+          ./etc/ci/update-wpt-checkout fetch-upstream-changes
+      - name: Run WPT Update
+        env:
+          MAX_CHUNK_ID: 20
+          WPT_SYNC_TOKEN: ${{ secrets.WPT_SYNC_TOKEN }}
+        run: |
+          export CURRENT_DATE=$(date +"%d-%m-%Y")
+          echo $CURRENT_DATE
+          echo "CURRENT_DATE=$CURRENT_DATE" >> $GITHUB_ENV
+          ./etc/ci/wpt-nightly-update.sh
+      - name: Push changes
+        uses: ad-m/github-push-action@master
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          branch: wpt_update_${{ env.CURRENT_DATE }}
+          repository: servo-wpt-sync/servo
+      - name: Open PR
+        env:
+          GH_TOKEN: ${{ secrets.WPT_SYNC_TOKEN }}
+          UPDATE_BRANCH: wpt_update_${{ env.CURRENT_DATE }}
+        run: |
+          BODY=$(cat <<EOF
+          Automated downstream sync of changes from upstream as of ${{ env.CURRENT_DATE }}
+          [no-wpt-sync]
+          r? @servo-wpt-sync
+          EOF
+          )
+          git remote add sync-fork https://github.com/servo-wpt-sync/servo.git
+          git fetch sync-fork ${{ env.UPDATE_BRANCH }}
+          git checkout ${{ env.UPDATE_BRANCH }}
+          # TODO: comment `@bors-servo r+` from `@servo-wpt-sync`
+          gh pr create --title "Sync WPT with upstream (${{ env.CURRENT_DATE }})" --body "$BODY"
diff --git a/etc/ci/update-wpt-checkout b/etc/ci/update-wpt-checkout
index 07ef5d60d6b..58f5cc386a9 100755
--- a/etc/ci/update-wpt-checkout
+++ b/etc/ci/update-wpt-checkout
@@ -190,8 +190,12 @@ function main() {
         if [[ "${code}" == "255" ]]; then
             echo "No changes to sync."
             return 0
-        elif [[ "${code}" != "" ]]; then
+        fi
+
+        if [[ "${code}" != "" ]]; then
             return "${code}"
+        else
+            return 0
         fi
     fi
 
diff --git a/etc/ci/wpt-nightly-update.sh b/etc/ci/wpt-nightly-update.sh
new file mode 100755
index 00000000000..3fb316e0640
--- /dev/null
+++ b/etc/ci/wpt-nightly-update.sh
@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+
+# 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 https://mozilla.org/MPL/2.0/.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+# Using an existing log file, update the expected test results and amend the
+# last commit with the new results.
+function unsafe_update_metadata() {
+    ./mach update-wpt "${1}" || return 1
+    # Hope that any test result changes from layout-2013 are
+    # also applicable to layout-2020.
+    ./mach update-wpt --layout-2020 "${1}" || return 2
+    # Ensure any new directories or ini files are included in these changes.
+    git add tests/wpt/metadata tests/wpt/metadata-layout-2020 \
+        tests/wpt/mozilla/meta || return 3
+    # Merge all changes with the existing commit.
+    git commit -a --amend --no-edit || return 3
+}
+
+function update_metadata() {
+    unsafe_update_metadata "${1}" || \
+        { code="${?}"; cleanup; return "${code}"; }
+}
+
+function main() {
+    for n in $(seq 1 "${MAX_CHUNK_ID}")
+    do
+        code=""
+        update_metadata "wpt${n}-logs-linux/test-wpt.${n}.log" || \
+            code="${?}"
+        if [[ "${code}" != "" ]]; then
+            return "${code}"
+        fi
+    done
+}
+
+# Ensure we clean up after ourselves if this script is interrupted.
+trap 'cleanup' SIGINT SIGTERM
+main
diff --git a/python/mach_bootstrap.py b/python/mach_bootstrap.py
index 97d05e961cc..26d4ecbb945 100644
--- a/python/mach_bootstrap.py
+++ b/python/mach_bootstrap.py
@@ -192,7 +192,6 @@ def _activate_virtualenv(topdir, is_firefox):
         os.path.join("python", "requirements.txt"),
         wptrunner_path(is_firefox, topdir, "requirements.txt",),
         wptrunner_path(is_firefox, topdir, "requirements_firefox.txt"),
-        wptrunner_path(is_firefox, topdir, "requirements_servo.txt"),
     ]
 
     if need_pip_upgrade:
diff --git a/python/servo/testing_commands.py b/python/servo/testing_commands.py
index a9065d06352..dc73b0af91e 100644
--- a/python/servo/testing_commands.py
+++ b/python/servo/testing_commands.py
@@ -535,7 +535,16 @@ class MachCommands(CommandBase):
                      help='The API endpoint for tracking known intermittent failures.')
     @CommandArgument('--reporter-api', default=None, action='store',
                      help='The API endpoint for reporting tracked intermittent failures.')
-    def filter_intermittents(self, summary, log_filteredsummary, log_intermittents, auth, tracker_api, reporter_api):
+    @CommandArgument('--always-succeed', default=False, action='store_true',
+                     help='Always yield exit code of zero')
+    def filter_intermittents(self,
+                             summary,
+                             log_filteredsummary,
+                             log_intermittents,
+                             auth,
+                             tracker_api,
+                             reporter_api,
+                             always_succeed):
         encoded_auth = None
         if auth:
             with open(auth, "r") as file:
@@ -602,7 +611,10 @@ class MachCommands(CommandBase):
         if actual_failures:
             format(actual_failures, description)
 
-        return bool(actual_failures)
+        if always_succeed:
+            return 0
+        else:
+            return bool(actual_failures)
 
     @Command('test-android-startup',
              description='Extremely minimal testing of Servo for Android',