diff --git a/.github/workflows/ci-pr.yml b/.github/workflows/ci-pr.yml
index fec6a66f10..2cfa51db22 100644
--- a/.github/workflows/ci-pr.yml
+++ b/.github/workflows/ci-pr.yml
@@ -4,7 +4,7 @@ on: [pull_request]
 
 jobs:
 
-  buildtest-linux:
+  buildtest-linux-x86:
     container:
       image: racket/racket-ci:latest
       options: --init
diff --git a/.github/workflows/ci-push-arm_linux.yml b/.github/workflows/ci-push-arm_linux.yml
new file mode 100644
index 0000000000..8a881cbe03
--- /dev/null
+++ b/.github/workflows/ci-push-arm_linux.yml
@@ -0,0 +1,419 @@
+name: CI Linux ARM
+
+on: [push, pull_request]
+
+jobs:
+
+# Build jobs
+# These jobs build each Racket component separately and tests on the component start as soon as each
+# component finishes building.
+
+  build-racketcgc:
+    strategy:
+      fail-fast: false
+      matrix:
+        cify: [cify, nocify]
+        arch: [ARM64]
+    
+    runs-on: [self-hosted, Linux, '${{ matrix.arch }}']
+    container:
+      image: racket/racket-ci:latest
+    
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 100
+    - name: Setup jit if ARM
+      if: matrix.arch == 'ARM'
+      run: echo "::set-env name=JIT_OPTION::--enable-jit --enable-futures"
+    - name: Setup jit if ARM64
+      if: matrix.arch == 'ARM64'
+      run: echo "::set-env name=JIT_OPTION::--disable-jit --disable-futures"
+    - name: Setup cify if enabled
+      if: matrix.cify == 'cify'
+      run: echo "::set-env name=CIFY_OPTION::--enable-cify"
+    - name: Setup cify if disabled
+      if: matrix.cify == 'nocify'
+      run: echo "::set-env name=CIFY_OPTION::--disable-cify"
+    - name: Configuring Racket CGC
+      working-directory: ./racket/src
+      run: >
+        ./configure
+        --prefix=/usr/local/racketcgc
+        --enable-werror
+        --enable-cgcdefault
+        --enable-foreign
+        --enable-places
+        --enable-float
+        $JIT_OPTION
+        $CIFY_OPTION
+        --enable-pthread
+        --disable-docs
+    - name: Building
+      working-directory: ./racket/src
+      run: |
+        export cpus=$(nproc)
+        make -l $cpus -j $((cpus+1))
+    - name: Installing
+      working-directory: ./racket/src
+      run: make -j  $((cpus+1)) install
+    - name: Tarballing
+      working-directory: /usr/local
+      run: tar -cvjf /tmp/racketcgc-debian10-${{ matrix.cify }}-${{ matrix.arch }}_git${{ github.sha }}.tar.bz2 racketcgc
+    - uses: actions/upload-artifact@v2
+      with:
+        name: racketcgc-debian10-${{ matrix.cify }}-${{ matrix.arch }}_git${{ github.sha }}
+        path: /tmp/racketcgc-debian10-${{ matrix.cify }}-${{ matrix.arch }}_git${{ github.sha }}.tar.bz2
+
+  build-racket3m:
+    container:
+      image: racket/racket-ci:latest
+                
+    needs: build-racketcgc
+      
+    strategy:
+      fail-fast: false
+      matrix:
+        arch: [ARM64]
+        cify: [cify, nocify]
+        cc: [gcc, clang]
+        ep: [ep, noep]
+
+    runs-on: [self-hosted, Linux, '${{ matrix.arch }}']
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 100
+    - name: Setup cify if enabled
+      if: matrix.cify == 'cify'
+      run: echo "::set-env name=CIFY_OPTION::--enable-cify"
+    - name: Setup cify if disabled
+      if: matrix.cify == 'nocify'
+      run: echo "::set-env name=CIFY_OPTION::--disable-cify"
+    - name: Setup ep if enabled
+      if: matrix.ep == 'ep'
+      run: echo "::set-env name=EP_OPTIONS::--enable-extflonums --enable-places"
+    - name: Setup efp if disabled
+      if: matrix.efp == 'noep'
+      run: echo "::set-env name=EP_OPTIONS::--disable-extflonums --disable-places"
+    - uses: actions/download-artifact@v2
+      with:
+        name: racketcgc-debian10-nocify-${{ matrix.arch }}_git${{ github.sha }}
+        path: /tmp
+    - name: Untar
+      working-directory: /usr/local
+      run: tar -xvjf /tmp/racketcgc-debian10-nocify-${{ matrix.arch }}_git${{ github.sha }}.tar.bz2
+    - name: Configuring Racket 3m
+      working-directory: ./racket/src
+      env:
+        CC: ${{ matrix.cc }}
+      run: >
+        ./configure
+        --prefix=/usr/local/racket3m
+        --enable-bcdefault
+        --enable-bconly
+        --enable-werror
+        --enable-racket=/usr/local/racketcgc/bin/racket
+        --enable-foreign
+        --enable-float
+        --disable-docs
+        $CIFY_OPTION
+        $EP_OPTIONS
+        --enable-pthread
+    - name: Building
+      working-directory: ./racket/src
+      run: |
+        export cpus=$(nproc)
+        make -l $cpus -j $((cpus+1))
+    - name: Installing
+      working-directory: ./racket/src
+      run: make -j $((cpus+1)) install
+    # We build on Linux with clang and gcc and on MacOS with clang only.
+    # However, it makes little sense to test both builds on Linux so we tarball the
+    # gcc build only. Therefore this condition ensure we only perform the tarball
+    # and artifact upload on MacOS or (on Linux) if we are building with gcc.
+    - name: Tarballing
+      working-directory: /usr/local
+      run: tar -cvjf /tmp/racket3m-debian10-${{ matrix.cify }}-${{ matrix.ep }}-${{ matrix.arch }}_git${{ github.sha}}.tar.bz2 racket3m
+    - uses: actions/upload-artifact@v2
+      if: matrix.cc == 'gcc'
+      with:
+        name: racket3m-debian10-${{ matrix.cify }}-${{ matrix.ep }}-${{ matrix.arch }}_git${{ github.sha }}
+        path: /tmp/racket3m-debian10-${{ matrix.cify }}-${{ matrix.ep }}-${{ matrix.arch }}_git${{ github.sha }}.tar.bz2
+
+  build-racketcs:
+    container:
+      image: racket/racket-ci:latest
+
+    needs: build-racketcgc
+    
+    strategy:
+      fail-fast: false
+      matrix:
+        cc: [gcc, clang]
+
+    runs-on: [self-hosted, Linux, '${{ matrix.arch }}']
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 100
+    - uses: actions/download-artifact@v2
+      with:
+        name: racketcgc-debian10-nocify-${{ matrix.arch }}_git${{ github.sha }}
+        path: /tmp
+    - name: Untar
+      working-directory: /usr/local
+      run: tar -xvjf /tmp/racketcgc-debian10-nocify-${{ matrix.arch }}_git${{ github.sha}}.tar.bz2
+    - name: Checking out ChezScheme
+      working-directory: ./racket/src
+      run: git clone --depth=1 --recurse-submodules -j3 https://github.com/racket/ChezScheme
+    - name: Configuring Racket CS
+      working-directory: ./racket/src
+      env:
+        CC: ${{ matrix.cc }}
+      run: >
+        ./configure
+        --prefix=/usr/local/racketcs
+        $RACKET_EXTRA_CONFIGURE_ARGS
+        --enable-racket=/usr/local/racketcgc/bin/racket
+        --enable-compress
+        --disable-docs
+        --enable-pthread
+        --enable-csdefault
+        --enable-csonly
+    - name: Building
+      working-directory: ./racket/src
+      run: |
+        export cpus=$(nproc)
+        make -l $cpus -j $((cpus+1))
+    - name: Installing
+      working-directory: ./racket/src
+      run: make -j  $((cpus+1)) install
+    - name: Tarballing
+      working-directory: /usr/local
+      run: tar -cvjf /tmp/racketcs-debian10-${{ matrix.arch }}_git${{ github.sha}}.tar.bz2 racketcs
+    - uses: actions/upload-artifact@v2
+      with:
+        name: racketcs-debian10-${{ matrix.arch }}_git${{ github.sha }}
+        path: /tmp/racketcs-debian10-${{ matrix.arch }}_git${{ github.sha }}.tar.bz2
+
+  # Tests
+  # Unfortunately Actions does not support atm yaml anchors
+  # otherwise all the following jobs could be simplified
+  # Note: the reason we cannot transform this into a matrix
+  # build is because we cannot use variables in the needs keyword.
+  test-cgc:
+    container:
+      image: racket/racket-ci:latest
+      options: --init
+
+    needs: build-racketcgc
+
+    strategy:
+      fail-fast: false
+      matrix:
+        arch: [ARM64]
+        cify: [cify, nocify]
+
+    runs-on: [self-hosted, Linux, '${{ matrix.arch }}']
+
+    steps:
+      - run: find ${HOME}/.racket -type f
+      - uses: actions/checkout@v2
+      - uses: actions/download-artifact@v2
+        with:
+          name: racketcgc-debian10-${{ matrix.cify }}-${{ matrix.arch }}_git${{ github.sha }}
+          path: /tmp
+      - name: Untar
+        working-directory: /usr/local
+        run: tar -xvjf /tmp/racketcgc-debian10-${{ matrix.cify }}-${{ matrix.arch }}_git${{ github.sha }}.tar.bz2
+      - name: Extend PATH with Racket executable
+        run: echo "::set-env name=PATH::/usr/local/racketcgc/bin:$PATH"
+      - name: Check for Racket
+        run: racket --version
+      - name: Install catalog
+        run: |
+          racket -l- pkg/dirs-catalog --immediate $PWD/rktcat $PWD/pkgs/
+          raco pkg config --set catalogs $PWD/rktcat/ https://pkgs.racket-lang.org https://planet-compats.racket-lang.org
+      - name: Install racket-test dependency
+        run: raco pkg install --auto racket-test
+      - name: Run tests/racket/test
+        run: raco test -l tests/racket/test
+      - name: Run tests/racket/contract/all
+        run: racket -l tests/racket/contract/all
+      - name: Run tests/json/json
+        run: raco test -l tests/json/json
+      - name: Run tests/file/main
+        run: raco test -l tests/file/main
+      - name: Run tests/net/head
+        run: raco test -l tests/net/head
+      - name: Run tests/net/uri-codec
+        run: raco test -l tests/net/uri-codec
+      - name: Run tests/net/url
+        run: raco test -l tests/net/url
+      - name: Run tests/net/url-port
+        run: raco test -l tests/net/url-port
+      - name: Run tests/net/encoders
+        run: raco test -l tests/net/encoders
+      - name: Run tests/openssl/basic
+        run: raco test -l tests/openssl/basic
+      - name: Run tests/openssl/https
+        run: raco test -l tests/openssl/https
+      - name: Run tests/match/main
+        run: raco test -l tests/match/main
+      - name: Run tests/zo-path
+        run: raco test -l tests/zo-path
+      - name: Run tests/xml
+        run: raco test -c tests/xml
+      - name: Run tests/future
+        run: raco test -c tests/future
+      - name: Run tests/stxparse
+        run: raco test -c tests/stxparse
+      - name: Install db tests dependency
+        run: raco pkg install --auto db-test
+      - name: Run db tests
+        run: raco test -l tests/db/all-tests
+      - name: Run syntax tests
+        run: raco test -c tests/syntax
+
+  test-3m:
+    container:
+      image: racket/racket-ci:latest
+      options: --init
+
+    needs: build-racket3m
+
+    strategy:
+      fail-fast: false
+      matrix:
+        cify: [cify, nocify]
+        ep: [ep, noep]
+
+    runs-on: [self-hosted, Linux, '${{ matrix.arch }}']
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/download-artifact@v2
+        with:
+          name: racket3m-debian10-${{ matrix.cify }}-${{ matrix.ep }}-${{ matrix.arch }}_git${{ github.sha }}
+          path: /tmp
+      - name: Untar
+        working-directory: /usr/local
+        run: tar -xvjf /tmp/racket3m-debian10-${{ matrix.cify }}-${{ matrix.ep }}-${{ matrix.arch }}_git${{ github.sha }}.tar.bz2
+      - name: Extend PATH with Racket executable
+        run: echo "::set-env name=PATH::/usr/local/racket3m/bin:$PATH"
+      - name: Check for Racket
+        run: racket --version
+      - name: Install catalog and required packages
+        run: |
+          racket -l- pkg/dirs-catalog --immediate $PWD/rktcat $PWD/pkgs/
+          raco pkg config --set catalogs $PWD/rktcat/ https://pkgs.racket-lang.org https://planet-compats.racket-lang.org
+      - name: Install racket-test dependency
+        run: raco pkg install --auto racket-test
+      - name: Run tests/racket/test
+        run: raco test -l tests/racket/test
+      - name: Run tests/racket/contract/all
+        run: racket -l tests/racket/contract/all
+      - name: Run tests/json/json
+        run: raco test -l tests/json/json
+      - name: Run tests/file/main
+        run: raco test -l tests/file/main
+      - name: Run tests/net/head
+        run: raco test -l tests/net/head
+      - name: Run tests/net/uri-codec
+        run: raco test -l tests/net/uri-codec
+      - name: Run tests/net/url
+        run: raco test -l tests/net/url
+      - name: Run tests/net/url-port
+        run: raco test -l tests/net/url-port
+      - name: Run tests/net/encoders
+        run: raco test -l tests/net/encoders
+      - name: Run tests/openssl/basic
+        run: raco test -l tests/openssl/basic
+      - name: Run tests/openssl/https
+        run: raco test -l tests/openssl/https
+      - name: Run tests/match/main
+        run: raco test -l tests/match/main
+      - name: Run tests/zo-path
+        run: raco test -l tests/zo-path
+      - name: Run tests/xml
+        run: raco test -c tests/xml
+      - name: Run tests/future
+        run: raco test -c tests/future
+      - name: Run tests/stxparse
+        run: raco test -c tests/stxparse
+      - name: Install db tests dependency
+        run: raco pkg install --auto db-test
+      - name: Run db tests
+        run: raco test -l tests/db/all-tests
+
+  test-cs:
+    container:
+      image: racket/racket-ci:latest
+      options: --init
+
+    strategy:
+      matrix:
+        arch: [ARM64]
+      
+    needs: build-racketcs
+
+    runs-on: [self-hosted, Linux, '${{ matrix.arch }}']
+        
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/download-artifact@v2
+        with:
+          name: racketcs-debian10-${{ matrix.arch }}_git${{ github.sha }}
+          path: /tmp
+      - name: Untar
+        working-directory: /usr/local
+        run: tar -xvjf /tmp/racketcs-debian10-${{ matrix.arch }}_git${{ github.sha }}.tar.bz2
+      - name: Extend PATH with Racket executable
+        run: echo "::set-env name=PATH::/usr/local/racketcs/bin:$PATH"
+      - name: Check for Racket
+        run: racket --version
+      - name: Install catalog and required packages
+        run: |
+          racket -l- pkg/dirs-catalog --immediate $PWD/rktcat $PWD/pkgs/
+          raco pkg config --set catalogs $PWD/rktcat/ https://pkgs.racket-lang.org https://planet-compats.racket-lang.org
+      - name: Install racket-test dependency
+        run: raco pkg install --auto racket-test
+      - name: Run tests/racket/test
+        run: raco test -l tests/racket/test
+      - name: Run tests/racket/contract/all
+        run: racket -l tests/racket/contract/all
+      - name: Run tests/json/json
+        run: raco test -l tests/json/json
+      - name: Run tests/file/main
+        run: raco test -l tests/file/main
+      - name: Run tests/net/head
+        run: raco test -l tests/net/head
+      - name: Run tests/net/uri-codec
+        run: raco test -l tests/net/uri-codec
+      - name: Run tests/net/url
+        run: raco test -l tests/net/url
+      - name: Run tests/net/url-port
+        run: raco test -l tests/net/url-port
+      - name: Run tests/net/encoders
+        run: raco test -l tests/net/encoders
+      - name: Run tests/openssl/basic
+        run: raco test -l tests/openssl/basic
+      - name: Run tests/openssl/https
+        run: raco test -l tests/openssl/https
+      - name: Run tests/match/main
+        run: raco test -l tests/match/main
+      - name: Run tests/zo-path
+        run: raco test -l tests/zo-path
+      - name: Run tests/xml
+        run: raco test -c tests/xml
+      - name: Run tests/future
+        run: raco test -c tests/future
+      - name: Run tests/stxparse
+        run: raco test -c tests/stxparse
+      - name: Install db tests dependency
+        run: raco pkg install --auto db-test
+      - name: Run db tests
+        run: raco test -l tests/db/all-tests
diff --git a/.github/workflows/ci-push_linux.yml b/.github/workflows/ci-push-x86_linux.yml
similarity index 99%
rename from .github/workflows/ci-push_linux.yml
rename to .github/workflows/ci-push-x86_linux.yml
index 443d4e9c23..ffb6a73e76 100644
--- a/.github/workflows/ci-push_linux.yml
+++ b/.github/workflows/ci-push-x86_linux.yml
@@ -1,4 +1,4 @@
-name: CI Linux
+name: CI Linux x86
 
 on: [push]
 
diff --git a/.github/workflows/ubsan-arm.yml b/.github/workflows/ubsan-arm.yml
new file mode 100644
index 0000000000..4e28863a42
--- /dev/null
+++ b/.github/workflows/ubsan-arm.yml
@@ -0,0 +1,183 @@
+name: Test with UBSan on ARM
+
+on: [push, pull_request]
+
+jobs:
+
+# Build jobs
+# These jobs build Racket using undefined behaviour sanitizers and gathers the results into a final log
+  racket3m-ubsan:
+    strategy:
+      fail-fast: false
+      matrix:
+        arch: [ARM64]
+
+    runs-on: [self-hosted, Linux, '${{ matrix.arch }}']
+    container: racket/racket-ci:latest
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 100
+    - name: Create logs directory
+      run: mkdir $PWD/logs
+    - name: Build
+      run: |
+        export cpus=$(grep -c ^processor /proc/cpuinfo)
+        make CPUS="${cpus}" PKGS="racket-test db-test unstable-flonum-lib net-test" CONFIGURE_ARGS_qq='CFLAGS="-fno-var-tracking-assignments" --enable-ubsan' RACKETBC_SUFFIX="" bc-in-place 2>&1 | tee logs/build.log
+    - name: Add new racket to PATH
+      run: |
+        echo "${GITHUB_WORKSPACE}/racket/bin" >> $GITHUB_PATH
+        find /__w/racket/racket/racket/bin -type f
+    - name: Racket version
+      run: |
+        which racket
+        racket --version
+    - name: Run tests/racket/test
+      continue-on-error: true
+      run: raco test -l tests/racket/test 2>&1 | tee logs/racket-test.log
+    - name: Run tests/racket/contract/all
+      continue-on-error: true
+      run: racket -l tests/racket/contract/all | tee logs/contract-all.log
+    - name: Run tests/json/json
+      continue-on-error: true
+      run: raco test -l tests/json/json | tee logs/json-json.log
+    - name: Run tests/file/main
+      continue-on-error: true
+      run: raco test -l tests/file/main | tee logs/file-main.log
+    - name: Run tests/net/head
+      continue-on-error: true
+      run: raco test -l tests/net/head | tee logs/net-head.log
+    - name: Run tests/net/uri-codec
+      continue-on-error: true
+      run: raco test -l tests/net/uri-codec | tee logs/uri-codec.log
+    - name: Run tests/net/url
+      continue-on-error: true
+      run: raco test -l tests/net/url | tee logs/net-url.log
+    - name: Run tests/net/url-port
+      continue-on-error: true
+      run: raco test -l tests/net/url-port | tee logs/url-port.log
+    - name: Run tests/net/encoders
+      continue-on-error: true
+      run: raco test -l tests/net/encoders | tee logs/net-encoders.log
+    - name: Run tests/openssl/basic
+      continue-on-error: true
+      run: raco test -l tests/openssl/basic | tee logs/openssl-basic.log
+    - name: Run tests/openssl/https
+      continue-on-error: true
+      run: raco test -l tests/openssl/https | tee logs/openssl-https.log
+    - name: Run tests/match/main
+      continue-on-error: true
+      run: raco test -l tests/match/main | tee logs/match-main.log
+    - name: Run tests/zo-path
+      continue-on-error: true
+      run: raco test -l tests/zo-path | tee logs/zo-path.log
+    - name: Run tests/xml
+      continue-on-error: true
+      run: raco test -c tests/xml | tee logs/xml.log
+    - name: Run tests/future
+      continue-on-error: true
+      run: raco test -c tests/future | tee logs/future.log
+    - name: Run tests/stxparse
+      continue-on-error: true
+      run: raco test -c tests/stxparse | tee logs/stxparse.log
+    - name: Run db tests
+      continue-on-error: true
+      run: raco test -l tests/db/all-tests | tee logs/db-all-tests.log
+    - name: Gather runtime errors
+      run: |
+        grep 'runtime error' logs/*.log > runtime-errors-${{ matrix.arch }}_git${{ github.sha }}.log || true
+        test ! -s runtime-errors-${{ matrix.arch }}_git${{ github.sha }}.log
+    - uses: actions/upload-artifact@v2
+      with:
+        name: runtime-errors-${{ matrix.arch }}_git${{ github.sha }}
+        path: runtime-errors-${{ matrix.arch }}_git${{ github.sha }}.log
+
+  racketcs-ubsan:
+    strategy:
+      fail-fast: false
+      matrix:
+        arch: [ARM64]
+
+    runs-on: [self-hosted, Linux, '${{ matrix.arch }}']
+    container: racket/racket-ci:latest
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 100
+    - name: Create logs directory
+      run: mkdir $PWD/logs
+    - name: Build
+      run: |
+        export cpus=$(grep -c ^processor /proc/cpuinfo)
+        make CPUS="${cpus}" PKGS="racket-test db-test unstable-flonum-lib net-test" CONFIGURE_ARGS_qq='CFLAGS="-fno-var-tracking-assignments" --enable-ubsan' cs-in-place 2>&1 | tee logs/build.log
+    - name: Add new racket to PATH
+      run: |
+        echo "${GITHUB_WORKSPACE}/racket/bin" >> $GITHUB_PATH
+        find /__w/racket/racket/racket/bin -type f
+    - name: Racket version
+      run: |
+        which racket
+        racket --version
+    - name: Run tests/racket/test
+      continue-on-error: true
+      run: raco test -l tests/racket/test 2>&1 | tee logs/racket-test.log
+    - name: Run tests/racket/contract/all
+      continue-on-error: true
+      run: racket -l tests/racket/contract/all | tee logs/contract-all.log
+    - name: Run tests/json/json
+      continue-on-error: true
+      run: raco test -l tests/json/json | tee logs/json-json.log
+    - name: Run tests/file/main
+      continue-on-error: true
+      run: raco test -l tests/file/main | tee logs/file-main.log
+    - name: Run tests/net/head
+      continue-on-error: true
+      run: raco test -l tests/net/head | tee logs/net-head.log
+    - name: Run tests/net/uri-codec
+      continue-on-error: true
+      run: raco test -l tests/net/uri-codec | tee logs/uri-codec.log
+    - name: Run tests/net/url
+      continue-on-error: true
+      run: raco test -l tests/net/url | tee logs/net-url.log
+    - name: Run tests/net/url-port
+      continue-on-error: true
+      run: raco test -l tests/net/url-port | tee logs/url-port.log
+    - name: Run tests/net/encoders
+      continue-on-error: true
+      run: raco test -l tests/net/encoders | tee logs/net-encoders.log
+    - name: Run tests/openssl/basic
+      continue-on-error: true
+      run: raco test -l tests/openssl/basic | tee logs/openssl-basic.log
+    - name: Run tests/openssl/https
+      continue-on-error: true
+      run: raco test -l tests/openssl/https | tee logs/openssl-https.log
+    - name: Run tests/match/main
+      continue-on-error: true
+      run: raco test -l tests/match/main | tee logs/match-main.log
+    - name: Run tests/zo-path
+      continue-on-error: true
+      run: raco test -l tests/zo-path | tee logs/zo-path.log
+    - name: Run tests/xml
+      continue-on-error: true
+      run: raco test -c tests/xml | tee logs/xml.log
+    - name: Run tests/future
+      continue-on-error: true
+      run: raco test -c tests/future | tee logs/future.log
+    - name: Run tests/stxparse
+      continue-on-error: true
+      run: raco test -c tests/stxparse | tee logs/stxparse.log
+    - name: Run db tests
+      continue-on-error: true
+      run: raco test -l tests/db/all-tests | tee logs/db-all-tests.log
+    - name: Gather runtime errors
+      run: |
+        grep 'runtime error' logs/*.log > runtime-errors-${{ matrix.arch }}_git${{ github.sha }}.log || true
+        test ! -s runtime-errors-${{ matrix.arch }}_git${{ github.sha }}.log
+    - uses: actions/upload-artifact@v2
+      if: failure()
+      with:
+        name: runtime-errors-${{ matrix.arch }}-cs_git${{ github.sha }}
+        path: runtime-errors-${{ matrix.arch }}_git${{ github.sha }}.log
+
diff --git a/.github/workflows/ci-ubsan.yml b/.github/workflows/ubsan-x86.yml
similarity index 99%
rename from .github/workflows/ci-ubsan.yml
rename to .github/workflows/ubsan-x86.yml
index 7944e831a8..977c962e93 100644
--- a/.github/workflows/ci-ubsan.yml
+++ b/.github/workflows/ubsan-x86.yml
@@ -1,4 +1,4 @@
-name: Test with UBSan
+name: Test with UBSan on X86
 
 on: [push, pull_request]