diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 1f6c25f..be55b72 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -16,6 +16,27 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        include:
+          # Cross-compilation became possible in go1.5 with the removal of C
+          # code from the compiler. See https://go.dev/doc/go1.5#c.
+          #
+          # Cross-compilation isn't supported in gccgo.
+          - arch: x64
+            go: '1.3'
+          - arch: x64
+            go: '1.4'
+          - arch: x64
+            go: gccgo-9
+          - arch: x64
+            go: gccgo-10
+          - arch: x64
+            go: gccgo-11
+          - arch: x64
+            go: gccgo-12
+          # NB: gccgo-13 and gccgo-14 are not available in the Ubuntu 22.04.
+          #
+          # TODO(https://github.com/actions/runner-images/issues/9848): Add gccgo-13 and gccgo-14
+          # when Ubuntu 24.04 is GA on GitHub Actions.
         arch:
           - armv6
           - armv7
@@ -48,163 +69,7 @@ jobs:
             go: '1.5'
           - arch: s390x
             go: '1.6'
-        # Race detector binaries crash with:
-        #
-        # FATAL: ThreadSanitizer: unsupported VMA range
-        #
-        # See https://github.com/golang/go/issues/29948.
-        arm64_unsupported_vma_range:
-          - true
-        # Race detector binaries crash with:
-        #
-        # ==17==ERROR: ThreadSanitizer failed to allocate 0x7f0000 (8323072) bytes at address 9000001a0000 (errno: 12)
-        #
-        # See https://github.com/golang/go/issues/67881.
-        s390x_thread_sanitizer_failed_to_allocate:
-          - true
-        include:
-          # Race builds are pretty much busted on Go 1.4 and below on systems
-          # with newer C compilers. A number of fixes were backported to
-          # go1.4-bootstrap but not any released version. See
-          # https://github.com/golang/go/compare/go1.4.3...release-branch.go1.4.
-          #
-          # Race builds aren't supported on linux/386.
-          #
-          # Cross-compilation became possible in go1.5 with the removal of C
-          # code from the compiler. See https://go.dev/doc/go1.5#c.
-          #
-          # Race builds aren't supported in gccgo.
-          #
-          # Cross-compilation isn't supported in gccgo.
-          - arch: x64
-            go: '1.3'
-            x64_race_broken: true
-          - arch: x64
-            go: '1.4'
-            x64_race_broken: true
-          - arch: x64
-            go: gccgo-9
-            x64_race_broken: true
-          - arch: x64
-            go: gccgo-10
-            x64_race_broken: true
-          - arch: x64
-            go: gccgo-11
-            x64_race_broken: true
-          - arch: x64
-            go: gccgo-12
-            x64_race_broken: true
-          # NB: gccgo-13 and gccgo-14 are not available in the Ubuntu 22.04.
-          #
-          # TODO(https://github.com/actions/runner-images/issues/9848): Add gccgo-13 and gccgo-14
-          # when Ubuntu 24.04 is GA on GitHub Actions.
 
-          # Go binaries built with Go 1.8 and below are incompatible with QEMU
-          # user-level emulation. See
-          # https://github.com/golang/go/commit/2673f9e.
-          - arch: armv6
-            go: '1.5'
-            qemu_emulation_broken: true
-          - arch: armv6
-            go: '1.6'
-            qemu_emulation_broken: true
-          - arch: armv6
-            go: '1.7'
-            qemu_emulation_broken: true
-          - arch: armv6
-            go: '1.8'
-            qemu_emulation_broken: true
-          - arch: armv7
-            go: '1.5'
-            qemu_emulation_broken: true
-          - arch: armv7
-            go: '1.6'
-            qemu_emulation_broken: true
-          - arch: armv7
-            go: '1.7'
-            qemu_emulation_broken: true
-          - arch: armv7
-            go: '1.8'
-            qemu_emulation_broken: true
-          - arch: aarch64
-            go: '1.5'
-            qemu_emulation_broken: true
-          - arch: aarch64
-            go: '1.6'
-            qemu_emulation_broken: true
-          - arch: aarch64
-            go: '1.7'
-            qemu_emulation_broken: true
-          - arch: aarch64
-            go: '1.8'
-            qemu_emulation_broken: true
-          - arch: s390x
-            go: '1.7'
-            qemu_emulation_broken: true
-          - arch: s390x
-            go: '1.8'
-            qemu_emulation_broken: true
-          # Race detector support on linux/arm64 was added in go1.12. See
-          # https://go.dev/doc/go1.12.
-          - arch: aarch64
-            go: '1.5'
-            arm64_race_unsupported: true
-          - arch: aarch64
-            go: '1.6'
-            arm64_race_unsupported: true
-          - arch: aarch64
-            go: '1.7'
-            arm64_race_unsupported: true
-          - arch: aarch64
-            go: '1.8'
-            arm64_race_unsupported: true
-          - arch: aarch64
-            go: '1.9'
-            arm64_race_unsupported: true
-          - arch: aarch64
-            go: '1.10'
-            arm64_race_unsupported: true
-          - arch: aarch64
-            go: '1.11'
-            arm64_race_unsupported: true
-          # Race detector support on linux/s390x was added in go1.19. See
-          # https://go.dev/doc/go1.19.
-          - arch: s390x
-            go: '1.7'
-            s390x_race_unsupported: true
-          - arch: s390x
-            go: '1.8'
-            s390x_race_unsupported: true
-          - arch: s390x
-            go: '1.9'
-            s390x_race_unsupported: true
-          - arch: s390x
-            go: '1.10'
-            s390x_race_unsupported: true
-          - arch: s390x
-            go: '1.11'
-            s390x_race_unsupported: true
-          - arch: s390x
-            go: '1.12'
-            s390x_race_unsupported: true
-          - arch: s390x
-            go: '1.13'
-            s390x_race_unsupported: true
-          - arch: s390x
-            go: '1.14'
-            s390x_race_unsupported: true
-          - arch: s390x
-            go: '1.15'
-            s390x_race_unsupported: true
-          - arch: s390x
-            go: '1.16'
-            s390x_race_unsupported: true
-          - arch: s390x
-            go: '1.17'
-            s390x_race_unsupported: true
-          - arch: s390x
-            go: '1.18'
-            s390x_race_unsupported: true
     steps:
       - uses: actions/checkout@v4
       - name: Set up Go
@@ -223,7 +88,8 @@ jobs:
           echo ${{ matrix.go }} | sed 's/^gcc//' | xargs -I % ln -s /usr/bin/% /usr/local/bin/go
 
           go version
-      - name: 'Set environment'
+      - name: Configure environment
+        id: configure_environment
         shell: bash
         run: |
           set -euxo pipefail
@@ -254,30 +120,90 @@ jobs:
               exit 1
               ;;
           esac
-      - run: go build -v ./...
-      - name: 'Check that Get is inlined'
-        if: ${{ !startsWith(matrix.go, 'gccgo-') }}
+
+          version_ge() {
+            version=$1
+
+            printf "$version\n%s\n" ${{ matrix.go }} | sort -V | head -n1 | xargs test "$version" =
+          }
+
+          # Race builds are pretty much busted on Go 1.4 and below on systems with newer C
+          # compilers. A number of fixes were backported to go1.4-bootstrap but not any released
+          # version. See https://github.com/golang/go/compare/go1.4.3...release-branch.go1.4.
+          if ! version_ge 1.5; then
+            echo "RACE_BUILDS_BROKEN=1" >> "$GITHUB_OUTPUT"
+          fi
+
+          # Go binaries built with Go 1.8 and below are incompatible with QEMU user-level emulation.
+          # See https://github.com/golang/go/commit/2673f9e.
+          if version_ge 1.9; then
+            echo "QEMU_EMULATION_WORKS=1" >> "$GITHUB_OUTPUT"
+          fi
+
+          if version_ge 1.12; then
+            # Better inlining in Go 1.12. See https://go.dev/doc/go1.12#compiler.
+            echo "BETTER_INLINING_AVAILABLE=1" >> "$GITHUB_OUTPUT"
+
+            # Race detector support on linux/arm64 was added in go1.12. See
+            # https://go.dev/doc/go1.12.
+            echo "ARM64_RACE_SUPPORTED=1" >> "$GITHUB_OUTPUT"
+          fi
+
+          if version_ge 1.19; then
+            # Race detector support on linux/s390x was added in go1.19. See
+            # https://go.dev/doc/go1.19.
+            echo "S390X_RACE_SUPPORTED=1" >> "$GITHUB_OUTPUT"
+          fi
+
+          # Race detector binaries crash with:
+          #
+          # FATAL: ThreadSanitizer: unsupported VMA range
+          #
+          # See https://github.com/golang/go/issues/29948.
+          echo "ARM64_UNSUPPORTED_VMA_RANGE=1" >> "$GITHUB_OUTPUT"
+
+          # Race detector binaries crash with:
+          #
+          # ==17==ERROR: ThreadSanitizer failed to allocate 0x7f0000 (8323072) bytes at address 9000001a0000 (errno: 12)
+          #
+          # See https://github.com/golang/go/issues/67881.
+          echo "S390X_THREAD_SANITIZER_FAILED_TO_ALLOCATE=1" >> "$GITHUB_OUTPUT"
+      - name: Check that Get is inlined
+        if: |
+          !startsWith(matrix.go, 'gccgo-') &&
+          steps.configure_environment.outputs.BETTER_INLINING_AVAILABLE
         shell: bash
         run: |
           set -euxo pipefail
 
-          if echo -e '${{ matrix.go }}\n1.12' | sort -V | head -n1 | xargs test 1.12 = ; then
-            go build -gcflags='-m' 2>&1 | grep 'can inline Get$' > /dev/null
-          fi
-      - run: go build -race -v ./...
-        if: ${{ matrix.arch == 'x64' && !matrix.x64_race_broken }}
-      - run: go test -v ./...
-        if: ${{ matrix.arch == 'x64' || matrix.arch == '386'}}
-      - run: go test -race -v ./...
-        if: ${{ matrix.arch == 'x64' && !matrix.x64_race_broken }}
-      - run: go test -bench=. -benchmem -v ./...
-        if: ${{ matrix.arch == 'x64' || matrix.arch == '386'}}
-      - run: go test -bench=. -benchmem -race -v ./...
-        if: ${{ matrix.arch == 'x64' && !matrix.x64_race_broken }}
-      - run: go test -c ./...
-        if: ${{ matrix.arch != 'x64' && matrix.arch != '386'}}
-      - name: 'BuildTestRace with ${{ matrix.go }} for ${{ matrix.arch }}'
-        if: ${{ matrix.arch == 'aarch64' && !matrix.arm64_race_unsupported || matrix.arch == 's390x' && !matrix.s390x_race_unsupported }}
+          go build -gcflags='-m' 2>&1 | grep 'can inline Get$' > /dev/null
+      - name: go build & go test -c
+        shell: bash
+        run: |
+          set -euxo pipefail
+
+          go build -v ./...
+          go test -c -o goid.test ./...
+      - name: go build & go test -c (race)
+        # Race builds aren't supported on linux/386.
+        #
+        # Race builds aren't supported in gccgo.
+        if: |
+          matrix.arch == 'x64' &&
+          !startsWith(matrix.go, 'gccgo-') &&
+          !steps.configure_environment.outputs.RACE_BUILDS_BROKEN
+        shell: bash
+        run: |
+          set -euxo pipefail
+
+          go build -v -race ./...
+          go test -c -race -o goid.race.test ./...
+      - name: go build & go test -c (race)
+        if: |
+          matrix.arch == 'aarch64' &&
+          steps.configure_environment.outputs.ARM64_RACE_SUPPORTED ||
+          matrix.arch == 's390x' &&
+          steps.configure_environment.outputs.S390X_RACE_SUPPORTED
         env:
           CGO_ENABLED: 1
         shell: bash
@@ -292,12 +218,31 @@ jobs:
           sudo apt update
           sudo apt install -y gcc-${{ matrix.arch }}-linux-gnu
 
-          CC=${{ matrix.arch }}-linux-gnu-gcc CC_FOR_TARGET=gcc-${{ matrix.arch }}-linux-gnu go test -c -race -o goid.race.test ./...
-      - name: 'DeleteTestRace with $${{ matrix.go }} for ${{ matrix.arch }}'
-        if: ${{ matrix.arch == 'aarch64' && !matrix.arm64_race_unsupported && matrix.arm64_unsupported_vma_range || matrix.arch == 's390x' && !matrix.s390x_race_unsupported && matrix.s390x_thread_sanitizer_failed_to_allocate }}
-        run: rm goid.race.test
-      - name: 'Test and Bench with ${{ matrix.go }} on ${{ matrix.arch }}'
-        if: ${{ matrix.arch != '386' && matrix.arch != 'x64' && !matrix.qemu_emulation_broken }}
+          export CC=${{ matrix.arch }}-linux-gnu-gcc
+          export CC_FOR_TARGET=gcc-${{ matrix.arch }}-linux-gnu
+
+          go build -v -race ./...
+          go test -c -race -o goid.race.test ./...
+      - run: rm goid.race.test
+        if: |
+          matrix.arch == 'aarch64' &&
+          steps.configure_environment.outputs.ARM64_RACE_SUPPORTED &&
+          steps.configure_environment.outputs.ARM64_UNSUPPORTED_VMA_RANGE ||
+          matrix.arch == 's390x' &&
+          steps.configure_environment.outputs.S390X_RACE_SUPPORTED &&
+          steps.configure_environment.outputs.S390X_THREAD_SANITIZER_FAILED_TO_ALLOCATE
+      - name: Run tests
+        if: ${{ matrix.arch == '386' || matrix.arch == 'x64' }}
+        shell: bash
+        run: |
+          set -euxo pipefail
+            find . -name '*.test' -type f -executable -print0 | \
+              xargs -t -0 -I '{}' sh -c '{} -test.v && {} -test.bench=. -test.benchmem -test.v'
+      - name: Run tests
+        if: |
+          matrix.arch != '386' &&
+          matrix.arch != 'x64' &&
+          steps.configure_environment.outputs.QEMU_EMULATION_WORKS
         uses: uraimo/run-on-arch-action@v2
         with:
           arch: ${{ matrix.arch }}