ci: run memtrack bpf tests on codspeed-macro runners

Author: not-matthias

.github/workflows/ci.yml

@@ -92,7 +92,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, ubuntu-24.04-arm]
+        os: [ubuntu-latest, ubuntu-24.04-arm, codspeed-macro]
         # Each memtrack integration test binary runs its cases serially
         # (eBPF tracker can't overlap with itself in one process), so we
         # shard at the test-binary level to parallelize across jobs.
@@ -126,8 +126,11 @@ jobs:
         run: sudo -E $(which cargo) test --lib --test ${{ matrix.test }} -- --test-threads 1 --nocapture
         working-directory: crates/memtrack
 
-      # Since we ran the tests with sudo, the build artifacts will have root ownership
+      # Since we ran the tests with sudo, the build artifacts will have root
+      # ownership; always restore it so a failed run cannot poison the
+      # workspace of later jobs on persistent self-hosted runners.
       - name: Clean up
+        if: always()
         run: sudo chown -R $USER:$USER . ~/.cargo
 
   benchmarks: