diff --git a/smoke/venv.sh b/smoke/venv.sh
index 8240a21..e7bfea2 100755
--- a/smoke/venv.sh
+++ b/smoke/venv.sh
@@ -11,8 +11,9 @@ TOX=${TOX:-true}
 CYTHON=${CYTHON:-true}
 INSTALL_OR_SKIP=${INSTALL_OR_SKIP:-false}
 
-# clean from possible older runs
-rm -rf venv .tox __pycache__ .pytest* test_*.py *.pyx *.c *.so ensurepiptestroot || :
+# Work from a custom directory
+workdir="$(mktemp --directory)"
+cd "$workdir"
 
 if [ "$INSTALL_OR_SKIP" == "true" ] && [ ! -f "/usr/bin/$PYTHON" ]; then
   dnf -y install "/usr/bin/$PYTHON" || :
@@ -130,3 +131,7 @@ EOF
 
 # A more complex example with pytest
 tox
+
+# Clean up if everything else went well
+cd -
+rm -rf "$workdir"
diff --git a/tests.yml b/tests.yml
index cc1ab6a..da26cbd 100644
--- a/tests.yml
+++ b/tests.yml
@@ -6,6 +6,8 @@
     - dnf:
         name: "*"
         state: latest
+    - ansible.builtin.user:
+        name: testuser
 
 - hosts: localhost
   roles:
@@ -15,56 +17,57 @@
     tests:
     - smoke_default:
         dir: smoke
-        run: ./venv.sh
+        run: runuser testuser -c './venv.sh'
     - smoke27:
         dir: smoke
-        run: VERSION=2.7 METHOD=virtualenv ./venv.sh
+        run: runuser testuser -c 'VERSION=2.7 METHOD=virtualenv ./venv.sh'
     - smoke27_seeder_pip:
         dir: smoke
-        run: VERSION=2.7 METHOD=virtualenv-seeder-pip ./venv.sh
+        run: runuser testuser -c 'VERSION=2.7 METHOD=virtualenv-seeder-pip ./venv.sh'
     - smoke35:
         dir: smoke
-        run: VERSION=3.5 METHOD=virtualenv-no-download INSTALL_OR_SKIP=true ./venv.sh
+        run: runuser testuser -c 'VERSION=3.5 METHOD=virtualenv-no-download INSTALL_OR_SKIP=true ./venv.sh'
     - smoke36:
         dir: smoke
-        run: VERSION=3.6 METHOD=venv TOX=false ./venv.sh
+        run: runuser testuser -c 'VERSION=3.6 METHOD=venv TOX=false ./venv.sh'
     - smoke37:
         dir: smoke
-        run: VERSION=3.7 METHOD=venv ./venv.sh
+        run: runuser testuser -c 'VERSION=3.7 METHOD=venv ./venv.sh'
     - smoke38:
         dir: smoke
-        run: VERSION=3.8 METHOD=venv ./venv.sh
+        run: runuser testuser -c 'VERSION=3.8 METHOD=venv ./venv.sh'
     - smoke39:
         dir: smoke
-        run: VERSION=3.9 METHOD=venv ./venv.sh
+        run: runuser testuser -c 'VERSION=3.9 METHOD=venv ./venv.sh'
     - smoke311:
         dir: smoke
-        run: VERSION=3.11 METHOD=venv CYTHON=false ./venv.sh
+        run: runuser testuser -c 'VERSION=3.11 METHOD=venv CYTHON=false ./venv.sh'
     - smoke39_seeder_pip:
         dir: smoke
-        run: VERSION=3.9 METHOD=virtualenv-seeder-pip ./venv.sh
+        run: runuser testuser -c 'VERSION=3.9 METHOD=virtualenv-seeder-pip ./venv.sh'
     - smoke34_optional:
         dir: smoke
-        run: VERSION=3.4 METHOD=venv INSTALL_OR_SKIP=true ./venv.sh
+        run: runuser testuser -c 'VERSION=3.4 METHOD=venv INSTALL_OR_SKIP=true ./venv.sh'
     - smokepypy:
         dir: smoke
-        run: VERSION=2.7 METHOD=virtualenv PYTHON=pypy ./venv.sh
+        run: runuser testuser -c 'VERSION=2.7 METHOD=virtualenv PYTHON=pypy ./venv.sh'
     - smokepypy38:
         dir: smoke
-        run: VERSION=3.8 METHOD=venv PYTHON=pypy3.8 ./venv.sh
+        run: runuser testuser -c 'VERSION=3.8 METHOD=venv PYTHON=pypy3.8 ./venv.sh'
     - selftest37:
         dir: selftest
-        run: VERSION=3.7 X="-x test_socket -x test_asyncgen -x test_asyncio -x test_compile -x test_concurrent_futures -x test_itertools -x test_multiprocessing_fork -x test_multiprocessing_forkserver -x test_shutil -x test_time -x test_multiprocessing_spawn -x test_threading -x test_wsgiref" ./parallel.sh
+        run: runuser testuser -c 'VERSION=3.7 X="-x test_socket -x test_asyncgen -x test_asyncio -x test_compile -x test_concurrent_futures -x test_itertools -x test_multiprocessing_fork -x test_multiprocessing_forkserver -x test_shutil -x test_time -x test_multiprocessing_spawn -x test_threading -x test_wsgiref" ./parallel.sh'
     - debugtest38:
         dir: selftest
-        run: VERSION=3.8 PYTHON="python3-debug" X="test_ssl" ./parallel.sh
+        run: runuser testuser -c 'VERSION=3.8 PYTHON="python3-debug" X="test_ssl" ./parallel.sh'
     - debugflags:
         dir: flags
-        run: python3-debug ./assertflags.py -O0
+        run: runuser testuser -c 'python3-debug ./assertflags.py -O0'
     - marshalparser_compatibility:
         dir: marshalparser
-        run: SAMPLE=10 test_marshalparser_compatibility.sh
+        run: runuser testuser -c 'SAMPLE=10 test_marshalparser_compatibility.sh'
     required_packages:
+    - util-linux  # for runuser
     - dnf
     - gcc
     - gcc-c++