diff --git a/tests/conftest.py b/tests/conftest.py
index 552ba25c4ef..e3aea3a8dfa 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -336,11 +336,12 @@ def microvm_factory(request, record_property, results_dir, netns_factory):
     # if the test failed, save important files from the root of the uVM into `test_results` for troubleshooting
     report = request.node.stash[PHASE_REPORT_KEY]
     if "call" in report and report["call"].failed:
-        dmesg = utils.run_cmd(["dmesg", "-dPx"])
         for uvm in uvm_factory.vms:
             uvm_data = results_dir / uvm.id
             uvm_data.mkdir()
-            uvm_data.joinpath("host-dmesg.log").write_text(dmesg.stdout)
+            uvm_data.joinpath("host-dmesg.log").write_text(
+                utils.run_cmd(["dmesg", "-dPx"]).stdout
+            )
             shutil.copy(f"/firecracker/build/img/{platform.machine()}/id_rsa", uvm_data)
 
             uvm_root = Path(uvm.chroot())
diff --git a/tests/host_tools/memory.py b/tests/host_tools/memory.py
index 690cda38701..93380a9321d 100644
--- a/tests/host_tools/memory.py
+++ b/tests/host_tools/memory.py
@@ -62,7 +62,7 @@ def run(self):
         guest_mem_bytes = self._vm.mem_size_bytes
         try:
             ps = psutil.Process(self._vm.firecracker_pid)
-        except psutil.NoSuchProcess:
+        except (psutil.NoSuchProcess, FileNotFoundError):
             return
         while not self._should_stop:
             try:
diff --git a/tools/devtool b/tools/devtool
index 1e53cc6c6bb..7bf8d4ad6fb 100755
--- a/tools/devtool
+++ b/tools/devtool
@@ -228,7 +228,7 @@ cmd_fix_perms() {
     run_devctr \
         --workdir "$CTR_FC_ROOT_DIR" \
         -- \
-        chown -f -R "$(id -u):$(id -g)" "$CTR_FC_BUILD_DIR" "$CTR_TEST_RESULTS_DIR" "$CTR_CI_ARTIFACTS_PATH"
+        chown -f -R "$(id -u):$(id -g)" "$CTR_FC_BUILD_DIR" "$CTR_TEST_RESULTS_DIR" "$CTR_CI_ARTIFACTS_PATH" $@
 }
 
 # Builds the development container from its Dockerfile.
@@ -890,6 +890,7 @@ cmd_sandbox() {
     cmd_build --release
     ensure_ci_artifacts
     cmd_sh "tmux new env PYTEST_ADDOPTS=--pdbcls=IPython.terminal.debugger:TerminalPdb PYTHONPATH=tests IPYTHONDIR=\$PWD/.ipython ipython -i ./tools/sandbox.py $@"
+    cmd_fix_perms ".ipython"
 }
 
 cmd_sandbox_native() {