diff --git a/lib/spack/spack/installer.py b/lib/spack/spack/installer.py
index b3d45f0bb5b..b3f54b9b785 100644
--- a/lib/spack/spack/installer.py
+++ b/lib/spack/spack/installer.py
@@ -2302,7 +2302,7 @@ def install(self) -> None:
                 # Do not clean up this was an overwrite that wasn't completed
                 overwrite = spec.dag_hash() in task.request.overwrite
                 rec, _ = self._check_db(pkg.spec)
-                incomplete = task.request.overwrite_time > rec.installation_time
+                incomplete = rec is None or task.request.overwrite_time > rec.installation_time
                 if not (overwrite and incomplete):
                     self._cleanup_task(pkg)
 
diff --git a/lib/spack/spack/test/installer.py b/lib/spack/spack/test/installer.py
index a47824d8c9c..e9f5ce1d94c 100644
--- a/lib/spack/spack/test/installer.py
+++ b/lib/spack/spack/test/installer.py
@@ -79,7 +79,7 @@ def create_build_task(
 
 def create_install_task(
     pkg: spack.package_base.PackageBase, install_args: Optional[dict] = None
-) -> inst.BuildTask:
+) -> inst.InstallTask:
     request = inst.BuildRequest(pkg, {} if install_args is None else install_args)
     return inst.InstallTask(pkg, request, False, 0, 0, inst.STATUS_ADDED, set())