### Check existing issues - [x] I've verified that this bug isn't described by any existing issues. ### Bug description I'm using a gcloud compute vm to build snaps. Whenever I am closing the ssh connection, or if the gcloud instance shuts down, and I restart it and continue the snapcraft build, LXD fails to find the old device. ### Steps to reproduce 1. Connect to a gcloud compute instance 2. Start Building the snap 3. Stop the build 4. Close the ssh connection and reconnect 5. See this error ### Environment GCloud Compute instance Snapcraft: version 8.13.2 revision 16570 LXD: version 5.21.4-9eb1368 revision 36971 ### snapcraft.yaml ```yaml ``` ### Log output ```shell Starting instance 2025-12-29 06:54:28.292 Executing on host: lxc --project snapcraft info local:snapcraft-qt-full-amd64-524348 2025-12-29 06:54:28.408 Executing on host: lxc --project snapcraft start local:snapcraft-qt-full-amd64-524348 2025-12-29 06:54:28.540 Failed to start 'snapcraft-qt-full-amd64-524348'. 2025-12-29 06:54:28.540 Detailed information: * Command that failed: 'lxc --project snapcraft start local:snapcraft-qt-full-amd64-524348' * Command exit code: 1 * Command standard error output: b'Error: Failed start validation for device "disk-/tmp/craft-state": Missing source path "/run/user/400433789/356321" for disk "disk-/tmp/craft-state"\nTry `lxc info --show-log local:snapcraft-qt-full-amd64-524348` for more info\n' 2025-12-29 06:54:28.555 Traceback (most recent call last): 2025-12-29 06:54:28.555 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_providers/lxd/lxc.py", line 1187, in start 2025-12-29 06:54:28.556 self._run_lxc(command, capture_output=True, project=project) 2025-12-29 06:54:28.556 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_providers/lxd/lxc.py", line 206, in _run_lxc 2025-12-29 06:54:28.556 return subprocess.run( 2025-12-29 06:54:28.556 ^^^^^^^^^^^^^^^ 2025-12-29 06:54:28.556 File "/snap/snapcraft/current/usr/lib/python3.12/subprocess.py", line 571, in run 2025-12-29 06:54:28.556 raise CalledProcessError(retcode, process.args, 2025-12-29 06:54:28.556 subprocess.CalledProcessError: Command '['lxc', '--project', 'snapcraft', 'start', 'local:snapcraft-qt-full-amd64-524348']' returned non-zero exit status 1. 2025-12-29 06:54:28.556 2025-12-29 06:54:28.556 The above exception was the direct cause of the following exception: 2025-12-29 06:54:28.557 Traceback (most recent call last): 2025-12-29 06:54:28.557 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_application/application.py", line 663, in run 2025-12-29 06:54:28.557 return_code = self._run_inner() 2025-12-29 06:54:28.557 ^^^^^^^^^^^^^^^^^ 2025-12-29 06:54:28.557 File "/snap/snapcraft/16570/lib/python3.12/site-packages/snapcraft/application.py", line 183, in _run_inner 2025-12-29 06:54:28.557 return_code = super()._run_inner() 2025-12-29 06:54:28.557 ^^^^^^^^^^^^^^^^^^^^ 2025-12-29 06:54:28.557 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_application/application.py", line 640, in _run_inner 2025-12-29 06:54:28.557 return_code = dispatcher.run() or os.EX_OK 2025-12-29 06:54:28.557 ^^^^^^^^^^^^^^^^ 2025-12-29 06:54:28.557 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_cli/dispatcher.py", line 564, in run 2025-12-29 06:54:28.558 return self._loaded_command.run(self._parsed_command_args) 2025-12-29 06:54:28.558 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2025-12-29 06:54:28.558 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_application/commands/base.py", line 222, in run 2025-12-29 06:54:28.558 result = self._run(parsed_args, **kwargs) or result 2025-12-29 06:54:28.558 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2025-12-29 06:54:28.558 File "/snap/snapcraft/16570/lib/python3.12/site-packages/snapcraft/commands/lifecycle.py", line 74, in _run 2025-12-29 06:54:28.558 super()._run(parsed_args) 2025-12-29 06:54:28.558 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_application/commands/lifecycle.py", line 619, in _run 2025-12-29 06:54:28.558 return super()._run(parsed_args=parsed_args, step_name=step_name) 2025-12-29 06:54:28.558 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 2025-12-29 06:54:28.559 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_application/commands/lifecycle.py", line 232, in _run 2025-12-29 06:54:28.559 self._run_manager_for_build_plan(fetch_service_policy) 2025-12-29 06:54:28.559 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_application/commands/lifecycle.py", line 97, in _run_manager_for_build_plan 2025-12-29 06:54:28.559 provider.run_managed(build, bool(fetch_service_policy)) 2025-12-29 06:54:28.559 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_application/services/provider.py", line 457, in run_managed 2025-12-29 06:54:28.559 with self.instance( 2025-12-29 06:54:28.559 File "/snap/snapcraft/current/usr/lib/python3.12/contextlib.py", line 137, in __enter__ 2025-12-29 06:54:28.559 return next(self.gen) 2025-12-29 06:54:28.559 ^^^^^^^^^^^^^^ 2025-12-29 06:54:28.559 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_application/services/provider.py", line 185, in instance 2025-12-29 06:54:28.559 with provider.launched_environment( 2025-12-29 06:54:28.559 File "/snap/snapcraft/current/usr/lib/python3.12/contextlib.py", line 137, in __enter__ 2025-12-29 06:54:28.560 return next(self.gen) 2025-12-29 06:54:28.560 ^^^^^^^^^^^^^^ 2025-12-29 06:54:28.560 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_providers/lxd/lxd_provider.py", line 168, in launched_environment 2025-12-29 06:54:28.560 instance = launch( 2025-12-29 06:54:28.560 ^^^^^^^ 2025-12-29 06:54:28.560 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_providers/lxd/launcher.py", line 780, in launch 2025-12-29 06:54:28.560 if instance.exists() and _launch_existing_instance( 2025-12-29 06:54:28.560 ^^^^^^^^^^^^^^^^^^^^^^^^^^ 2025-12-29 06:54:28.560 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_providers/lxd/launcher.py", line 429, in _launch_existing_instance 2025-12-29 06:54:28.560 instance.start() 2025-12-29 06:54:28.560 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_providers/lxd/lxd_instance.py", line 568, in start 2025-12-29 06:54:28.560 self.lxc.start( 2025-12-29 06:54:28.561 File "/snap/snapcraft/16570/lib/python3.12/site-packages/craft_providers/lxd/lxc.py", line 1189, in start 2025-12-29 06:54:28.561 raise LXDError( 2025-12-29 06:54:28.561 craft_providers.lxd.errors.LXDError: Failed to start 'snapcraft-qt-full-amd64-524348'. 2025-12-29 06:54:28.561 * Command that failed: 'lxc --project snapcraft start local:snapcraft-qt-full-amd64-524348' 2025-12-29 06:54:28.561 * Command exit code: 1 2025-12-29 06:54:28.561 * Command standard error output: b'Error: Failed start validation for device "disk-/tmp/craft-state": Missing source path "/run/user/400433789/356321" for disk "disk-/tmp/craft-state"\nTry `lxc info --show-log local:snapcraft-qt-full-amd64-524348` for more info\n' ```