this derivation will be built:
  /nix/store/0vk3q21glhzznkf9b41lw6zm1hf6bibw-vm-test-run-nix-grpc-store-acme-substituter.drv
error: Cannot build '/nix/store/0vk3q21glhzznkf9b41lw6zm1hf6bibw-vm-test-run-nix-grpc-store-acme-substituter.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/szywn0aw6v4akm9f4hzrqh5wjz60kwgn-vm-test-run-nix-grpc-store-acme-substituter
       Last 25 log lines:
       >         f'--no-pager show "{unit}" --property="{property}"',
       >         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       >         user,
       >         ^^^^^
       >     )
       >     ^
       >   File "/nix/store/raq2dn1v9hnqcadzwci0xzc3ayjzpqy3-nixos-test-driver-1.1/lib/python3.14/site-packages/test_driver/machine/__init__.py", line 370, in systemctl
       >     return self.execute(f"systemctl {q}")
       >            ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
       >   File "/nix/store/raq2dn1v9hnqcadzwci0xzc3ayjzpqy3-nixos-test-driver-1.1/lib/python3.14/site-packages/test_driver/machine/__init__.py", line 722, in execute
       >     return self._execute(
       >            ~~~~~~~~~~~~~^
       >         command=command,
       >         ^^^^^^^^^^^^^^^^
       >     ...<2 lines>...
       >         timeout=as_timedelta(timeout) if timeout is not None else None,
       >         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       >     )
       >     ^
       >   File "/nix/store/raq2dn1v9hnqcadzwci0xzc3ayjzpqy3-nixos-test-driver-1.1/lib/python3.14/site-packages/test_driver/machine/__init__.py", line 983, in _execute
       >     self.connect()
       >     ~~~~~~~~~~~~^^
       >   File "/nix/store/raq2dn1v9hnqcadzwci0xzc3ayjzpqy3-nixos-test-driver-1.1/lib/python3.14/site-packages/test_driver/machine/__init__.py", line 1172, in connect
       >     raise RuntimeError("Shell did not start in time")
       > RuntimeError: Shell did not start in time
       For full logs, run:
         nix log /nix/store/0vk3q21glhzznkf9b41lw6zm1hf6bibw-vm-test-run-nix-grpc-store-acme-substituter.drv