BUG: shutil.SameFileError when running Using atomate2 with FireWorks tutorial

**Describe the bug** Same as https://github.com/materialsproject/atomate2/issues/1248 but I am raising up a new issue because it is related to tutorial which supposed to be run out of the box: When I run tutorial [Using atomate2 with FireWorks](https://materialsproject.github.io/atomate2/user/fireworks.html), first job completes successfully, but second fails with shutil.SameFileError: PosixPath('...INCAR.gz') and PosixPath('...INCAR.gz') are the same file **To Reproduce** Steps to reproduce the behavior: 1. Prepare Fireworks Slurm FireWorker, Launchpad and queue adapter. 2. In python console execute the code from tutorial: ``` from fireworks import LaunchPad from atomate2.vasp.flows.core import RelaxBandStructureMaker from atomate2.vasp.powerups import add_metadata_to_flow from jobflow.managers.fireworks import flow_to_workflow from pymatgen.core import Structure # construct a rock salt MgO structure mgo_structure = Structure( lattice=[[0, 2.13, 2.13], [2.13, 0, 2.13], [2.13, 2.13, 0]], species=["Mg", "O"], coords=[[0, 0, 0], [0.5, 0.5, 0.5]], ) # make a band structure flow to optimise the structure and obtain the band structure bandstructure_flow = RelaxBandStructureMaker().make(mgo_structure) # (Optional) add metadata to the flow task document. # Could be useful to filter specific results from the database. # For e.g., adding material project ID for the compound, use following lines bandstructure_flow = add_metadata_to_flow( flow=bandstructure_flow, additional_fields={"mp_id": "mp-190"}, ) # convert the flow to a fireworks WorkFlow object wf = flow_to_workflow(bandstructure_flow) # submit the workflow to the FireWorks launchpad lpad = LaunchPad.auto_load() lpad.add_wf(wf) ``` Should print something like `2026-03-29 12:30:51,697 INFO Added a workflow. id_map: {-5: 1, -4: 2, -3: 3, -2: 4, -1: 5}` in console. 3. Inspect workflow being ready to submit `get_wflows`: ``` { "state": "READY", "name": "relax and band structure--1", "created_on": "2026-03-29T04:30:50.635000", "states_list": "W-W-W-W-REA" } ``` 4. Submit first task `qlaunch singleshot`: ``` 2026-03-29 12:31:06,261 INFO moving to launch_dir /public/home/xtalgo/tests/a2 2026-03-29 12:31:06,262 INFO submitting queue script 2026-03-29 12:31:06,281 INFO Job submission was successful and job_id is 5135727 ``` 5. Relaxation task will be submitted and finished quickly. Wait until it completes and all .gz files are generated: ``` ls AECCAR0.gz CHG.gz EIGENVAL.gz FW_submit.script KPOINTS.gz OUTCAR.gz POTCAR.gz std_err.txt XDATCAR.gz AECCAR1.gz CONTCAR.gz FW_job-5135727.error IBZKPT.gz KPOINTS.orig.gz PCDAT.gz POTCAR.orig.gz vasp.out.gz AECCAR2.gz custodian.json.gz FW_job-5135727.out INCAR.gz LOCPOT.gz POSCAR.gz PROCAR.gz vasprun.xml.gz CHGCAR.gz DOSCAR.gz FW.json INCAR.orig.gz OSZICAR.gz POSCAR.orig.gz REPORT.gz WAVECAR.gz ``` `lpad get_wflows` now reports ``` { "state": "RUNNING", "name": "relax and band structure--1", "created_on": "2026-03-29T04:30:50.635000", "states_list": "W-W-W-REA-C" } ``` 6. Submit the next task with `qlaunch singleshot`: ``` 2026-03-29 12:33:45,493 INFO moving to launch_dir /public/home/xtalgo/tests/a2 2026-03-29 12:33:45,494 INFO submitting queue script 2026-03-29 12:33:45,513 INFO Job submission was successful and job_id is 5135781 ``` See the error: ``` lpad get_wflows { "state": "FIZZLED", "name": "relax and band structure--1", "created_on": "2026-03-29T04:30:50.635000", "states_list": "W-W-W-F-C" } ``` ``` cat FW_job-5135781.error Traceback (most recent call last): File "/public/home/xtalgo/miniconda3/envs/camd/lib/python3.12/site-packages/fireworks/core/rocket.py", line 265, in run m_action = t.run_task(my_spec) ^^^^^^^^^^^^^^^^^^^ File "/public/home/xtalgo/miniconda3/envs/camd/lib/python3.12/site-packages/jobflow/managers/fireworks.py", line 177, in run_task response = job.run(store=store) ^^^^^^^^^^^^^^^^^^^^ File "/public/home/xtalgo/miniconda3/envs/camd/lib/python3.12/site-packages/jobflow/core/job.py", line 604, in run response = function(*self.function_args, **self.function_kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/public/home/xtalgo/miniconda3/envs/camd/lib/python3.12/site-packages/atomate2/vasp/jobs/base.py", line 214, in make copy_vasp_outputs(prev_dir, **self.copy_vasp_kwargs) File "/public/home/xtalgo/miniconda3/envs/camd/lib/python3.12/site-packages/atomate2/utils/file_client.py", line 586, in gen_file_client return func(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^ File "/public/home/xtalgo/miniconda3/envs/camd/lib/python3.12/site-packages/atomate2/vasp/files.py", line 89, in copy_vasp_outputs copy_files( File "/public/home/xtalgo/miniconda3/envs/camd/lib/python3.12/site-packages/atomate2/utils/file_client.py", line 588, in gen_file_client return func(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^ File "/public/home/xtalgo/miniconda3/envs/camd/lib/python3.12/site-packages/atomate2/common/files.py", line 73, in copy_files file_client.copy(from_file, to_file, src_host=src_host) File "/public/home/xtalgo/miniconda3/envs/camd/lib/python3.12/site-packages/atomate2/utils/file_client.py", line 240, in copy shutil.copy2(src_filename, dest_filename) File "/public/home/xtalgo/miniconda3/envs/camd/lib/python3.12/shutil.py", line 463, in copy2 copyfile(src, dst, follow_symlinks=follow_symlinks) File "/public/home/xtalgo/miniconda3/envs/camd/lib/python3.12/shutil.py", line 240, in copyfile raise SameFileError("{!r} and {!r} are the same file".format(src, dst)) shutil.SameFileError: PosixPath('/public/home/xtalgo/tests/a2/INCAR.gz') and PosixPath('/public/home/xtalgo/tests/a2/INCAR.gz') are the same file ``` **Expected behavior** I expect the tutorial to work out of the box without need modifying the source code of the atomate2 package, which should clean up files properly."