FileNotFoundError when updating mtime of files in file cache

[NeoLegends]

Sadly only a part of the error message remains, and the rest of the log is lost:

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python3.10/threading.py", line 1016, in _bootstrap_inner
    self.run()
  File "/nas/models/asr/[...]/work/i6_core/tools/
git/CloneGitRepositoryJob.LD5f1wKK7LPo/output/returnn/returnn/util/file_cache.py", line 479, in 
run
    os.utime(filename, None)
FileNotFoundError: [Errno 2] No such file or directory

First we should find out which file it is failing to touch.

[NeoLegends]

@Icemole If this occurs again, kindly post the full log here. :)

[albertz]

First we should find out which file it is failing to touch.

I'm not sure that this really helps us here. But certainly having the full log would be helpful.

Btw, why is filename not printed? It should via #1674, as now it should use better_exchook in the thread, or not?

[NeoLegends]

I think the log came from befire #1674.