emerge portage

Local copy of remote index is up-to-date and will be used.

Local copy of remote index is up-to-date and will be used.
Calculating dependencies... done!
Traceback (most recent call last):
  File "/usr/lib/python-exec/python3.7/emerge", line 51, in <module>
    retval = emerge_main()
  File "/usr/lib/python3.7/site-packages/_emerge/main.py", line 1317, in emerge_main
    return run_action(emerge_config)
  File "/usr/lib/python3.7/site-packages/_emerge/actions.py", line 3376, in run_action
    retval = action_build(emerge_config, spinner=spinner)
  File "/usr/lib/python3.7/site-packages/_emerge/actions.py", line 354, in action_build
    settings, trees, myopts, myparams, myaction, myfiles, spinner)
  File "/usr/lib/python3.7/site-packages/_emerge/depgraph.py", line 9928, in backtrack_depgraph
    myaction, myfiles, spinner)
  File "/usr/lib/python3.7/site-packages/_emerge/depgraph.py", line 9965, in _backtrack_depgraph
    success, favorites = mydepgraph.select_files(myfiles)
  File "/usr/lib/python3.7/site-packages/_emerge/depgraph.py", line 4010, in select_files
    return self._select_files(args)
  File "/usr/lib/python3.7/site-packages/_emerge/depgraph.py", line 4019, in _select_files
    self._load_vdb()
  File "/usr/lib/python3.7/site-packages/_emerge/depgraph.py", line 672, in _load_vdb
    scheduler.start()
  File "/usr/lib/python3.7/site-packages/_emerge/AsynchronousTask.py", line 30, in start
    self._start()
  File "/usr/lib/python3.7/site-packages/portage/util/_async/AsyncScheduler.py", line 90, in _start
    self._schedule()
  File "/usr/lib/python3.7/site-packages/_emerge/PollScheduler.py", line 152, in _schedule
    self._schedule_tasks()
  File "/usr/lib/python3.7/site-packages/portage/util/_async/AsyncScheduler.py", line 59, in _schedule_tasks
    task = self._next_task()
  File "/usr/lib/python3.7/site-packages/portage/util/_async/TaskScheduler.py", line 20, in _next_task
    return next(self._task_iter)
  File "/usr/lib/python3.7/site-packages/_emerge/depgraph.py", line 689, in _dynamic_deps_preload
    pkg.cpv, ebuild_path, repo_path)
  File "/usr/lib/python3.7/site-packages/portage/dbapi/porttree.py", line 591, in _pull_valid_cache
    if auxdb.validate_entry(metadata, ebuild_hash, eclass_db):
  File "/usr/lib/python3.7/site-packages/portage/cache/template.py", line 232, in validate_entry
    if self._validate_entry(chf_type, entry, ebuild_hash, eclass_db):
  File "/usr/lib/python3.7/site-packages/portage/cache/template.py", line 244, in _validate_entry
    if entry_hash != getattr(ebuild_hash, chf_type):
  File "/usr/lib/python3.7/site-packages/portage/eclass_cache.py", line 46, in __getattr__
    val = checksum.perform_checksum(self.location, hashname)[0]
  File "/usr/lib/python3.7/site-packages/portage/checksum.py", line 529, in perform_checksum
    myhash, mysize = hashfunc_map[hashname].checksum_file(myfilename)
  File "/usr/lib/python3.7/site-packages/portage/checksum.py", line 88, in checksum_file
    data = f.read(blocksize)
OSError: [Errno 5] Input/output error