Description of problem:
I returned from lunch and found info about crush.

Version-Release number of selected component:
cinnamon-screensaver-unsupported-3.8.2-2.fc28

Additional info:
reporter:       libreport-2.9.5
cmdline:        /usr/bin/python3 /usr/share/cinnamon-screensaver/screensavers/xscreensaver/main
crash_function: open_binary
exception_type: FileNotFoundError
executable:     /usr/share/cinnamon-screensaver/screensavers/xscreensaver/main
interpreter:    python3-3.6.6-1.fc28.x86_64
kernel:         4.18.9-200.fc28.x86_64
runlevel:       N 5
type:           Python3
uid:            1000

Truncated backtrace:
_pslinux.py:1401:wrapper:psutil._exceptions.NoSuchProcess: psutil.NoSuchProcess process no longer exists (pid=15965)

Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/psutil/_pslinux.py", line 1390, in wrapper
    return fun(self, *args, **kwargs)
  File "/usr/lib64/python3.6/site-packages/psutil/_pslinux.py", line 1466, in name
    name = self._parse_stat_file()[0]
  File "/usr/lib64/python3.6/site-packages/psutil/_common.py", line 337, in wrapper
    return fun(self)
  File "/usr/lib64/python3.6/site-packages/psutil/_pslinux.py", line 1429, in _parse_stat_file
    with open_binary("%s/%s/stat" % (self._procfs_path, self.pid)) as f:
  File "/usr/lib64/python3.6/site-packages/psutil/_pslinux.py", line 187, in open_binary
    return open(fname, "rb", **kwargs)
FileNotFoundError: [Errno 2] No such file or directory: '/proc/15965/stat'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/share/cinnamon-screensaver/screensavers/xscreensaver/main", line 117, in on_terminate
    self.kill_plugin()
  File "/usr/share/cinnamon-screensaver/screensavers/xscreensaver/main", line 113, in kill_plugin
    if proc.name() == self.hack:
  File "/usr/lib64/python3.6/site-packages/psutil/__init__.py", line 606, in name
    name = self._proc.name()
  File "/usr/lib64/python3.6/site-packages/psutil/_pslinux.py", line 1401, in wrapper
    raise NoSuchProcess(self.pid, self._name)
psutil._exceptions.NoSuchProcess: psutil.NoSuchProcess process no longer exists (pid=15965)

Local variables in innermost frame:
kwargs: {}
args: ()
self: <psutil._pslinux.Process object at 0x7fce0a0115a0>
fun: <function Process.name at 0x7fce0c9a3c80>