Handle files that disapper during transfer

primary.py

@@ -135,7 +135,12 @@ class Server:
             writer = tar_stream.TarWriter(stdout)
             for path in readlines_nul(stdin):
                 arcname = path.decode('utf8', errors='surrogateescape')
-                writer.add(os.path.join(cwd, arcname), arcname=arcname)
+                try:
+                    full_path = os.path.join(cwd, arcname)
+                    writer.add(full_path, arcname=arcname)
+                except FileNotFoundError:
+                    self.log.MESSAGE("File disappeared '%s'" % full_path)
+                    pass
             writer.close()
             self.failed = False
         finally: