[rqd] Fix non ASCII chars (#1335)

- Ensure consistent handling of non-ASCII characters in logs
- Always encode lines to ASCII with an 'ignore' option to discard non-ASCII characters.
- Removed unused file_descriptor block and ensured consistent encoding logic.

This change prevents UnicodeEncodeError and ensures consistent log outputs.

rqd/rqd/rqcore.py

@@ -318,17 +318,13 @@ def runLinux(self):
             else:
                 tempCommand += [self._createCommandFile(runFrame.command)]
 
-            if rqd.rqconstants.RQD_PREPEND_TIMESTAMP:
-                file_descriptor = subprocess.PIPE
-            else:
-                file_descriptor = self.rqlog
             # pylint: disable=subprocess-popen-preexec-fn
             frameInfo.forkedCommand = subprocess.Popen(tempCommand,
                                                        env=self.frameEnv,
                                                        cwd=self.rqCore.machine.getTempPath(),
                                                        stdin=subprocess.PIPE,
-                                                       stdout=file_descriptor,
-                                                       stderr=file_descriptor,
+                                                       stdout=subprocess.PIPE,
+                                                       stderr=subprocess.PIPE,
                                                        close_fds=True,
                                                        preexec_fn=os.setsid)
         finally:
@@ -343,6 +339,16 @@ def runLinux(self):
 
         if rqd.rqconstants.RQD_PREPEND_TIMESTAMP:
             pipe_to_file(frameInfo.forkedCommand.stdout, frameInfo.forkedCommand.stderr, self.rqlog)
+        else:
+            with open(self.rqlog, 'a') as f:
+                # Convert to ASCII while discarding characters that can not be encoded
+                for line in frameInfo.forkedCommand.stdout:
+                    line = line.encode('ascii', 'ignore')
+                    f.write(line.decode('ascii') + '\n')
+                for line in frameInfo.forkedCommand.stderr:
+                    line = line.encode('ascii', 'ignore')
+                    f.write(line.decode('ascii') + '\n')
+
         returncode = frameInfo.forkedCommand.wait()
 
         # Find exitStatus and exitSignal
@@ -1222,6 +1228,8 @@ def print_and_flush_ln(fd, last_timestamp):
 
         remainder = lines[-1]
         for line in lines[0:-1]:
+            # Convert to ASCII while discarding characters that can not be encoded
+            line = line.encode('ascii', 'ignore')
             print("[%s] %s" % (curr_line_timestamp, line), file=outfile)
         outfile.flush()
         os.fsync(outfile)