diff --git a/lldb/source/API/SBCommandInterpreter.cpp b/lldb/source/API/SBCommandInterpreter.cpp
--- a/lldb/source/API/SBCommandInterpreter.cpp
+++ b/lldb/source/API/SBCommandInterpreter.cpp
@@ -185,7 +185,6 @@
   } else {
     result->AppendError(
         "SBCommandInterpreter or the command line is not valid");
-    result->SetStatus(eReturnStatusFailed);
   }
 
   return result.GetStatus();
@@ -203,7 +202,6 @@
 
   if (!IsValid()) {
     result->AppendError("SBCommandInterpreter is not valid.");
-    result->SetStatus(eReturnStatusFailed);
     return;
   }
 
@@ -211,7 +209,6 @@
     SBStream s;
     file.GetDescription(s);
     result->AppendErrorWithFormat("File is not valid: %s.", s.GetData());
-    result->SetStatus(eReturnStatusFailed);
   }
 
   FileSpec tmp_spec = file.ref();
@@ -439,7 +436,6 @@
   } else {
     result->AppendError(
         "SBCommandInterpreter or the command line is not valid");
-    result->SetStatus(eReturnStatusFailed);
   }
 }
 
@@ -469,7 +465,6 @@
     m_opaque_ptr->SourceInitFileHome(result.ref());
   } else {
     result->AppendError("SBCommandInterpreter is not valid");
-    result->SetStatus(eReturnStatusFailed);
   }
 }
 
@@ -487,7 +482,6 @@
     m_opaque_ptr->SourceInitFileHome(result.ref(), is_repl);
   } else {
     result->AppendError("SBCommandInterpreter is not valid");
-    result->SetStatus(eReturnStatusFailed);
   }
 }
 
@@ -506,7 +500,6 @@
     m_opaque_ptr->SourceInitFileCwd(result.ref());
   } else {
     result->AppendError("SBCommandInterpreter is not valid");
-    result->SetStatus(eReturnStatusFailed);
   }
 }
 
diff --git a/lldb/source/Breakpoint/BreakpointIDList.cpp b/lldb/source/Breakpoint/BreakpointIDList.cpp
--- a/lldb/source/Breakpoint/BreakpointIDList.cpp
+++ b/lldb/source/Breakpoint/BreakpointIDList.cpp
@@ -141,7 +141,6 @@
       if (!error.Success()) {
         new_args.Clear();
         result.AppendError(error.AsCString());
-        result.SetStatus(eReturnStatusFailed);
         return;
       } else
         names_found.insert(std::string(current_arg));
@@ -170,7 +169,6 @@
             new_args.Clear();
             result.AppendErrorWithFormat("'%d' is not a valid breakpoint ID.\n",
                                          bp_id->GetBreakpointID());
-            result.SetStatus(eReturnStatusFailed);
             return;
           }
           const size_t num_locations = breakpoint_sp->GetNumLocations();
@@ -199,7 +197,6 @@
       new_args.Clear();
       result.AppendErrorWithFormat("'%s' is not a valid breakpoint ID.\n",
                                    range_from.str().c_str());
-      result.SetStatus(eReturnStatusFailed);
       return;
     }
 
@@ -208,7 +205,6 @@
       new_args.Clear();
       result.AppendErrorWithFormat("'%s' is not a valid breakpoint ID.\n",
                                    range_to.str().c_str());
-      result.SetStatus(eReturnStatusFailed);
       return;
     }
     break_id_t start_bp_id = start_bp->GetBreakpointID();
@@ -224,7 +220,6 @@
                          "both ends of range must specify"
                          " a breakpoint location, or neither can "
                          "specify a breakpoint location.");
-      result.SetStatus(eReturnStatusFailed);
       return;
     }
 
@@ -247,7 +242,6 @@
             " must be within the same major breakpoint; you specified two"
             " different major breakpoints, %d and %d.\n",
             start_bp_id, end_bp_id);
-        result.SetStatus(eReturnStatusFailed);
         return;
       }
     }
diff --git a/lldb/source/Interpreter/CommandAlias.cpp b/lldb/source/Interpreter/CommandAlias.cpp
--- a/lldb/source/Interpreter/CommandAlias.cpp
+++ b/lldb/source/Interpreter/CommandAlias.cpp
@@ -47,7 +47,6 @@
     if (!args_or) {
       result.AppendError(toString(args_or.takeError()));
       result.AppendError("Unable to create requested alias.\n");
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
     args = std::move(*args_or);
diff --git a/lldb/source/Interpreter/CommandInterpreter.cpp b/lldb/source/Interpreter/CommandInterpreter.cpp
--- a/lldb/source/Interpreter/CommandInterpreter.cpp
+++ b/lldb/source/Interpreter/CommandInterpreter.cpp
@@ -1465,7 +1465,6 @@
                                    "need at least %d arguments to use "
                                    "this alias.\n",
                                    index);
-      result.SetStatus(eReturnStatusFailed);
       return nullptr;
     } else {
       size_t strpos = raw_input_string.find(cmd_args.GetArgumentAtIndex(index));
@@ -1658,7 +1657,6 @@
 
   if (WasInterrupted()) {
     result.AppendError("interrupted");
-    result.SetStatus(eReturnStatusFailed);
     return false;
   }
 
@@ -1694,7 +1692,6 @@
       } else {
         result.AppendErrorWithFormat("Could not find entry: %s in history",
                                      command_string.c_str());
-        result.SetStatus(eReturnStatusFailed);
         return false;
       }
     }
@@ -1708,7 +1705,6 @@
 
     if (m_command_history.IsEmpty()) {
       result.AppendError("empty command");
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -1717,7 +1713,6 @@
     original_command_string = command_line;
     if (m_repeat_command.empty()) {
       result.AppendError("No auto repeat.");
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -1731,7 +1726,6 @@
 
   if (error.Fail()) {
     result.AppendError(error.AsCString());
-    result.SetStatus(eReturnStatusFailed);
     return false;
   }
 
@@ -1999,7 +1993,6 @@
                                      "need at least %d arguments to use "
                                      "this alias.\n",
                                      index);
-        result.SetStatus(eReturnStatusFailed);
         return;
       } else {
         // Find and remove cmd_args.GetArgumentAtIndex(i) from raw_input_string
@@ -2169,7 +2162,6 @@
       result.SetStatus(eReturnStatusSuccessFinishNoResult);
     } else {
       result.AppendError(InitFileWarning);
-      result.SetStatus(eReturnStatusFailed);
     }
   }
   }
@@ -2331,7 +2323,6 @@
             "Aborting reading of commands after command #%" PRIu64
             ": '%s' failed with %s",
             (uint64_t)idx, cmd, error_msg.str().c_str());
-        result.SetStatus(eReturnStatusFailed);
         m_debugger.SetAsyncExecution(old_async_execution);
         return;
       } else if (options.GetPrintResults()) {
@@ -2427,7 +2418,6 @@
     result.AppendErrorWithFormat(
         "Error reading commands from file %s - file not found.\n",
         cmd_file.GetFilename().AsCString("<Unknown>"));
-    result.SetStatus(eReturnStatusFailed);
     return;
   }
 
@@ -2439,7 +2429,6 @@
     result.AppendErrorWithFormatv(
         "error: an error occurred read file '{0}': {1}\n", cmd_file_path,
         llvm::fmt_consume(input_file_up.takeError()));
-    result.SetStatus(eReturnStatusFailed);
     return;
   }
   FileSP input_file_sp = FileSP(std::move(input_file_up.get()));
@@ -3184,7 +3173,6 @@
         result.AppendErrorWithFormat("'%s' is not a valid command.\n",
                                      next_word.c_str());
       }
-      result.SetStatus(eReturnStatusFailed);
       return nullptr;
     }
 
@@ -3196,7 +3184,6 @@
             cmd_obj->GetCommandName().str().c_str(),
             next_word.empty() ? "" : next_word.c_str(),
             next_word.empty() ? " -- " : " ", suffix.c_str());
-        result.SetStatus(eReturnStatusFailed);
         return nullptr;
       }
     } else {
@@ -3232,7 +3219,6 @@
               result.AppendErrorWithFormat(
                   "the '%s' command doesn't support the --gdb-format option\n",
                   cmd_obj->GetCommandName().str().c_str());
-              result.SetStatus(eReturnStatusFailed);
               return nullptr;
             }
           }
@@ -3241,7 +3227,6 @@
         default:
           result.AppendErrorWithFormat(
               "unknown command shorthand suffix: '%s'\n", suffix.c_str());
-          result.SetStatus(eReturnStatusFailed);
           return nullptr;
         }
       }
diff --git a/lldb/source/Interpreter/Options.cpp b/lldb/source/Interpreter/Options.cpp
--- a/lldb/source/Interpreter/Options.cpp
+++ b/lldb/source/Interpreter/Options.cpp
@@ -137,7 +137,6 @@
     result.SetStatus(eReturnStatusSuccessFinishNoResult);
   } else {
     result.AppendError("invalid combination of options for the given command");
-    result.SetStatus(eReturnStatusFailed);
   }
 
   return options_are_valid;
diff --git a/lldb/source/Interpreter/ScriptInterpreter.cpp b/lldb/source/Interpreter/ScriptInterpreter.cpp
--- a/lldb/source/Interpreter/ScriptInterpreter.cpp
+++ b/lldb/source/Interpreter/ScriptInterpreter.cpp
@@ -36,14 +36,12 @@
 void ScriptInterpreter::CollectDataForBreakpointCommandCallback(
     std::vector<std::reference_wrapper<BreakpointOptions>> &bp_options_vec,
     CommandReturnObject &result) {
-  result.SetStatus(eReturnStatusFailed);
   result.AppendError(
       "This script interpreter does not support breakpoint callbacks.");
 }
 
 void ScriptInterpreter::CollectDataForWatchpointCommandCallback(
     WatchpointOptions *bp_options, CommandReturnObject &result) {
-  result.SetStatus(eReturnStatusFailed);
   result.AppendError(
       "This script interpreter does not support watchpoint callbacks.");
 }
diff --git a/lldb/source/Plugins/LanguageRuntime/RenderScript/RenderScriptRuntime/RenderScriptRuntime.cpp b/lldb/source/Plugins/LanguageRuntime/RenderScript/RenderScriptRuntime/RenderScriptRuntime.cpp
--- a/lldb/source/Plugins/LanguageRuntime/RenderScript/RenderScriptRuntime/RenderScriptRuntime.cpp
+++ b/lldb/source/Plugins/LanguageRuntime/RenderScript/RenderScriptRuntime/RenderScriptRuntime.cpp
@@ -4187,7 +4187,6 @@
       result.AppendErrorWithFormat("'%s' takes 1 argument of reduction name, "
                                    "and an optional kernel type list",
                                    m_cmd_name.c_str());
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -4201,7 +4200,6 @@
     auto coord = m_options.m_have_coord ? &m_options.m_coord : nullptr;
     if (!runtime->PlaceBreakpointOnReduction(target, outstream, name, coord,
                                              m_options.m_kernel_types)) {
-      result.SetStatus(eReturnStatusFailed);
       result.AppendError("Error: unable to place breakpoint on reduction");
       return false;
     }
@@ -4289,7 +4287,6 @@
       result.AppendErrorWithFormat(
           "'%s' takes 1 argument of kernel name, and an optional coordinate.",
           m_cmd_name.c_str());
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -4302,7 +4299,6 @@
     auto name = command.GetArgumentAtIndex(0);
     auto coord = m_options.m_have_coord ? &m_options.m_coord : nullptr;
     if (!runtime->PlaceBreakpointOnKernel(target, outstream, name, coord)) {
-      result.SetStatus(eReturnStatusFailed);
       result.AppendErrorWithFormat(
           "Error: unable to set breakpoint on kernel '%s'", name);
       return false;
@@ -4340,7 +4336,6 @@
     if (argc != 1) {
       result.AppendErrorWithFormat(
           "'%s' takes 1 argument of 'enable' or 'disable'", m_cmd_name.c_str());
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -4359,7 +4354,6 @@
     } else {
       result.AppendErrorWithFormat(
           "Argument must be either 'enable' or 'disable'");
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -4566,7 +4560,6 @@
       result.AppendErrorWithFormat("'%s' takes 1 argument, an allocation ID. "
                                    "As well as an optional -f argument",
                                    m_cmd_name.c_str());
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -4581,7 +4574,6 @@
     if (!success) {
       result.AppendErrorWithFormat("invalid allocation id argument '%s'",
                                    id_cstr);
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -4606,7 +4598,6 @@
         std::string error = llvm::toString(file.takeError());
         result.AppendErrorWithFormat("Couldn't open file '%s': %s",
                                      path.c_str(), error.c_str());
-        result.SetStatus(eReturnStatusFailed);
         return false;
       }
     } else
@@ -4715,7 +4706,6 @@
       result.AppendErrorWithFormat(
           "'%s' takes 2 arguments, an allocation ID and filename to read from.",
           m_cmd_name.c_str());
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -4730,7 +4720,6 @@
     if (!success) {
       result.AppendErrorWithFormat("invalid allocation id argument '%s'",
                                    id_cstr);
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -4766,7 +4755,6 @@
       result.AppendErrorWithFormat(
           "'%s' takes 2 arguments, an allocation ID and filename to read from.",
           m_cmd_name.c_str());
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -4781,7 +4769,6 @@
     if (!success) {
       result.AppendErrorWithFormat("invalid allocation id argument '%s'",
                                    id_cstr);
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
diff --git a/lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp b/lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp
--- a/lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp
+++ b/lldb/source/Plugins/Process/MacOSX-Kernel/ProcessKDP.cpp
@@ -910,7 +910,6 @@
       if (!m_command_byte.GetOptionValue().OptionWasSet()) {
         result.AppendError(
             "the --command option must be set to a valid command byte");
-        result.SetStatus(eReturnStatusFailed);
       } else {
         const uint64_t command_byte =
             m_command_byte.GetOptionValue().GetUInt64Value(0);
@@ -933,7 +932,6 @@
                                                "even number of ASCII hex "
                                                "characters: '%s'",
                                                ascii_hex_bytes_cstr);
-                  result.SetStatus(eReturnStatusFailed);
                   return false;
                 }
                 payload_bytes.resize(ascii_hex_bytes_cstr_len / 2);
@@ -943,7 +941,6 @@
                                                "ASCII hex characters (no "
                                                "spaces or hex prefixes): '%s'",
                                                ascii_hex_bytes_cstr);
-                  result.SetStatus(eReturnStatusFailed);
                   return false;
                 }
               }
@@ -970,30 +967,25 @@
                 else
                   result.AppendErrorWithFormat("unknown error 0x%8.8x",
                                                error.GetError());
-                result.SetStatus(eReturnStatusFailed);
                 return false;
               }
             } else {
               result.AppendErrorWithFormat("process must be stopped in order "
                                            "to send KDP packets, state is %s",
                                            StateAsCString(state));
-              result.SetStatus(eReturnStatusFailed);
             }
           } else {
             result.AppendError("invalid process");
-            result.SetStatus(eReturnStatusFailed);
           }
         } else {
           result.AppendErrorWithFormat("invalid command byte 0x%" PRIx64
                                        ", valid values are 1 - 255",
                                        command_byte);
-          result.SetStatus(eReturnStatusFailed);
         }
       }
     } else {
       result.AppendErrorWithFormat("'%s' takes no arguments, only options.",
                                    m_cmd_name.c_str());
-      result.SetStatus(eReturnStatusFailed);
     }
     return false;
   }
diff --git a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
--- a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
@@ -5246,7 +5246,6 @@
                                    "amount to be transferred when "
                                    "reading/writing",
                                    m_cmd_name.c_str());
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -5287,7 +5286,6 @@
       result.AppendErrorWithFormat(
           "'%s' takes a one or more packet content arguments",
           m_cmd_name.c_str());
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
@@ -5337,7 +5335,6 @@
     if (command.empty()) {
       result.AppendErrorWithFormat("'%s' takes a command string argument",
                                    m_cmd_name.c_str());
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
 
diff --git a/lldb/source/Plugins/Process/minidump/ProcessMinidump.cpp b/lldb/source/Plugins/Process/minidump/ProcessMinidump.cpp
--- a/lldb/source/Plugins/Process/minidump/ProcessMinidump.cpp
+++ b/lldb/source/Plugins/Process/minidump/ProcessMinidump.cpp
@@ -880,7 +880,6 @@
     if (argc > 0) {
       result.AppendErrorWithFormat("'%s' take no arguments, only options",
                                    m_cmd_name.c_str());
-      result.SetStatus(eReturnStatusFailed);
       return false;
     }
     SetDefaultOptionsIfNoneAreSet();
diff --git a/lldb/source/Plugins/StructuredData/DarwinLog/StructuredDataDarwinLog.cpp b/lldb/source/Plugins/StructuredData/DarwinLog/StructuredDataDarwinLog.cpp
--- a/lldb/source/Plugins/StructuredData/DarwinLog/StructuredDataDarwinLog.cpp
+++ b/lldb/source/Plugins/StructuredData/DarwinLog/StructuredDataDarwinLog.cpp
@@ -809,7 +809,6 @@
                        StructuredDataDarwinLog::GetStaticPluginName())) {
       result.AppendError("failed to get StructuredDataPlugin for "
                          "the process");
-      result.SetStatus(eReturnStatusFailed);
     }
     StructuredDataDarwinLog &plugin =
         *static_cast<StructuredDataDarwinLog *>(plugin_sp.get());
@@ -833,7 +832,6 @@
     // Report results.
     if (!error.Success()) {
       result.AppendError(error.AsCString());
-      result.SetStatus(eReturnStatusFailed);
       // Our configuration failed, so we're definitely disabled.
       plugin.SetEnabled(false);
     } else {