fix TSamFailedOnly and the output formatting for the mocha-runner

lua/test-samurai/core.lua

@@ -395,12 +395,6 @@ local function run_command(command, opts)
     if not results then
       return
     end
-    local lines = format_results(results)
-    if #lines == 0 then
-      return
-    end
-    ensure_output_started()
-    append_lines(buf, lines)
     had_parsed_output = true
     if options.track_scope then
       if results.failures_all ~= nil then
@@ -409,6 +403,12 @@ local function run_command(command, opts)
         state.last_scope_failures = results.failures
       end
     end
+    local lines = format_results(results)
+    if #lines == 0 then
+      return
+    end
+    ensure_output_started()
+    append_lines(buf, lines)
   end
 
   run_cmd(cmd, cwd, {