diff --git a/worker/runner.go b/worker/runner.go
index c65a1d6..742764f 100644
--- a/worker/runner.go
+++ b/worker/runner.go
@@ -42,9 +42,6 @@ func (jc *JudgeRunner) Judge(sub types.Submission, ctx context.Context, announce
 			return &types.FinalResult{Verdict: types.FinalCompileError, CompilerOutput: compOut}
 		}
 		fv, p, e := jc.Run(rt, sub, announce, outPath, callback, ctx)
-		if e != nil {
-
-		}
 		return &types.FinalResult{
 			Verdict:        fv,
 			CompilerOutput: compOut,
diff --git a/worker/worker.go b/worker/worker.go
index ba751d0..77e713a 100644
--- a/worker/worker.go
+++ b/worker/worker.go
@@ -136,13 +136,15 @@ func (w *JudgeWorker) Judge(r *_runner, sub types.Submission) {
 	r.currentSubmission.Store(sub.ID)
 	// TODO: immediately halt runner when getting error
 	judge := r.Judge(sub, r.ctx, func(caseId uint16) bool {
-		return prod.Report(types.ResultAnnouncement, caseId) != nil
+		return prod.Report(types.ResultAnnouncement, caseId) == nil
 	}, func(r types.CaseResult) bool {
 		return prod.Report(types.ResultCase, r) == nil
 	})
 	finalResult := judge()
-	// replace actual new line characters with \\n to avoid shattered payloads when serializing response with msgpack
-	finalResult.CompilerOutput = strings.ReplaceAll(finalResult.CompilerOutput, "\n", "\\n")
+	if finalResult != nil {
+		// replace actual new line characters with \\n to avoid shattered payloads when serializing response with msgpack
+		finalResult.CompilerOutput = strings.ReplaceAll(finalResult.CompilerOutput, "\n", "\\n")
+	}
 	prod.Report(types.ResultFinal, finalResult)
 }