diff --git a/packages/hydrojudge/package.json b/packages/hydrojudge/package.json
index 3df5197eb..85644af3a 100644
--- a/packages/hydrojudge/package.json
+++ b/packages/hydrojudge/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.8.5",
+    "version": "2.8.6",
     "main": "package.json",
     "author": "undefined <i@undefined.moe>",
     "repository": "https://github.com/hydro-dev/Hydro.git",
diff --git a/packages/hydrojudge/src/checkers.ts b/packages/hydrojudge/src/checkers.ts
index ceb6a79d8..f18dcb080 100644
--- a/packages/hydrojudge/src/checkers.ts
+++ b/packages/hydrojudge/src/checkers.ts
@@ -189,7 +189,7 @@ const checkers: Record<string, Checker> = {
             return {
                 status: STATUS.STATUS_SYSTEM_ERROR,
                 score: 0,
-                message: '',
+                message: stderr,
             };
         }
         return parse(stderr, config.score);
diff --git a/packages/hydrojudge/src/judge/interactive.ts b/packages/hydrojudge/src/judge/interactive.ts
index e6b62a087..0d9aa3fec 100644
--- a/packages/hydrojudge/src/judge/interactive.ts
+++ b/packages/hydrojudge/src/judge/interactive.ts
@@ -41,15 +41,16 @@ function judgeCase(c) {
             status = STATUS.STATUS_TIME_LIMIT_EXCEEDED;
         } else if (memory_usage_kb > ctxSubtask.subtask.memory * 1024) {
             status = STATUS.STATUS_MEMORY_LIMIT_EXCEEDED;
-        } else if (code) {
+        } else if (code !== 13/* Broken Pipe */ || (code === 13 && !resInteractor.code)) {
             status = STATUS.STATUS_RUNTIME_ERROR;
             if (code < 32) message = signals[code];
             else message = { message: 'Your program returned {0}.', params: [code] };
         } else {
-            const result = parse(resInteractor.files.stderr, ctx.config.score);
+            const result = parse(resInteractor.stderr, ctxSubtask.subtask.score);
             status = result.status;
             score = result.score;
             message = result.message;
+            if (resInteractor.code) message += ` (Interactor exited with code ${resInteractor.code})`;
         }
         ctxSubtask.score = Score[ctxSubtask.subtask.type](ctxSubtask.score, score);
         ctxSubtask.status = Math.max(ctxSubtask.status, status);
@@ -59,7 +60,7 @@ function judgeCase(c) {
             status: STATUS.STATUS_JUDGING,
             case: {
                 status,
-                score: 0,
+                score,
                 time_ms: time_usage_ms,
                 memory_kb: memory_usage_kb,
                 message,
diff --git a/packages/hydrojudge/src/sandbox.ts b/packages/hydrojudge/src/sandbox.ts
index 1f3c84e0b..4d1c57950 100644
--- a/packages/hydrojudge/src/sandbox.ts
+++ b/packages/hydrojudge/src/sandbox.ts
@@ -68,8 +68,8 @@ async function adaptResult(result, params) {
     ret.fileIds = result.fileIds || {};
     if (params.stdout) await fs.writeFile(params.stdout, ret.files.stdout || '');
     else ret.stdout = ret.files.stdout || '';
-    if (params.stderr) await fs.writeFile(params.stderr, ret.files.stderr || '');
-    else ret.stderr = ret.files.stderr || '';
+    if (params.stderr) await fs.writeFile(params.stderr, ret.files.stderr || result.error || '');
+    else ret.stderr = ret.files.stderr || result.error || '';
     if (result.error) ret.error = result.error;
     return ret;
 }