From 601d24810e89efd42f7cd69d4a7ccecd4e35364d Mon Sep 17 00:00:00 2001
From: Eric Huss <eric@huss.org>
Date: Tue, 22 Jun 2021 22:10:25 -0700
Subject: [PATCH] Don't dist miri on stable or beta.

---
 src/bootstrap/dist.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
index 71ed0af4a7c04..e0c33f7357741 100644
--- a/src/bootstrap/dist.rs
+++ b/src/bootstrap/dist.rs
@@ -1171,6 +1171,9 @@ impl Step for Miri {
     }
 
     fn run(self, builder: &Builder<'_>) -> Option<GeneratedTarball> {
+        if !builder.build.unstable_features() {
+            return None;
+        }
         let compiler = self.compiler;
         let target = self.target;
         assert!(builder.config.extended);