From 189c02672f788af1582ca91ddffbbb8f7d68f1be Mon Sep 17 00:00:00 2001
From: Steven Fackler <sfackler@gmail.com>
Date: Mon, 6 Dec 2021 19:15:55 -0500
Subject: [PATCH] cancel redundant builds

---
 .github/workflows/ci.yml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dab07e5cb..c1db55cfe 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,6 +12,10 @@ env:
   RUSTFLAGS: -Dwarnings
   RUST_BACKTRACE: 1
 
+concurrency:
+  group: ${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   rustfmt:
     name: rustfmt
-- 
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