From 483c1a83ca7cf53fd8f3432edb32cbe70ba39d45 Mon Sep 17 00:00:00 2001
From: Mark Rousskov <mark.simulacrum@gmail.com>
Date: Tue, 29 Dec 2020 15:18:40 -0500
Subject: [PATCH] Permit unstable features during PGO benchmarks

---
 src/ci/pgo.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/ci/pgo.sh b/src/ci/pgo.sh
index 13b8ca91f890f..10f2cd825fafe 100755
--- a/src/ci/pgo.sh
+++ b/src/ci/pgo.sh
@@ -2,6 +2,8 @@
 
 set -euxo pipefail
 
+export RUSTC_BOOTSTRAP=1
+
 rm -rf /tmp/rustc-pgo
 
 python2.7 ../x.py build --target=$PGO_HOST --host=$PGO_HOST \