From e6aa05077271ec45854b8b16e59addcbcf7367c5 Mon Sep 17 00:00:00 2001
From: Sergey Pepyakin <s.pepyakin@gmail.com>
Date: Tue, 6 Feb 2018 19:01:16 +0300
Subject: [PATCH] Run nightly only if NIGHTLY_TOOLCHAIN is defined

---
 doc.sh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/doc.sh b/doc.sh
index 4c20b7a..5148060 100755
--- a/doc.sh
+++ b/doc.sh
@@ -4,7 +4,11 @@ set -eux
 
 cd $(dirname $0)
 
-rustup run $NIGHTLY_TOOLCHAIN cargo doc
+if [ -s NIGHTLY_TOOLCHAIN ]; then
+	rustup run $NIGHTLY_TOOLCHAIN cargo doc
+else
+	cargo doc
+fi;
 
 # cargo-deadlinks will check any links in docs generated by `cargo doc`.
 # This is useful as rustdoc uses raw links which are error prone.