From dcc5797a27d926d2c1337d241c2ce78c3e32c36a Mon Sep 17 00:00:00 2001
From: Sergey Pepyakin <s.pepyakin@gmail.com>
Date: Fri, 26 Jan 2018 18:55:48 +0300
Subject: [PATCH] Fix cargo-deadlinks

---
 .travis.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 376a737..f4761da 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,7 +12,8 @@ addons:
     - g++-6
     - cmake
 install:
-- cargo install cargo-deadlinks
+# Install `cargo-deadlinks` unless it is currently installed.
+- command -v cargo-deadlinks &> /dev/null || cargo install cargo-deadlinks
 script:
 - export CC=/usr/bin/gcc-6
 - export CXX=/usr/bin/g++-6