From 67ab7ee59ac4be6ebed2adfb97f5dc9da89e76db Mon Sep 17 00:00:00 2001
From: Paul Woolcock <paul@woolcock.us>
Date: Mon, 27 Aug 2018 13:14:42 -0400
Subject: [PATCH] try caching $HOME/.cargo

try to see if we can avoid building cargo-tarpaulin every time
---
 .travis.yml | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index f6ec8cd..cf0f604 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,9 @@ addons:
   apt:
     packages:
       - libssl-dev
+cache:
+  directories:
+  - $HOME/.cargo
 env:
   - ELEFREN_FEATURES="--features toml"
   - ELEFREN_FEATURES="--features all"
@@ -25,7 +28,9 @@ script:
   - cargo test $ELEFREN_FEATURES
 after_success: |
   if [[ "$TRAVIS_RUST_VERSION" == stable ]] 2> /dev/null && [ -z "$ELEFREN_FEATURES" ] 2>/dev/null && [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
-    RUSTFLAGS="--cfg procmacro2_semver_exempt" cargo install cargo-tarpaulin
+    if [[ -z "$(which cargo-tarpaulin)" ]]; then
+        RUSTFLAGS="--cfg procmacro2_semver_exempt" cargo install cargo-tarpaulin
+    fi
     cargo tarpaulin --ciserver travis-ci --coveralls $TRAVIS_JOB_ID --features toml
   fi
 matrix: