[arrow] branch master updated: ARROW-2563: [Rust] Poor caching in Travis-CI

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The following commit(s) were added to refs/heads/master by this push:
     new 5a29ab8  ARROW-2563: [Rust] Poor caching in Travis-CI
5a29ab8 is described below

commit 5a29ab8d93ffa3ca2ae40a3b31f99d86882c90bd
Author: Chao Sun <su...@apache.org>
AuthorDate: Mon May 14 22:46:28 2018 +0200

    ARROW-2563: [Rust] Poor caching in Travis-CI
    
    Author: Chao Sun <su...@apache.org>
    
    Closes #2021 from sunchao/arrow-2563 and squashes the following commits:
    
    a65dd84 <Chao Sun> fix merge coverage report issue
    43aa206 <Chao Sun> ARROW-2563:  Poor caching in Travis-CI
---
 .travis.yml | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index e91d7b1..a1b44a8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -196,16 +196,17 @@ matrix:
     before_script:
     - if [ $ARROW_CI_RUST_AFFECTED != "1" ]; then exit; fi
     - pip install 'travis-cargo<0.2' --user && export PATH=$HOME/.local/bin:$PATH
-    - cargo install --force cargo-travis && export PATH=$HOME/.cargo/bin:$PATH
+    - export CARGO_TARGET_DIR=$TRAVIS_BUILD_DIR/target
+    - cargo install cargo-travis || echo "Skipping cargo-travis installation as it already exists in cache"
+    - export PATH=$HOME/.cargo/bin:$PATH
     script:
     - $TRAVIS_BUILD_DIR/ci/travis_script_rust.sh
     after_success:
     - pushd ${TRAVIS_BUILD_DIR}/rust
     # Run coverage for codecov.io
+    - mkdir -p target/kcov
     - RUST_BACKTRACE=1 cargo coverage --verbose
     - bash <(curl -s https://codecov.io/bash) || echo "Codecov did not collect coverage reports"
-    # Run coverage for coveralls.io
-    #- cargo coveralls --verbose
 
 after_failure:
 - COREFILE=$(find . -maxdepth 2 -name "core*" | head -n 1)

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