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  1. Apache Arrow
  2. ARROW-2563

[Rust] Poor caching in Travis-CI

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      Description

      Since the Rust project isn't at the repo root, Travis-CI won't compiled cache artifacts by default. This leads to long CI times as all packages get recompiled (see https://docs.travis-ci.com/user/caching/#Rust-Cargo-cache for what gets cached).

      In https://travis-ci.org/pitrou/arrow/jobs/376859806 I tried the following:

      export CARGO_TARGET_DIR=$TRAVIS_BUILD_DIR/target
      

      and after a first run, the build time went down to 2 minutes (from 15-18 minutes).

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              • Assignee:
                csun Chao Sun
                Reporter:
                apitrou Antoine Pitrou
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                  Time Spent - 3h 20m
                  3h 20m