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-rw-r--r--.travis.yml10
1 files changed, 7 insertions, 3 deletions
diff --git a/.travis.yml b/.travis.yml
index 4b2a1ffd7a..ed805aac31 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,9 +5,10 @@ cache:
## cargo: true
directories:
- $HOME/.cargo
-
-before_cache:
- - rm -rf $HOME/.cargo/registry
+ ## caching CARGO_TARGET_DIR actually slows down the build over time,
+ ## because old build products are never deleted.
+ ## where we point CARGO_TARGET_DIR in all our cargo invocations
+ #- $TRAVIS_BUILD_DIR/src/rust/target
compiler:
- gcc
@@ -217,6 +218,9 @@ after_failure:
before_cache:
## Delete all gcov files.
- if [[ "$COVERAGE_OPTIONS" != "" ]]; then make reset-gcov; fi
+ ## Delete the cargo registry before caching .cargo, because it's cheaper to
+ ## download the registry and throw it away, rather than caching it
+ - rm -rf $HOME/.cargo/registry
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