Travis: Use cargo cache

Closes ticket 26952.

diff --git a/.travis.yml b/.travis.yml
index 25c31c3d2fb736e102e7a91ce554d89c6d8a1b4d..8c2c9e3d61301671eb9da0f992125b3b8e452824 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,11 @@ language: c
 
 cache:
   ccache: true
+  ## cargo: true
+  directories:
+    - $HOME/.cargo
+    ## where we point CARGO_TARGET_DIR in all our cargo invocations
+    - $TRAVIS_BUILD_DIR/src/rust/target
 
 compiler:
   - gcc
@@ -116,6 +121,8 @@ before_install:
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update; fi
   ## We might be upgrading some useless packages, but that's better than missing an upgrade
   - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew upgrade; fi
+  ## Create empty rust directories for non-Rust builds, so caching succeeds
+  - if [[ "$RUST_OPTIONS" == "" ]]; then mkdir -p $HOME/.cargo $TRAVIS_BUILD_DIR/src/rust/target; fi
 
 install:
   ## If we're on OSX use brew to install ccache (ccache is automatically installed on Linux)

diff --git a/changes/ticket26952-cargo b/changes/ticket26952-cargo
new file mode 100644 (file)
index 0000000..e1efdfc
--- /dev/null
+++ b/changes/ticket26952-cargo
@@ -0,0 +1,3 @@
+  o Minor features (continuous integration, rust):
+    - Use cargo cache in our Travis CI configuration.
+      Closes ticket 26952.