tweak CI

don't re-install rustup
faster checks on stable / beta

Author: japaric

.travis.yml

@@ -28,7 +28,6 @@ matrix:
 
 install:
   - sh ci/install.sh
-  - source ~/.cargo/env || true
 
 script:
   - bash ci/script.sh

ci/install.sh

@@ -1,9 +1,6 @@
 set -ex
 
 main() {
-    curl https://sh.rustup.rs -sSf | \
-        sh -s -- -y --default-toolchain $TRAVIS_RUST_VERSION
-
     local target=
     if [ $TRAVIS_OS_NAME = linux ]; then
         target=x86_64-unknown-linux-gnu

ci/script.sh

@@ -9,13 +9,14 @@ test_svd() {
 }
 
 main() {
-    cross build --target $TARGET
-    cross build --target $TARGET --release
+    cross check --target $TARGET
 
     if [ ! -z $DISABLE_TESTS ]; then
         return
     fi
 
+    cross build --target $TARGET --release
+
     case $TRAVIS_OS_NAME in
         linux)
             td=$(mktemp -d)