fix && to exit subshell with -e on failure

scripts/node/install.sh

@@ -17,11 +17,16 @@ if [ ! -d ~/.nvm ]; then
     git clone https://github.com/creationix/nvm.git ~/.nvm
 fi
 
-pushd ~/.nvm && git fetch && git checkout `git describe --abbrev=0 --tags` && popd
+pushd ~/.nvm
+git fetch
+git checkout `git describe --abbrev=0 --tags`
+popd
+
 source ~/.nvm/nvm.sh
 
 mapbox_time $NODE_VERSION \
 nvm install $NODE_VERSION
+
 nvm alias default $NODE_VERSION
 
 node --version

scripts/node/run.sh

@@ -17,8 +17,10 @@ nvm use $NODE_VERSION
 mapbox_time "checkout_styles" \
 git submodule update --init styles
 
+pushd platform/node
 mapbox_time "compile_program" \
-pushd platform/node && npm install --build-from-source && popd
+npm install --build-from-source
+popd
 
 ################################################################################
 # Test
@@ -29,11 +31,13 @@ if [[ ${TRAVIS_OS_NAME} == "linux" ]]; then
     mapbox_time "checkout_test_suite" \
     git submodule update --init test/suite
 
+    pushd platform/node
     mapbox_time "run_tests" \
-    pushd platform/node && npm test && popd
+    npm test
 
     mapbox_time "run_render_tests" \
-    pushd platform/node && npm run test-suite && popd
+    npm run test-suite
+    popd
 
     if [ ! -z "${AWS_ACCESS_KEY_ID}" ] && [ ! -z "${AWS_SECRET_ACCESS_KEY}" ] ; then
       # Install and add awscli to PATH for uploading the results
@@ -41,7 +45,9 @@ if [[ ${TRAVIS_OS_NAME} == "linux" ]]; then
         pip install --user awscli
         export PATH="`python -m site --user-base`/bin:${PATH}"
 
+        pushd test/suite
         mapbox_time "deploy_results" \
-        pushd test/suite && ./bin/deploy_results.sh && popd
+        ./bin/deploy_results.sh
+        popd
     fi
 fi