Fail if any command in pipeline fails

Author: ps2

.travis.yml

@@ -7,7 +7,7 @@ before_script:
 #     - carthage bootstrap
 script:
     # Build the app target
-    - xcodebuild -project Loop.xcodeproj -scheme Loop build CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO | xcpretty
+    - set -o pipefail && xcodebuild -project Loop.xcodeproj -scheme Loop build CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO | xcpretty
     # Run the test target
-    - xcodebuild -project Loop.xcodeproj -scheme LoopTests -destination 'name=iPhone SE' test | xcpretty
-    - xcodebuild -project Loop.xcodeproj -scheme DoseMathTests -destination 'name=iPhone SE' test | xcpretty
+    - set -o pipefail && xcodebuild -project Loop.xcodeproj -scheme LoopTests -destination 'name=iPhone SE' test | xcpretty
+    - set -o pipefail && xcodebuild -project Loop.xcodeproj -scheme DoseMathTests -destination 'name=iPhone SE' test | xcpretty