Fix CI by specifying valid, specific simulators

Author: mdiep

.travis.yml

@@ -25,8 +25,7 @@ matrix:
       env:
         - XCODE_SDK=iphonesimulator
         - XCODE_ACTION="build-for-testing test-without-building"
-        - XCODE_DESTINATION="platform=iOS Simulator,id=31E6604A-19AA-4B68-B560-C33C584BC80D" # iPhone 6s, iOS 10.2
-#        - XCODE_DESTINATION="platform=iOS Simulator,name=iPhone 6s,OS=10.2"
+        - XCODE_DESTINATION="platform=iOS Simulator,name=iPhone 6s,OS=10.2"
 #        - XCODE_PLAYGROUND_TARGET="x86_64-apple-ios9.3"
 #        - PLAYGROUND="ReactiveCocoa-iOS.playground"
     - xcode_scheme: ReactiveCocoa-tvOS
@@ -40,7 +39,7 @@ matrix:
       env:
         - XCODE_SDK=watchsimulator
         - XCODE_ACTION=build
-        - XCODE_DESTINATION="platform=watchOS Simulator,name=Apple Watch - 38mm"
+        - XCODE_DESTINATION="platform=watchOS Simulator,name=Apple Watch - 38mm,OS=3.2"
     - script:
         - carthage build --no-skip-current --platform mac
       env: