GH-56 Add workaround for duplicated watchOS sims on travis

.travis.yml

@@ -4,6 +4,7 @@ osx_image: xcode8.3
 
 before_install:
     - gem install xcpretty -N --no-ri --no-rdoc
+    - xcrun simctl delete 38C891AB-EC79-43E4-9311-6FDEB12DCF11 || true # https://github.com/travis-ci/travis-ci/issues/7580
 
 env:
   global:
@@ -21,17 +22,17 @@ env:
   - WATCHOS_SDK=watchsimulator3.2
 
   matrix:
-      #- SCHEME="$IOS_SCHEME" SDK="$IOS_SDK" DESTINATION="OS=8.1,name=iPhone 6"
-      #- SCHEME="$IOS_SCHEME" SDK="$IOS_SDK" DESTINATION="OS=9.3,name=iPhone 6s"
-      #- SCHEME="$IOS_SCHEME" SDK="$IOS_SDK" DESTINATION="OS=10.3,name=iPhone 7"
+      - SCHEME="$IOS_SCHEME" SDK="$IOS_SDK" DESTINATION="OS=8.1,name=iPhone 6"
+      - SCHEME="$IOS_SCHEME" SDK="$IOS_SDK" DESTINATION="OS=9.3,name=iPhone 6s"
+      - SCHEME="$IOS_SCHEME" SDK="$IOS_SDK" DESTINATION="OS=10.3,name=iPhone 7"
 
-      #- SCHEME="$MACOS_SCHEME" SDK="$MACOS_SDK" DESTINATION="arch=x86_64"
+      - SCHEME="$MACOS_SCHEME" SDK="$MACOS_SDK" DESTINATION="arch=x86_64"
 
-      #- SCHEME="$TVOS_SCHEME" SDK="$TVOS_SDK" DESTINATION="OS=9.0,name=Apple TV 1080p" RUN_TESTS="NO"
-      #- SCHEME="$TVOS_SCHEME" SDK="$TVOS_SDK" DESTINATION="OS=10.0,name=Apple TV 1080p" RUN_TESTS="NO"
+      - SCHEME="$TVOS_SCHEME" SDK="$TVOS_SDK" DESTINATION="OS=9.0,name=Apple TV 1080p" RUN_TESTS="NO"
+      - SCHEME="$TVOS_SCHEME" SDK="$TVOS_SDK" DESTINATION="OS=10.0,name=Apple TV 1080p" RUN_TESTS="NO"
 
-      #- SCHEME="$WATCHOS_SCHEME" SDK="$WATCHOS_SDK" DESTINATION="OS=2.0,name=Apple Watch - 38mm" RUN_TESTS="NO"
-      - SCHEME="$WATCHOS_SCHEME" SDK="$WATCHOS_SDK" DESTINATION="OS=3.2,name=Apple Watch Series 2 - 38mm" RUN_TESTS="NO"
+      - SCHEME="$WATCHOS_SCHEME" SDK="$WATCHOS_SDK" DESTINATION="OS=2.0,name=Apple Watch - 38mm" RUN_TESTS="NO"
+      - SCHEME="$WATCHOS_SCHEME" SDK="$WATCHOS_SDK" DESTINATION="OS=3.2,name=Apple Watch - 38mm" RUN_TESTS="NO"
 
 script:
     - set -o pipefail