I've got this error from xcodebuild

set -o pipefail && xcodebuild CODE_SIGNING_REQUIRED=NO CODE_SIGN_IDENTITY= PROVISIONING_PROFILE= -sdk iphonesimulator -destination ‘platform=iOS Simulator,OS=9.0,name=iPhone 6’ -workspace Playground.xcworkspace -scheme “Playground” clean build test | tee $CIRCLE_ARTIFACTS/xcode_raw.log | xcpretty --color --report junit --output $CIRCLE_TEST_REPORTS/xcode/results.xml

after I run this command, there is an error and it’s caused failing test.

2016-04-21 21:04:23.181 xcodebuild[882:9235] [MT] DVTSDK: Skipped SDK /Applications/Xcode-7.3.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.1.sdk; its version (7.1) is below required minimum (9.3) for the iphonesimulator platform.
2016-04-21 21:04:23.184 xcodebuild[882:9235] [MT] DVTSDK: Skipped SDK /Applications/Xcode-7.3.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator8.4.sdk; its version (8.4) is below required minimum (9.3) for the iphonesimulator platform.
2016-04-21 21:04:23.184 xcodebuild[882:9235] [MT] DVTSDK: Skipped SDK /Applications/Xcode-7.3.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.0.sdk; its version (9.0) is below required minimum (9.3) for the iphonesimulator platform.
2016-04-21 21:04:23.185 xcodebuild[882:9235] [MT] DVTSDK: Skipped SDK /Applications/Xcode-7.3.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.1.sdk; its version (9.1) is below required minimum (9.3) for the iphonesimulator platform.
2016-04-21 21:04:23.187 xcodebuild[882:9235] [MT] DVTSDK: Skipped SDK /Applications/Xcode-7.3.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.2.sdk; its version (9.2) is below required minimum (9.3) for the iphonesimulator platform.
2016-04-21 21:04:23.782 xcodebuild[882:9242] Failed to locate a valid instance of CoreSimulatorService in the bootstrap. Adding it now.

I don’t how to fix it. Has anyone know ?
Thanks in advance.

@macbaszii What is the actual error? Nothing you’ve posted is an issue or error.

@mattyohe No any clue for this. It is run to “Testing” step. The message is “Touching [ProjectName].xctest” and FAILED without any error message.