Build failed by carthage

[BackWorld]

Xcode 7.3.1 & carthage 0.18

*** Building scheme "HexColor" in HexColor.xcodeproj
** CLEAN FAILED **


The following build commands failed:
    Check dependencies
(1 failure)
** BUILD FAILED **


The following build commands failed:
    Check dependencies
(1 failure)
A shell task (/usr/bin/xcrun xcodebuild -project /Users/zhuxuhong/Desktop/CarthageDemo/CarthageDemo/Carthage/Checkouts/HexColor/HexColor.xcodeproj -scheme HexColor -configuration Release -sdk iphoneos ONLY_ACTIVE_ARCH=NO BITCODE_GENERATION_MODE=bitcode CODE_SIGNING_REQUIRED=NO CODE_SIGN_IDENTITY= CARTHAGE=YES clean build) failed with exit code 65:
** CLEAN FAILED **