Carthage update failed at v1.1.1

[Kuniwak]

$ carthage update --platform ios --cache-builds
*** Fetching MirrorDiffKit
*** Fetching RxSwift
*** Fetching Result
*** Fetching PromiseKit
*** Fetching R.swift.Library
*** Checking out Result at "3.2.4"
*** Checking out R.swift.Library at "v4.0.0"
*** Checking out PromiseKit at "4.4.2"
*** Checking out MirrorDiffKit at "1.1.1"
*** Checking out RxSwift at "4.0.0-rc.0"
*** xcodebuild output can be found in /var/folders/6f/mg2l7cm5017fntt7cx8g7tz8stjw_c/T/carthage-xcodebuild.cZqUDA.log
*** Invalid cache found for MirrorDiffKit, rebuilding with all downstream dependencies
*** Invalid cache found for PromiseKit, rebuilding with all downstream dependencies
*** Invalid cache found for R.swift.Library, rebuilding with all downstream dependencies
*** Invalid cache found for Result, rebuilding with all downstream dependencies
*** Invalid cache found for RxSwift, rebuilding with all downstream dependencies
*** Building scheme "MirrorDiffKit-iOS" in MirrorDiffKit.xcodeproj
Build Failed
        Task failed with exit code 65:
        /usr/bin/xcrun xcodebuild -project /Users/Kuniwak/Development/TestableDesignExample/Carthage/Checkouts/MirrorDiffKit/MirrorDiffKit.xcodeproj -scheme MirrorDiffKit-iOS -configuration Release -derivedDataPath /Users/Kuniwak/Library/Caches/org.carthage.CarthageKit/DerivedData/8.3.3_8E3004b/MirrorDiffKit/1.1.1 -sdk iphoneos ONLY_ACTIVE_ARCH=NO BITCODE_GENERATION_MODE=bitcode CODE_SIGNING_REQUIRED=NO CODE_SIGN_IDENTITY= CARTHAGE=YES archive -archivePath ./ GCC_INSTRUMENT_PROGRAM_FLOW_ARCS=NO CLANG_ENABLE_CODE_COVERAGE=NO (launched in /Users/Kuniwak/Development/TestableDesignExample/Carthage/Checkouts/MirrorDiffKit)

$ /usr/bin/xcrun xcodebuild -project /Users/Kuniwak/Development/TestableDesignExample/Carthage/Checkouts/MirrorDiffKit/MirrorDiffKit.xcodeproj -scheme MirrorDiffKit-iOS -configuration Release -derivedDataPath /Users/Kuniwak/Library/Caches/org.carthage.CarthageKit/DerivedData/8.3.3_8E3004b/MirrorDiffKit/1.1.1 -sdk iphoneos ONLY_ACTIVE_ARCH=NO BITCODE_GENERATION_MODE=bitcode CODE_SIGNING_REQUIRED=NO CODE_SIGN_IDENTITY= CARTHAGE=YES archive -archivePath ./ GCC_INSTRUMENT_PROGRAM_FLOW_ARCS=NO CLANG_ENABLE_CODE_COVERAGE=NO
User defaults from command line:
    IDEArchivePathOverride = /Users/Kuniwak/Development/TestableDesignExample
    IDEDerivedDataPathOverride = /Users/Kuniwak/Library/Caches/org.carthage.CarthageKit/DerivedData/8.3.3_8E3004b/MirrorDiffKit/1.1.1

Build settings from command line:
    BITCODE_GENERATION_MODE = bitcode
    CARTHAGE = YES
    CLANG_ENABLE_CODE_COVERAGE = NO
    CODE_SIGN_IDENTITY =
    CODE_SIGNING_REQUIRED = NO
    GCC_INSTRUMENT_PROGRAM_FLOW_ARCS = NO
    ONLY_ACTIVE_ARCH = NO
    SDKROOT = iphoneos10.3

Build Preparation
Build task concurrency set to 4 via user default IDEBuildOperationMaxNumberOfConcurrentCompileTasks

=== BUILD TARGET MirrorDiffKit-iOS OF PROJECT MirrorDiffKit WITH CONFIGURATION Release ===

Check dependencies
“Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift. Use the [Edit > Convert > To Current SwiftSyntax…] menu to choose a Swift version or use the Build Settings editor to configure the build setting directly.
“Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift. Use the [Edit > Convert > To Current SwiftSyntax…] menu to choose a Swift version or use the Build Settings editor to configure the build setting directly.
warning: no umbrella header found for target 'MirrorDiffKit-iOS', module map will not be generated

** ARCHIVE FAILED **


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

[Kuniwak]

This is a problem caused by xcode-select.
I changed Xcode version to 9.0 and this issue was resolved.