ios - Carthage のセットアップがコード 65 で失敗する

Question

新しいマシンに carthage をインストールしています。

$ brew install Carthage

[in project root] $ emacs Cartfile

# Alamofire
github "Alamofire/Alamofire"

# SwifyJSON
github "SwiftyJSON/SwiftyJSON"

$ carthage update

*** Fetching SwiftyJSON
*** Fetching Alamofire
*** Checking out Alamofire at "1.2.3"
*** Checking out SwiftyJSON at "2.2.0"
*** xcodebuild output can be found in /var/folders/8n/044rh7_j6nlcdtsb3cgp_snc0000gn/T/carthage-xcodebuild.log
*** Building scheme "Alamofire iOS" in Alamofire.xcworkspace
A shell task failed with exit code 65:
** BUILD FAILED **


The following build commands failed:
    CompileSwift normal x86_64 [project root]/Carthage/Checkouts/Alamofire/Source/Request.swift
    CompileSwift normal x86_64 [project root]/Carthage/Checkouts/Alamofire/Source/ResponseSerialization.swift
    CompileSwift normal x86_64 [project root]/Carthage/Checkouts/Alamofire/Source/Manager.swift
    CompileSwift normal x86_64 [project root]/Carthage/Checkouts/Alamofire/Source/Alamofire.swift
    CompileSwift normal x86_64 [project root]/Carthage/Checkouts/Alamofire/Source/Validation.swift
    CompileSwiftSources normal x86_64 com.apple.xcode.tools.swift.compiler

(6回失敗)