/Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2016-02-08-a.xctoolchain/usr/bin/swiftc --driver-mode=swift -I /Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2016-02-08-a.xctoolchain/usr/lib/swift/pm -L /Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2016-02-08-a.xctoolchain/usr/lib/swift/pm -lPackageDescription -target x86_64-apple-macosx10.10 /Users/USER/Developer/swiftweb/Clones/FontBlaster/Package.swift
swift-build: error: Your source structure is not supported due to invalid sources layout: /Users/USER/Developer/swiftweb/Clones/FontBlaster. There should be no source files under: /Users/USER/Developer/swiftweb/Clones/FontBlaster.