$ xcodebuild -project SE0295Polyfill.xcodeproj -scheme SE0295Polyfill-Package testTest Case '-[SE0295PolyfillTests.JSONCodingTests test01]' started. generate: Command-SE0295.gen.swift 2021-06-07 11:57:01.005930+0900 swiftc[78065:15248887] Failed to open macho file at /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc for reading: Too many levels of symbolic links Test Case '-[SE0295PolyfillTests.JSONCodingTests test01]' passed (2.926 seconds).