出现的警告：

[!] The `ColorInHeartUITests [Debug]` target overrides the `ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES` build setting defined in `Pods/Target Support Files/Pods-ColorInHeart-ColorInHeartUITests/Pods-ColorInHeart-ColorInHeartUITests.debug.xcconfig'. This can lead to problems with the CocoaPods installation

    - Use the `$(inherited)` flag, or

    - Remove the build settings from the target.

[!] The `ColorInHeartUITests [Release]` target overrides the `ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES` build setting defined in `Pods/Target Support Files/Pods-ColorInHeart-ColorInHeartUITests/Pods-ColorInHeart-ColorInHeartUITests.release.xcconfig'. This can lead to problems with the CocoaPods installation

    - Use the `$(inherited)` flag, or

    - Remove the build settings from the target.

解决方法：

直接设为 NO 是不行的，需要按照给出的方案来。

由警告可以看出警告在 “ColorInHeartUITests”，其次，每个警告的后两行给出的是解决方案。

这里采用的是方案一，即添加 “$(inherited)” flag。