This copy of libswiftCore.dylib requires an OS version prior to 12.2.0

Question

The app crashes on launch when running from XCode 10.2 (before and after Swift 5.0 migration) with this on console

This copy of libswiftCore.dylib req

Answer 1

For anybody not using BUCK but still experiencing this issue, try adding /usr/lib/swift in your target's Runtime Search Paths (under Build Settings). Instantly fixed things up for me.