It took quite a sequence of topics to understand this issue. To boil it down, Swift 5 binaries built with Xcode 10.2 require the Swift 5 Runtime Support for Command Line Tools, which are not included in macOS < 10.14.4 (must be directly downloaded from More Downloads in Apple Developer). As of 11 da…

Latest Xcode image (10.2) has drawbacks with the image OS (10.14.3)

drazisil April 15, 2019, 9:43pm 4

Keeping discussion to one thread: Xcode 10.2 image released

Topic		Replies	Views
Xcode 10.2 image released Announcements ios , macos	23	8108	May 20, 2019
When is Xcode 10.2 support coming up? Build Environment xcode	12	4127	April 15, 2019
Xcode 10.2 support (Coomand line tools) Mobile xcodebuild	5	1951	April 15, 2019
Xcode 10.0 GM Image Released Announcements build-image , ios , xcode , macos	25	7434	November 17, 2018
Xcode 10 image has old version of Mac OS, certain command line tools fail Build Environment ios	2	4739	December 21, 2018