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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build Fastis with Swift 5.10 for macOS (SPM).

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.33.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/simla-tech/Fastis.git
Reference: 3.2.0
Initialized empty Git repository in /Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/simla-tech/Fastis
 * tag               3.2.0      -> FETCH_HEAD
HEAD is now at 1f33807 Bump version to 3.2.0
Cloned https://github.com/simla-tech/Fastis.git
Revision (git rev-parse @):
1f33807dea8152665415e2ecc78b432eedf59ba6
SUCCESS checkout https://github.com/simla-tech/Fastis.git at 3.2.0
Fetching https://github.com/patchthecode/JTAppleCalendar from cache
Fetching https://github.com/simla-tech/PrettyCards from cache
Fetched https://github.com/patchthecode/JTAppleCalendar from cache (0.16s)
Fetched https://github.com/simla-tech/PrettyCards from cache (0.16s)
Computing version for https://github.com/patchthecode/JTAppleCalendar
Computed https://github.com/patchthecode/JTAppleCalendar at 8.0.5 (0.01s)
Computing version for https://github.com/simla-tech/PrettyCards
Computed https://github.com/simla-tech/PrettyCards at 1.0.7 (0.01s)
Creating working copy for https://github.com/simla-tech/PrettyCards
Working copy of https://github.com/simla-tech/PrettyCards resolved at 1.0.7
Creating working copy for https://github.com/patchthecode/JTAppleCalendar
Working copy of https://github.com/patchthecode/JTAppleCalendar resolved at 8.0.5
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "fastis",
      "name": "Fastis",
      "url": "https://github.com/simla-tech/Fastis.git",
      "version": "unspecified",
      "path": "/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Fastis",
      "dependencies": [
        {
          "identity": "jtapplecalendar",
          "name": "JTAppleCalendar",
          "url": "https://github.com/patchthecode/JTAppleCalendar",
          "version": "8.0.5",
          "path": "/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/JTAppleCalendar",
          "dependencies": [
          ]
        },
        {
          "identity": "prettycards",
          "name": "PrettyCards",
          "url": "https://github.com/simla-tech/PrettyCards",
          "version": "1.0.7",
          "path": "/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/PrettyCards",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/simla-tech/Fastis.git from cache
Fetched https://github.com/simla-tech/Fastis.git from cache (0.14s)
Fetching https://github.com/simla-tech/PrettyCards from cache
Fetching https://github.com/patchthecode/JTAppleCalendar from cache
Fetched https://github.com/simla-tech/PrettyCards from cache (0.17s)
Fetched https://github.com/patchthecode/JTAppleCalendar from cache (0.17s)
Computing version for https://github.com/patchthecode/JTAppleCalendar
Computed https://github.com/patchthecode/JTAppleCalendar at 8.0.5 (0.01s)
Computing version for https://github.com/simla-tech/PrettyCards
Computed https://github.com/simla-tech/PrettyCards at 1.0.7 (0.01s)
Creating working copy for https://github.com/patchthecode/JTAppleCalendar
Working copy of https://github.com/patchthecode/JTAppleCalendar resolved at 8.0.5
Creating working copy for https://github.com/simla-tech/Fastis.git
Working copy of https://github.com/simla-tech/Fastis.git resolved at 3.2.0 (1f33807)
Creating working copy for https://github.com/simla-tech/PrettyCards
Working copy of https://github.com/simla-tech/PrettyCards resolved at 1.0.7
warning: '.resolve-product-dependencies': dependency 'fastis' is not used by any target
Found 2 product dependencies
  - JTAppleCalendar
  - PrettyCards
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $workDir
https://github.com/simla-tech/Fastis.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun swift build --arch arm64
Building for debugging...
[0/4] Write sources
[3/4] Write swift-version-6044DDE57671499D.txt
[5/30] Compiling PrettyCards Shadow.swift
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/PrettyCards/Source/Animation.swift:9:8: error: no such module 'UIKit'
import UIKit
       ^
error: emit-module command failed with exit code 1 (use -v to see invocation)
[6/30] Emitting module PrettyCards
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/PrettyCards/Source/Animation.swift:9:8: error: no such module 'UIKit'
import UIKit
       ^
[7/30] Compiling PrettyCards Animation.swift
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/PrettyCards/Source/Animation.swift:9:8: error: no such module 'UIKit'
import UIKit
       ^
[8/30] Compiling PrettyCards Card.swift
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/PrettyCards/Source/Animation.swift:9:8: error: no such module 'UIKit'
import UIKit
       ^
error: fatalError
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/JTAppleCalendar/Sources/JTAppleCalendar/CalendarEnums.swift:25:8: error: no such module 'UIKit'
import UIKit
       ^
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-6044DDE57671499D.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[2/27] Emitting module PrettyCards
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/PrettyCards/Source/Animation.swift:9:8: error: no such module 'UIKit'
import UIKit
       ^
[3/27] Compiling PrettyCards Shadow.swift
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/PrettyCards/Source/Animation.swift:9:8: error: no such module 'UIKit'
import UIKit
       ^
[4/27] Compiling PrettyCards Card.swift
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/PrettyCards/Source/Animation.swift:9:8: error: no such module 'UIKit'
import UIKit
       ^
[5/27] Compiling PrettyCards Animation.swift
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/PrettyCards/Source/Animation.swift:9:8: error: no such module 'UIKit'
import UIKit
       ^
error: fatalError
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/JTAppleCalendar/Sources/JTAppleCalendar/CalendarEnums.swift:25:8: error: no such module 'UIKit'
import UIKit
       ^
BUILD FAILURE 5.10 macosSpm