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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 JailbreakDetector, reference 1.0.0 (c0c30a), with Swift 6.1 for macOS (SPM) on 26 Apr 2025 20:24:59 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/conmulligan/JailbreakDetector.swift.git
Reference: 1.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/conmulligan/JailbreakDetector.swift
 * tag               1.0.0      -> FETCH_HEAD
HEAD is now at c0c30a0 Update workflow to use `xcodebuild`
Cloned https://github.com/conmulligan/JailbreakDetector.swift.git
Revision (git rev-parse @):
c0c30a0c944397cf8b7fa2b13226a6f5ce519dad
SUCCESS checkout https://github.com/conmulligan/JailbreakDetector.swift.git at 1.0.0
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "jailbreakdetector.swift",
      "name": "JailbreakDetector",
      "url": "https://github.com/conmulligan/JailbreakDetector.swift.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/JailbreakDetector.swift",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/conmulligan/JailbreakDetector.swift.git
[2/128] Fetching jailbreakdetector.swift
Fetched https://github.com/conmulligan/JailbreakDetector.swift.git from cache (0.64s)
Creating working copy for https://github.com/conmulligan/JailbreakDetector.swift.git
Working copy of https://github.com/conmulligan/JailbreakDetector.swift.git resolved at 1.0.0 (c0c30a0)
warning: '.resolve-product-dependencies': dependency 'jailbreakdetector.swift' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/conmulligan/JailbreakDetector.swift.git
https://github.com/conmulligan/JailbreakDetector.swift.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "JailbreakDetector",
  "name" : "JailbreakDetector",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "10.0"
    }
  ],
  "products" : [
    {
      "name" : "JailbreakDetector",
      "targets" : [
        "JailbreakDetector"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "JailbreakDetectorTests",
      "module_type" : "SwiftTarget",
      "name" : "JailbreakDetectorTests",
      "path" : "Tests/JailbreakDetectorTests",
      "sources" : [
        "JailbreakDetectorTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "JailbreakDetector"
      ],
      "type" : "test"
    },
    {
      "c99name" : "JailbreakDetector",
      "module_type" : "SwiftTarget",
      "name" : "JailbreakDetector",
      "path" : "Sources/JailbreakDetector",
      "product_memberships" : [
        "JailbreakDetector"
      ],
      "sources" : [
        "JailbreakDetector.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/4] Emitting module JailbreakDetector
/Users/admin/builder/spi-builder-workspace/Sources/JailbreakDetector/JailbreakDetector.swift:26:8: error: no such module 'UIKit'
 24 |
 25 | import Foundation
 26 | import UIKit
    |        `- error: no such module 'UIKit'
 27 | import OSLog
 28 |
[4/4] Compiling JailbreakDetector JailbreakDetector.swift
/Users/admin/builder/spi-builder-workspace/Sources/JailbreakDetector/JailbreakDetector.swift:26:8: error: no such module 'UIKit'
 24 |
 25 | import Foundation
 26 | import UIKit
    |        `- error: no such module 'UIKit'
 27 | import OSLog
 28 |
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-2F0A5646E1D333AE.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[2/3] Emitting module JailbreakDetector
/Users/admin/builder/spi-builder-workspace/Sources/JailbreakDetector/JailbreakDetector.swift:26:8: error: no such module 'UIKit'
 24 |
 25 | import Foundation
 26 | import UIKit
    |        `- error: no such module 'UIKit'
 27 | import OSLog
 28 |
[3/3] Compiling JailbreakDetector JailbreakDetector.swift
/Users/admin/builder/spi-builder-workspace/Sources/JailbreakDetector/JailbreakDetector.swift:26:8: error: no such module 'UIKit'
 24 |
 25 | import Foundation
 26 | import UIKit
    |        `- error: no such module 'UIKit'
 27 | import OSLog
 28 |
BUILD FAILURE 6.1 macosSpm