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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 Attributed, reference main (5651f9), with Swift 6.0 for macOS (SPM) on 28 Nov 2024 17:36:43 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.1.0.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

Build Log

========================================
RunAll
========================================
Builder version: 4.58.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Nirma/Attributed.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Nirma/Attributed
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 5651f91 Merge pull request #74 from Nirma/feature/modernization
Cloned https://github.com/Nirma/Attributed.git
Revision (git rev-parse @):
5651f91fb7dfb189dd611b18f47a1069b4b35bcf
SUCCESS checkout https://github.com/Nirma/Attributed.git at main
========================================
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": "attributed",
      "name": "Attributed",
      "url": "https://github.com/Nirma/Attributed.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Attributed",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/Nirma/Attributed.git
[1/576] Fetching attributed
Fetched https://github.com/Nirma/Attributed.git from cache (0.82s)
Creating working copy for https://github.com/Nirma/Attributed.git
Working copy of https://github.com/Nirma/Attributed.git resolved at main (5651f91)
warning: '.resolve-product-dependencies': dependency 'attributed' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/Nirma/Attributed.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.1.0.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--7754E27361AE5C74.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/8] Emitting module Attributed
/Users/admin/builder/spi-builder-workspace/Attributed/Attributed.swift:25:8: error: no such module 'UIKit'
23 |
24 | import Foundation
25 | import UIKit
   |        `- error: no such module 'UIKit'
26 |
27 | /**
[4/8] Compiling Attributed Attributed.swift
/Users/admin/builder/spi-builder-workspace/Attributed/Attributed.swift:25:8: error: no such module 'UIKit'
23 |
24 | import Foundation
25 | import UIKit
   |        `- error: no such module 'UIKit'
26 |
27 | /**
[5/8] Compiling Attributed NSString+Attributed.swift
/Users/admin/builder/spi-builder-workspace/Attributed/Attributed.swift:25:8: error: no such module 'UIKit'
23 |
24 | import Foundation
25 | import UIKit
   |        `- error: no such module 'UIKit'
26 |
27 | /**
[6/8] Compiling Attributed Operators.swift
/Users/admin/builder/spi-builder-workspace/Attributed/Attributed.swift:25:8: error: no such module 'UIKit'
23 |
24 | import Foundation
25 | import UIKit
   |        `- error: no such module 'UIKit'
26 |
27 | /**
[7/8] Compiling Attributed Attributes.swift
/Users/admin/builder/spi-builder-workspace/Attributed/Attributed.swift:25:8: error: no such module 'UIKit'
23 |
24 | import Foundation
25 | import UIKit
   |        `- error: no such module 'UIKit'
26 |
27 | /**
[8/8] Compiling Attributed String+Attributed.swift
/Users/admin/builder/spi-builder-workspace/Attributed/Attributed.swift:25:8: error: no such module 'UIKit'
23 |
24 | import Foundation
25 | import UIKit
   |        `- error: no such module 'UIKit'
26 |
27 | /**
BUILD FAILURE 6.0 macosSpm