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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 ConfettiKit, reference 1.0.0 (bfa65b), with Swift 6.0 (beta) for macOS (SPM) on 16 Sep 2024 21:05:56 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.0.0-Release.Candidate.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
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Builder version: 4.53.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/simonbs/ConfettiKit.git
Reference: 1.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/simonbs/ConfettiKit
 * tag               1.0.0      -> FETCH_HEAD
HEAD is now at bfa65b1 Create LICENSE
Cloned https://github.com/simonbs/ConfettiKit.git
Revision (git rev-parse @):
bfa65b166c70a6ac3f71fd71fa017ad1332a5b06
SUCCESS checkout https://github.com/simonbs/ConfettiKit.git at 1.0.0
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/simonbs/ConfettiKit.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.0.0-Release.Candidate.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-117DEE11B69C53C9.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/9] Emitting module ConfettiKit
/Users/admin/builder/spi-builder-workspace/Sources/ConfettiKit/ConfettiView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class ConfettiView: UIView {
[4/9] Compiling ConfettiKit ConfettiLayerView.swift
/Users/admin/builder/spi-builder-workspace/Sources/ConfettiKit/ConfettiView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class ConfettiView: UIView {
[5/9] Compiling ConfettiKit EmitterBehavior.swift
/Users/admin/builder/spi-builder-workspace/Sources/ConfettiKit/ConfettiView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class ConfettiView: UIView {
[6/9] Compiling ConfettiKit ConfettiShotView.swift
/Users/admin/builder/spi-builder-workspace/Sources/ConfettiKit/ConfettiView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class ConfettiView: UIView {
[7/9] Compiling ConfettiKit ConfettiView.swift
/Users/admin/builder/spi-builder-workspace/Sources/ConfettiKit/ConfettiView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class ConfettiView: UIView {
[8/9] Compiling ConfettiKit ConfettiMode.swift
/Users/admin/builder/spi-builder-workspace/Sources/ConfettiKit/ConfettiView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class ConfettiView: UIView {
[9/9] Compiling ConfettiKit Shooting.swift
/Users/admin/builder/spi-builder-workspace/Sources/ConfettiKit/ConfettiView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class ConfettiView: UIView {
BUILD FAILURE 6.0 macosSpm