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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 CZlib with Swift 6.0 for iOS using Xcode 16.2.

Build Command

Build command unavailable

Build Log

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RunAll
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Builder version: 4.58.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/Kitura/CZlib.git
Reference: 0.1.2
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Kitura/CZlib
 * tag               0.1.2      -> FETCH_HEAD
HEAD is now at a781e6e Add Swift 4 support
Cloned https://github.com/Kitura/CZlib.git
Revision (git rev-parse @):
a781e6ef055fb8f0d608fe30a28e6a0f62ae498b
SUCCESS checkout https://github.com/Kitura/CZlib.git at 0.1.2
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Build
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Selected platform:         iOS
Swift version:             6.0
Building package at path:  $PWD
https://github.com/Kitura/CZlib.git
Command line invocation:
    /Applications/Xcode-16.1.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
the Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifierthe Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifier
Resolved source packages:
  spi-builder-workspace: (null)
Resolve Package Graph
the Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifierthe Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifier
2024-11-27 12:34:29.182 xcodebuild[465:2569] Writing error result bundle to /var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/ResultBundle_2024-27-11_12-34-0029.xcresult
xcodebuild: error: Could not resolve package dependencies:
  the Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifier
  the Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifier
GENERIC FAILURE 6.0 iOS