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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 tzf, reference main (a16f92), with Swift 5.10 for watchOS using Xcode 15.4 on 24 Mar 2025 15:08:21 UTC.

Build Command

No build command. This typically means the build failed at an early stage where we determine the build command.

Build Log

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RunAll
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Builder version: 4.60.1
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/ringsaturn/tzf-swift.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/ringsaturn/tzf-swift
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at a16f920 bump tzf-rel
Submodule path 'tzf-rel-lite': checked out 'a123462ad55abe8efe14e3f55b6b17b6ba034086'
Submodule 'tzf-rel-lite' (https://github.com/ringsaturn/tzf-rel-lite) registered for path 'tzf-rel-lite'
Cloning into '/Users/admin/builder/spi-builder-workspace/tzf-rel-lite'...
Cloned https://github.com/ringsaturn/tzf-swift.git
Revision (git rev-parse @):
a16f9202576d8cc81760d223acfc93eb24ba958c
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/ringsaturn/tzf-swift.git at main
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Build
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Selected platform:         watchOS
Swift version:             5.10
Building package at path:  $PWD
https://github.com/ringsaturn/tzf-swift.git
Command line invocation:
    /Applications/Xcode-15.4.0.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
package 'spi-builder-workspace' is using Swift tools version 6.0.0 but the installed version is 5.10.0
Resolved source packages:
  spi-builder-workspace: /Users/admin/builder/spi-builder-workspace
2025-03-24 11:08:18.473 xcodebuild[471:2646] Writing error result bundle to /var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/ResultBundle_2025-24-03_11-08-0018.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'spi-builder-workspace' is using Swift tools version 6.0.0 but the installed version is 5.10.0
Command line invocation:
    /Applications/Xcode-15.4.0.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
package 'spi-builder-workspace' is using Swift tools version 6.0.0 but the installed version is 5.10.0
Resolved source packages:
  spi-builder-workspace: /Users/admin/builder/spi-builder-workspace
2025-03-24 11:08:20.279 xcodebuild[519:2923] Writing error result bundle to /var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/ResultBundle_2025-24-03_11-08-0020.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'spi-builder-workspace' is using Swift tools version 6.0.0 but the installed version is 5.10.0
BUILD FAILURE 5.10 watchOS