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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 OSCKit, reference 1.2.1 (2c6b58), with Swift 5.10 for watchOS using Xcode 15.4 on 9 Apr 2025 05:49:33 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme NOT-SUPPORTED -destination generic/platform=watchOS

Build Log

========================================
RunAll
========================================
Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/orchetect/OSCKit.git
Reference: 1.2.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/orchetect/OSCKit
 * tag               1.2.1      -> FETCH_HEAD
HEAD is now at 2c6b582 De-flake unit tests
Cloned https://github.com/orchetect/OSCKit.git
Revision (git rev-parse @):
2c6b5820d8f8e4d4c303493e29b5a089fa4b874a
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/orchetect/OSCKit.git at 1.2.1
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             5.10
Building package at path:  $PWD
https://github.com/orchetect/OSCKit.git
Command line invocation:
    /Applications/Xcode-15.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Fetching from https://github.com/robbiehanson/CocoaAsyncSocket
Fetching from https://github.com/orchetect/SwiftASCII
Fetching from https://github.com/apple/swift-numerics
Creating working copy of package ‘swift-numerics’
Checking out 1.0.3 of package ‘swift-numerics’
Creating working copy of package ‘CocoaAsyncSocket’
Checking out 7.6.5 of package ‘CocoaAsyncSocket’
Creating working copy of package ‘SwiftASCII’
Checking out 1.1.5 of package ‘SwiftASCII’
Resolved source packages:
  SwiftASCII: https://github.com/orchetect/SwiftASCII @ 1.1.5
  CocoaAsyncSocket: https://github.com/robbiehanson/CocoaAsyncSocket @ 7.6.5
  swift-numerics: https://github.com/apple/swift-numerics @ 1.0.3
  OSCKit: /Users/admin/builder/spi-builder-workspace
resolved source packages: SwiftASCII, CocoaAsyncSocket, swift-numerics, OSCKit
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme NOT-SUPPORTED -destination generic/platform=watchOS
Command line invocation:
    /Applications/Xcode-15.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme NOT-SUPPORTED -destination generic/platform=watchOS
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Resolved source packages:
  SwiftASCII: https://github.com/orchetect/SwiftASCII @ 1.1.5
  CocoaAsyncSocket: https://github.com/robbiehanson/CocoaAsyncSocket @ 7.6.5
  OSCKit: /Users/admin/builder/spi-builder-workspace
  swift-numerics: https://github.com/apple/swift-numerics @ 1.0.3
2025-04-09 01:49:29.498 xcodebuild[582:3162] Writing error result bundle to /var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/ResultBundle_2025-09-04_01-49-0029.xcresult
xcodebuild: error: The workspace named "spi-builder-workspace" does not contain a scheme named "NOT-SUPPORTED". The "-list" option can be used to find the names of the schemes in the workspace.
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
Resolved source packages:
  SwiftASCII: https://github.com/orchetect/SwiftASCII @ 1.1.5
  CocoaAsyncSocket: https://github.com/robbiehanson/CocoaAsyncSocket @ 7.6.5
  OSCKit: /Users/admin/builder/spi-builder-workspace
  swift-numerics: https://github.com/apple/swift-numerics @ 1.0.3
resolved source packages: SwiftASCII, CocoaAsyncSocket, OSCKit, swift-numerics
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme NOT-SUPPORTED -destination generic/platform=watchOS
Command line invocation:
    /Applications/Xcode-15.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme NOT-SUPPORTED -destination generic/platform=watchOS
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Resolved source packages:
  CocoaAsyncSocket: https://github.com/robbiehanson/CocoaAsyncSocket @ 7.6.5
  OSCKit: /Users/admin/builder/spi-builder-workspace
  swift-numerics: https://github.com/apple/swift-numerics @ 1.0.3
  SwiftASCII: https://github.com/orchetect/SwiftASCII @ 1.1.5
2025-04-09 01:49:32.222 xcodebuild[600:3327] Writing error result bundle to /var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/ResultBundle_2025-09-04_01-49-0032.xcresult
xcodebuild: error: The workspace named "spi-builder-workspace" does not contain a scheme named "NOT-SUPPORTED". The "-list" option can be used to find the names of the schemes in the workspace.
BUILD FAILURE 5.10 watchOS