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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 WebMIDIKit, reference 1.0.5 (b40e74), with Swift 6.1 for macOS (Xcode) using Xcode 16.3 on 24 Apr 2025 09:16:37 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: 4.61.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/adamnemecek/webmidikit.git
Reference: 1.0.5
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/adamnemecek/webmidikit
 * tag               1.0.5      -> FETCH_HEAD
HEAD is now at b40e74e removing more
Cloned https://github.com/adamnemecek/webmidikit.git
Revision (git rev-parse @):
b40e74e47f34ecba4c4e7c60f9c56f2e208b0031
SUCCESS checkout https://github.com/adamnemecek/webmidikit.git at 1.0.5
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Build
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Selected platform:         macosXcodebuild
Swift version:             6.1
Building package at path:  $PWD
https://github.com/adamnemecek/webmidikit.git
https://github.com/adamnemecek/webmidikit.git
error: 'spi-builder-workspace': package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
error: fatalError
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
Resolved source packages:
  spi-builder-workspace: (null)
2025-04-24 02:16:36.476 xcodebuild[496:2820] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_02-16-0036.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
Resolved source packages:
  spi-builder-workspace: (null)
2025-04-24 02:16:37.175 xcodebuild[505:2920] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_02-16-0037.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'package.swift' is using Swift tools version 3.1.0 which is no longer supported; consider using '// swift-tools-version: 6.1' to specify the current tools version
BUILD FAILURE 6.1 macosXcodebuild