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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

Successful build of AsyncSequenceReader, reference main (542db2), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 15:17:18 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mochidev/AsyncSequenceReader.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/mochidev/AsyncSequenceReader
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 542db2c Updated readme suggested version
Cloned https://github.com/mochidev/AsyncSequenceReader.git
Revision (git rev-parse @):
542db2cabb0b34f3c8035d58b06510968bca4cf9
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/mochidev/AsyncSequenceReader.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/mochidev/AsyncSequenceReader.git
https://github.com/mochidev/AsyncSequenceReader.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "AsyncSequenceReader",
  "name" : "AsyncSequenceReader",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "AsyncSequenceReader",
      "targets" : [
        "AsyncSequenceReader"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "AsyncSequenceReaderTests",
      "module_type" : "SwiftTarget",
      "name" : "AsyncSequenceReaderTests",
      "path" : "Tests/AsyncSequenceReaderTests",
      "sources" : [
        "AsyncBufferedIteratorTests.swift",
        "AsyncIteratorMapSequenceTests.swift",
        "AsyncReadUpToCountSequenceTests.swift",
        "AsyncReadUpToElementsSequenceTests.swift",
        "AsyncSequenceReaderTests.swift",
        "TestSequence.swift"
      ],
      "target_dependencies" : [
        "AsyncSequenceReader"
      ],
      "type" : "test"
    },
    {
      "c99name" : "AsyncSequenceReader",
      "module_type" : "SwiftTarget",
      "name" : "AsyncSequenceReader",
      "path" : "Sources/AsyncSequenceReader",
      "product_memberships" : [
        "AsyncSequenceReader"
      ],
      "sources" : [
        "AnyReadableSequence.swift",
        "AsyncBufferedIterator.swift",
        "AsyncIteratorMapSequence.swift",
        "AsyncReadSequence.swift",
        "AsyncReadUpToCountSequence.swift",
        "AsyncReadUpToElementsSequence.swift",
        "AsyncSequenceReader.swift",
        "AsyncSequenceReaderError.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/11] Compiling AsyncSequenceReader AsyncSequenceReaderError.swift
[4/11] Compiling AsyncSequenceReader AsyncReadSequence.swift
[5/11] Compiling AsyncSequenceReader AsyncSequenceReader.swift
[6/11] Compiling AsyncSequenceReader AsyncReadUpToCountSequence.swift
[7/11] Compiling AsyncSequenceReader AsyncBufferedIterator.swift
[8/11] Compiling AsyncSequenceReader AsyncIteratorMapSequence.swift
[9/11] Emitting module AsyncSequenceReader
[10/11] Compiling AsyncSequenceReader AsyncReadUpToElementsSequence.swift
[11/11] Compiling AsyncSequenceReader AnyReadableSequence.swift
Build complete! (1.02s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "AsyncSequenceReader",
  "name" : "AsyncSequenceReader",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.15"
    },
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "AsyncSequenceReader",
      "targets" : [
        "AsyncSequenceReader"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "AsyncSequenceReaderTests",
      "module_type" : "SwiftTarget",
      "name" : "AsyncSequenceReaderTests",
      "path" : "Tests/AsyncSequenceReaderTests",
      "sources" : [
        "AsyncBufferedIteratorTests.swift",
        "AsyncIteratorMapSequenceTests.swift",
        "AsyncReadUpToCountSequenceTests.swift",
        "AsyncReadUpToElementsSequenceTests.swift",
        "AsyncSequenceReaderTests.swift",
        "TestSequence.swift"
      ],
      "target_dependencies" : [
        "AsyncSequenceReader"
      ],
      "type" : "test"
    },
    {
      "c99name" : "AsyncSequenceReader",
      "module_type" : "SwiftTarget",
      "name" : "AsyncSequenceReader",
      "path" : "Sources/AsyncSequenceReader",
      "product_memberships" : [
        "AsyncSequenceReader"
      ],
      "sources" : [
        "AnyReadableSequence.swift",
        "AsyncBufferedIterator.swift",
        "AsyncIteratorMapSequence.swift",
        "AsyncReadSequence.swift",
        "AsyncReadUpToCountSequence.swift",
        "AsyncReadUpToElementsSequence.swift",
        "AsyncSequenceReader.swift",
        "AsyncSequenceReaderError.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
Done.