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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 SwiftCron, reference 0.2.0 (5efa3b), with Swift 6.1 for macOS (SPM) on 25 Apr 2025 00:26:31 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 -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/rymcol/swiftcron.git
Reference: 0.2.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/rymcol/swiftcron
 * tag               0.2.0      -> FETCH_HEAD
HEAD is now at 5efa3b2 Merge pull request #2 from rymcol/swift-4
Cloned https://github.com/rymcol/swiftcron.git
Revision (git rev-parse @):
5efa3b2a52274fdb670d9ac739c9ee3b3a8c1618
SUCCESS checkout https://github.com/rymcol/swiftcron.git at 0.2.0
Fetching https://github.com/PerfectlySoft/Perfect-Thread.git
[1/379] Fetching perfect-thread
Fetched https://github.com/PerfectlySoft/Perfect-Thread.git from cache (0.81s)
Computing version for https://github.com/PerfectlySoft/Perfect-Thread.git
error: the Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifier
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/rymcol/swiftcron.git
https://github.com/rymcol/swiftcron.git
{
  "dependencies" : [
    {
      "identity" : "perfect-thread",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "3.0.2",
            "upper_bound" : "3.1.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/PerfectlySoft/Perfect-Thread.git"
    }
  ],
  "manifest_display_name" : "SwiftCron",
  "name" : "SwiftCron",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftCron",
      "targets" : [
        "SwiftCron"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftCronTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftCronTests",
      "path" : "Tests/Swift-CronTests",
      "product_dependencies" : [
        "PerfectThread"
      ],
      "sources" : [
        "Swift_CronTests.swift"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftCron",
      "module_type" : "SwiftTarget",
      "name" : "SwiftCron",
      "path" : "Sources/SwiftCron",
      "product_dependencies" : [
        "PerfectThread"
      ],
      "product_memberships" : [
        "SwiftCron"
      ],
      "sources" : [
        "Cron.swift",
        "CronJob.swift",
        "CronStorage.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
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 -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/3] Write sources
[2/3] Write swift-version-2F0A5646E1D333AE.txt
[4/7] Emitting module PerfectThread
[5/7] Compiling PerfectThread ThreadQueue.swift
[6/7] Compiling PerfectThread Promise.swift
[7/7] Compiling PerfectThread Threading.swift
[8/11] Compiling SwiftCron CronJob.swift
[9/11] Compiling SwiftCron CronStorage.swift
[10/11] Emitting module SwiftCron
[11/11] Compiling SwiftCron Cron.swift
Build complete! (5.71s)
Updating https://github.com/PerfectlySoft/Perfect-Thread.git
Updated https://github.com/PerfectlySoft/Perfect-Thread.git (0.47s)
Computing version for https://github.com/PerfectlySoft/Perfect-Thread.git
Computed https://github.com/PerfectlySoft/Perfect-Thread.git at 3.0.7 (1.08s)
Creating working copy for https://github.com/PerfectlySoft/Perfect-Thread.git
Working copy of https://github.com/PerfectlySoft/Perfect-Thread.git resolved at 3.0.7
Build complete.
{
  "dependencies" : [
    {
      "identity" : "perfect-thread",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "3.0.2",
            "upper_bound" : "3.1.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/PerfectlySoft/Perfect-Thread.git"
    }
  ],
  "manifest_display_name" : "SwiftCron",
  "name" : "SwiftCron",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftCron",
      "targets" : [
        "SwiftCron"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftCronTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftCronTests",
      "path" : "Tests/Swift-CronTests",
      "product_dependencies" : [
        "PerfectThread"
      ],
      "sources" : [
        "Swift_CronTests.swift"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftCron",
      "module_type" : "SwiftTarget",
      "name" : "SwiftCron",
      "path" : "Sources/SwiftCron",
      "product_dependencies" : [
        "PerfectThread"
      ],
      "product_memberships" : [
        "SwiftCron"
      ],
      "sources" : [
        "Cron.swift",
        "CronJob.swift",
        "CronStorage.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Done.