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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 Flock, reference master (d61e7f), with Swift 6.1 for macOS (SPM) on 24 Apr 2025 10:11:21 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/jakeheis/flock.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/jakeheis/flock
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at d61e7fd Update README
Cloned https://github.com/jakeheis/flock.git
Revision (git rev-parse @):
d61e7fd3ef4f731382fca192976682953784be13
SUCCESS checkout https://github.com/jakeheis/flock.git at master
Fetching https://github.com/onevcat/Rainbow
Fetching https://github.com/jpsim/Yams.git from cache
Fetching https://github.com/norio-nomura/Clang_C.git
Fetching https://github.com/jakeheis/SwiftCLI
Fetching https://github.com/Quick/Nimble.git
Fetching https://github.com/jakeheis/CSSH
Fetching https://github.com/jpsim/SourceKitten
[1/26] Fetching cssh
[27/66] Fetching cssh, clang_c
[56/5140] Fetching cssh, clang_c, swiftcli
[310/6336] Fetching cssh, clang_c, swiftcli, rainbow
[2989/25903] Fetching cssh, clang_c, swiftcli, rainbow, nimble
[3014/42015] Fetching cssh, clang_c, swiftcli, rainbow, nimble, sourcekitten
Fetched https://github.com/onevcat/Rainbow from cache (0.96s)
Fetched https://github.com/jpsim/Yams.git from cache (0.96s)
[2809/40819] Fetching cssh, clang_c, swiftcli, nimble, sourcekitten
Fetching https://github.com/jakeheis/Shout
Fetching https://github.com/drmohundro/SWXMLHash.git
Fetched https://github.com/jakeheis/SwiftCLI from cache (1.13s)
Fetched https://github.com/jakeheis/CSSH from cache (1.13s)
[4875/35719] Fetching clang_c, nimble, sourcekitten
Fetching https://github.com/Carthage/Commandant.git
Fetching https://github.com/norio-nomura/SourceKit.git
[31611/36453] Fetching clang_c, nimble, sourcekitten, shout
[32143/39273] Fetching clang_c, nimble, sourcekitten, shout, swxmlhash
Fetched https://github.com/jakeheis/Shout from cache (0.68s)
[34384/38539] Fetching clang_c, nimble, sourcekitten, swxmlhash
Fetching https://github.com/antitypical/Result.git
[36651/38553] Fetching clang_c, nimble, sourcekitten, swxmlhash, sourcekit
[36919/40882] Fetching clang_c, nimble, sourcekitten, swxmlhash, sourcekit, commandant
Fetched https://github.com/norio-nomura/SourceKit.git from cache (0.59s)
Fetching https://github.com/kylef/PathKit.git
[37119/40868] Fetching clang_c, nimble, sourcekitten, swxmlhash, commandant
Fetched https://github.com/Quick/Nimble.git from cache (1.87s)
[20184/21301] Fetching clang_c, sourcekitten, swxmlhash, commandant
Fetched https://github.com/jpsim/SourceKitten from cache (1.87s)
[4118/5189] Fetching clang_c, swxmlhash, commandant
Fetched https://github.com/norio-nomura/Clang_C.git from cache (1.87s)
[4101/5149] Fetching swxmlhash, commandant
Fetching https://github.com/IBM-Swift/BlueSocket
Fetching https://github.com/kylef/Spectre.git
Fetching https://github.com/yonaskolb/Beak
Fetched https://github.com/drmohundro/SWXMLHash.git from cache (0.92s)
Fetching https://github.com/Quick/Quick.git
Fetched https://github.com/Carthage/Commandant.git from cache (0.78s)
[1/2533] Fetching result
[381/3944] Fetching result, pathkit
[3184/4965] Fetching result, pathkit, spectre
Fetched https://github.com/antitypical/Result.git from cache (0.80s)
[828/2432] Fetching pathkit, spectre
[1435/7558] Fetching pathkit, spectre, beak
[1679/10500] Fetching pathkit, spectre, beak, bluesocket
Fetched https://github.com/kylef/PathKit.git from cache (0.76s)
[436/9089] Fetching spectre, beak, bluesocket
[4079/23844] Fetching spectre, beak, bluesocket, quick
Fetched https://github.com/IBM-Swift/BlueSocket from cache (0.97s)
[2336/20902] Fetching spectre, beak, quick
Fetched https://github.com/Quick/Quick.git from cache (1.46s)
[2713/6147] Fetching spectre, beak
Fetched https://github.com/yonaskolb/Beak from cache (16.82s)
Computing version for https://github.com/jakeheis/SwiftCLI
Fetched https://github.com/kylef/Spectre.git from cache (16.82s)
Computed https://github.com/jakeheis/SwiftCLI at 5.1.2 (19.34s)
Computing version for https://github.com/jakeheis/Shout
Computed https://github.com/jakeheis/Shout at 0.4.3 (0.59s)
Computing version for https://github.com/onevcat/Rainbow
Computed https://github.com/onevcat/Rainbow at 3.1.4 (0.58s)
Computing version for https://github.com/yonaskolb/Beak
Computed https://github.com/yonaskolb/Beak at 0.4.0 (0.58s)
Computing version for https://github.com/jakeheis/CSSH
Computed https://github.com/jakeheis/CSSH at 1.0.3 (0.58s)
Computing version for https://github.com/IBM-Swift/BlueSocket
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/jakeheis/flock.git
https://github.com/jakeheis/flock.git
{
  "dependencies" : [
    {
      "identity" : "beak",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.4.0",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/yonaskolb/Beak"
    },
    {
      "identity" : "rainbow",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "3.0.0",
            "upper_bound" : "4.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/onevcat/Rainbow"
    },
    {
      "identity" : "shout",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.2.3",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/jakeheis/Shout"
    },
    {
      "identity" : "swiftcli",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "5.1.1",
            "upper_bound" : "6.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/jakeheis/SwiftCLI"
    }
  ],
  "manifest_display_name" : "Flock",
  "name" : "Flock",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "flock",
      "targets" : [
        "FlockCLI"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "FlockKit",
      "targets" : [
        "FlockKit"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "FlockKit",
      "module_type" : "SwiftTarget",
      "name" : "FlockKit",
      "path" : "Sources/FlockKit",
      "product_dependencies" : [
        "Rainbow",
        "Shout"
      ],
      "product_memberships" : [
        "FlockKit"
      ],
      "sources" : [
        "Environment.swift",
        "Flock.swift",
        "Server.swift",
        "TaskError.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "FlockCLI",
      "module_type" : "SwiftTarget",
      "name" : "FlockCLI",
      "path" : "Sources/FlockCLI",
      "product_dependencies" : [
        "BeakCore",
        "Rainbow",
        "SwiftCLI"
      ],
      "product_memberships" : [
        "flock"
      ],
      "sources" : [
        "Beak.swift",
        "CheckCommand.swift",
        "CleanCommand.swift",
        "FlockCommand.swift",
        "FlockError.swift",
        "ForwardCommand.swift",
        "HelpMessageGenerator.swift",
        "InitCommand.swift",
        "ListCommand.swift",
        "Router.swift",
        "main.swift"
      ],
      "type" : "executable"
    }
  ],
  "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
Updating https://github.com/onevcat/Rainbow
Updating https://github.com/jakeheis/SwiftCLI
Updating https://github.com/yonaskolb/Beak
Updating https://github.com/jakeheis/Shout
Updated https://github.com/jakeheis/SwiftCLI (0.47s)
Updated https://github.com/jakeheis/Shout (0.47s)
Updated https://github.com/onevcat/Rainbow (0.47s)
Updated https://github.com/yonaskolb/Beak (0.47s)
Computing version for https://github.com/yonaskolb/Beak
Computed https://github.com/yonaskolb/Beak at 0.5.1 (1.18s)
Updating https://github.com/jpsim/SourceKitten
Updating https://github.com/kylef/PathKit.git
Updating https://github.com/kylef/Spectre.git
Updated https://github.com/kylef/PathKit.git (0.43s)
Updated https://github.com/kylef/Spectre.git (0.52s)
Updated https://github.com/jpsim/SourceKitten (0.60s)
Computing version for https://github.com/kylef/PathKit.git
Computed https://github.com/kylef/PathKit.git at 0.9.2 (3.48s)
Computing version for https://github.com/kylef/Spectre.git
Computed https://github.com/kylef/Spectre.git at 0.9.2 (0.59s)
Computing version for https://github.com/jakeheis/SwiftCLI
Computed https://github.com/jakeheis/SwiftCLI at 5.3.3 (0.57s)
Computing version for https://github.com/onevcat/Rainbow
Computed https://github.com/onevcat/Rainbow at 3.2.0 (0.55s)
Computing version for https://github.com/jakeheis/Shout
Computed https://github.com/jakeheis/Shout at 0.5.7 (0.60s)
Updating https://github.com/IBM-Swift/BlueSocket
Updated https://github.com/IBM-Swift/BlueSocket (0.53s)
Computing version for https://github.com/IBM-Swift/BlueSocket
Computed https://github.com/IBM-Swift/BlueSocket at 1.0.200 (1.18s)
Computing version for https://github.com/jpsim/SourceKitten
Computed https://github.com/jpsim/SourceKitten at 0.37.0 (0.59s)
Fetching https://github.com/apple/swift-argument-parser.git from cache
Updating https://github.com/jpsim/Yams.git
Updating https://github.com/drmohundro/SWXMLHash.git
Updated https://github.com/jpsim/Yams.git (0.56s)
Updated https://github.com/drmohundro/SWXMLHash.git (0.56s)
Fetched https://github.com/apple/swift-argument-parser.git from cache (0.62s)
Computing version for https://github.com/drmohundro/SWXMLHash.git
Computed https://github.com/drmohundro/SWXMLHash.git at 7.0.2 (1.24s)
Computing version for https://github.com/apple/swift-argument-parser.git
Computed https://github.com/apple/swift-argument-parser.git at 1.5.0 (0.47s)
Computing version for https://github.com/jpsim/Yams.git
Computed https://github.com/jpsim/Yams.git at 5.3.1 (0.57s)
Creating working copy for https://github.com/kylef/PathKit.git
Working copy of https://github.com/kylef/PathKit.git resolved at 0.9.2
Creating working copy for https://github.com/yonaskolb/Beak
Working copy of https://github.com/yonaskolb/Beak resolved at 0.5.1
Creating working copy for https://github.com/jpsim/SourceKitten
Working copy of https://github.com/jpsim/SourceKitten resolved at 0.37.0
Creating working copy for https://github.com/jakeheis/Shout
Working copy of https://github.com/jakeheis/Shout resolved at 0.5.7
Creating working copy for https://github.com/IBM-Swift/BlueSocket
Working copy of https://github.com/IBM-Swift/BlueSocket resolved at 1.0.200
Creating working copy for https://github.com/apple/swift-argument-parser.git
Working copy of https://github.com/apple/swift-argument-parser.git resolved at 1.5.0
Creating working copy for https://github.com/drmohundro/SWXMLHash.git
Working copy of https://github.com/drmohundro/SWXMLHash.git resolved at 7.0.2
Creating working copy for https://github.com/onevcat/Rainbow
Working copy of https://github.com/onevcat/Rainbow resolved at 3.2.0
Creating working copy for https://github.com/kylef/Spectre.git
Working copy of https://github.com/kylef/Spectre.git resolved at 0.9.2
Creating working copy for https://github.com/jpsim/Yams.git
Working copy of https://github.com/jpsim/Yams.git resolved at 5.3.1
Creating working copy for https://github.com/jakeheis/SwiftCLI
Working copy of https://github.com/jakeheis/SwiftCLI resolved at 5.3.3
error: the library 'BeakCore' requires macos 10.13, but depends on the product 'SourceKittenFramework' which requires macos 12.0; consider changing the library 'BeakCore' to require macos 12.0 or later, or the product 'SourceKittenFramework' to require macos 10.13 or earlier.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
error: the library 'BeakCore' requires macos 10.13, but depends on the product 'SourceKittenFramework' which requires macos 12.0; consider changing the library 'BeakCore' to require macos 12.0 or later, or the product 'SourceKittenFramework' to require macos 10.13 or earlier.
BUILD FAILURE 6.1 macosSpm