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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 SLTools, reference master (9dffa6), with Swift 6.1 for macOS (SPM) on 25 Apr 2025 18:01:16 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/shial4/sltools.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/shial4/sltools
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 9dffa6e Update to Kitura 2.0
Cloned https://github.com/shial4/sltools.git
Revision (git rev-parse @):
9dffa6e33d2d32d3517c683fc408d630141c5c5e
SUCCESS checkout https://github.com/shial4/sltools.git at master
Fetching https://github.com/IBM-Swift/BlueSocket.git
Fetching https://github.com/IBM-Swift/Kitura.git
Fetching https://github.com/IBM-Swift/KituraContracts.git
Fetching https://github.com/IBM-Swift/CCurl.git
Fetching https://github.com/IBM-Swift/CommonCrypto.git
Fetching https://github.com/IBM-Swift/BlueSSLService.git
Fetching https://github.com/IBM-Swift/BlueCryptor.git
[1/2077] Fetching bluesslservice
[22/2109] Fetching bluesslservice, commoncrypto
[57/2293] Fetching bluesslservice, commoncrypto, ccurl
Fetched https://github.com/IBM-Swift/CommonCrypto.git from cache (0.72s)
[268/2261] Fetching bluesslservice, ccurl
[663/3915] Fetching bluesslservice, ccurl, bluecryptor
[987/6857] Fetching bluesslservice, ccurl, bluecryptor, bluesocket
Fetching https://github.com/IBM-Swift/LoggerAPI.git
Fetched https://github.com/IBM-Swift/CCurl.git from cache (0.74s)
[833/9219] Fetching bluesslservice, bluecryptor, bluesocket, kituracontracts
Fetching https://github.com/IBM-Swift/Kitura-TemplateEngine.git
[4050/26128] Fetching bluesslservice, bluecryptor, bluesocket, kituracontracts, kitura
Fetched https://github.com/IBM-Swift/BlueSSLService.git from cache (0.92s)
Fetching https://github.com/IBM-Swift/Kitura-net.git
Fetched https://github.com/IBM-Swift/BlueCryptor.git from cache (0.94s)
[1385/22397] Fetching bluesocket, kituracontracts, kitura
Fetched https://github.com/IBM-Swift/BlueSocket.git from cache (1.17s)
[2701/19455] Fetching kituracontracts, kitura
[4962/20226] Fetching kituracontracts, kitura, loggerapi
[8110/20664] Fetching kituracontracts, kitura, loggerapi, kitura-templateengine
Fetched https://github.com/IBM-Swift/KituraContracts.git from cache (1.42s)
[10910/18118] Fetching kitura, loggerapi, kitura-templateengine
Fetched https://github.com/IBM-Swift/Kitura-TemplateEngine.git from cache (0.85s)
[17473/27224] Fetching kitura, loggerapi, kitura-net
Fetched https://github.com/IBM-Swift/LoggerAPI.git from cache (0.94s)
[17387/26453] Fetching kitura, kitura-net
Fetched https://github.com/IBM-Swift/Kitura.git from cache (1.71s)
Computing version for https://github.com/IBM-Swift/BlueCryptor.git
[859/9544] Fetching kitura-net
Fetched https://github.com/IBM-Swift/Kitura-net.git from cache (1.35s)
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/shial4/sltools.git
https://github.com/shial4/sltools.git
{
  "dependencies" : [
    {
      "identity" : "kitura",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "2.0.0",
            "upper_bound" : "3.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/IBM-Swift/Kitura.git"
    },
    {
      "identity" : "bluecryptor",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "0.8.18",
            "upper_bound" : "1.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/IBM-Swift/BlueCryptor.git"
    }
  ],
  "manifest_display_name" : "SLTools",
  "name" : "SLTools",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SLTools",
      "targets" : [
        "SLTools"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SLToolsTests",
      "module_type" : "SwiftTarget",
      "name" : "SLToolsTests",
      "path" : "Tests/SLToolsTests",
      "sources" : [
        "SLToolsTests.swift"
      ],
      "target_dependencies" : [
        "SLTools"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SLTools",
      "module_type" : "SwiftTarget",
      "name" : "SLTools",
      "path" : "Sources/SLTools",
      "product_dependencies" : [
        "Kitura",
        "Cryptor"
      ],
      "product_memberships" : [
        "SLTools"
      ],
      "sources" : [
        "SLAuthenticator.swift",
        "SLCryptography.swift",
        "SLRouteController.swift",
        "SLValidator.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
Updating https://github.com/IBM-Swift/BlueCryptor.git
Updating https://github.com/IBM-Swift/Kitura.git
Updated https://github.com/IBM-Swift/BlueCryptor.git (0.51s)
Updated https://github.com/IBM-Swift/Kitura.git (0.51s)
Computing version for https://github.com/IBM-Swift/BlueCryptor.git
error: the Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifier
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
Updating https://github.com/IBM-Swift/Kitura.git
Updating https://github.com/IBM-Swift/BlueCryptor.git
Updated https://github.com/IBM-Swift/BlueCryptor.git (0.57s)
Updated https://github.com/IBM-Swift/Kitura.git (0.57s)
Computing version for https://github.com/IBM-Swift/BlueCryptor.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 FAILURE 6.1 macosSpm