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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 Doubles, reference 1.5.0 (9a56b2), with Swift 6.1 for Linux on 29 Apr 2025 16:00:15 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/mgriebling/Doubles.git
Reference: 1.5.0
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/mgriebling/Doubles
 * tag               1.5.0      -> FETCH_HEAD
HEAD is now at 9a56b24 Updated documentation.
Cloned https://github.com/mgriebling/Doubles.git
Revision (git rev-parse @):
9a56b2425b793d484826dcb2e570f94eaf01b9be
SUCCESS checkout https://github.com/mgriebling/Doubles.git at 1.5.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/mgriebling/Doubles.git
https://github.com/mgriebling/Doubles.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "Doubles",
  "name" : "Doubles",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Doubles",
      "targets" : [
        "Doubles"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DoublesTests",
      "module_type" : "SwiftTarget",
      "name" : "DoublesTests",
      "path" : "Tests/DoublesTests",
      "sources" : [
        "DoublesTests.swift"
      ],
      "target_dependencies" : [
        "Doubles"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Doubles",
      "module_type" : "SwiftTarget",
      "name" : "Doubles",
      "path" : "Sources/Doubles",
      "product_memberships" : [
        "Doubles"
      ],
      "sources" : [
        "Common.swift",
        "DDouble.swift",
        "QDouble.swift",
        "String+Char.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.8"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Fetching https://github.com/apple/swift-docc-plugin
[1/2049] Fetching swift-docc-plugin
Fetched https://github.com/apple/swift-docc-plugin from cache (0.38s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.4.3 (2.20s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit
[1/3376] Fetching swift-docc-symbolkit
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.40s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (0.93s)
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
Creating working copy for https://github.com/apple/swift-docc-plugin
Working copy of https://github.com/apple/swift-docc-plugin resolved at 1.4.3
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/4] Write sources
[3/4] Write swift-version-24593BA9C3E375BF.txt
[5/9] Compiling Doubles QDouble.swift
/host/spi-builder-workspace/Sources/Doubles/QDouble.swift:2:8: error: no such module 'simd'
   1 | import Foundation
   2 | import simd                // vector-based math library
     |        `- error: no such module 'simd'
   3 |
   4 | //  Translated to Swift from an original work called qd-2.3.15
[6/9] Compiling Doubles DDouble.swift
/host/spi-builder-workspace/Sources/Doubles/QDouble.swift:2:8: error: no such module 'simd'
   1 | import Foundation
   2 | import simd                // vector-based math library
     |        `- error: no such module 'simd'
   3 |
   4 | //  Translated to Swift from an original work called qd-2.3.15
[7/9] Compiling Doubles String+Char.swift
/host/spi-builder-workspace/Sources/Doubles/QDouble.swift:2:8: error: no such module 'simd'
   1 | import Foundation
   2 | import simd                // vector-based math library
     |        `- error: no such module 'simd'
   3 |
   4 | //  Translated to Swift from an original work called qd-2.3.15
error: emit-module command failed with exit code 1 (use -v to see invocation)
[8/9] Emitting module Doubles
/host/spi-builder-workspace/Sources/Doubles/QDouble.swift:2:8: error: no such module 'simd'
   1 | import Foundation
   2 | import simd                // vector-based math library
     |        `- error: no such module 'simd'
   3 |
   4 | //  Translated to Swift from an original work called qd-2.3.15
[9/9] Compiling Doubles Common.swift
/host/spi-builder-workspace/Sources/Doubles/QDouble.swift:2:8: error: no such module 'simd'
   1 | import Foundation
   2 | import simd                // vector-based math library
     |        `- error: no such module 'simd'
   3 |
   4 | //  Translated to Swift from an original work called qd-2.3.15
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
[0/1] Planning build
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/3] Write swift-version-24593BA9C3E375BF.txt
[4/8] Compiling Doubles String+Char.swift
/host/spi-builder-workspace/Sources/Doubles/QDouble.swift:2:8: error: no such module 'simd'
   1 | import Foundation
   2 | import simd                // vector-based math library
     |        `- error: no such module 'simd'
   3 |
   4 | //  Translated to Swift from an original work called qd-2.3.15
[5/8] Compiling Doubles Common.swift
/host/spi-builder-workspace/Sources/Doubles/QDouble.swift:2:8: error: no such module 'simd'
   1 | import Foundation
   2 | import simd                // vector-based math library
     |        `- error: no such module 'simd'
   3 |
   4 | //  Translated to Swift from an original work called qd-2.3.15
[6/8] Compiling Doubles DDouble.swift
/host/spi-builder-workspace/Sources/Doubles/QDouble.swift:2:8: error: no such module 'simd'
   1 | import Foundation
   2 | import simd                // vector-based math library
     |        `- error: no such module 'simd'
   3 |
   4 | //  Translated to Swift from an original work called qd-2.3.15
error: emit-module command failed with exit code 1 (use -v to see invocation)
[7/8] Compiling Doubles QDouble.swift
/host/spi-builder-workspace/Sources/Doubles/QDouble.swift:2:8: error: no such module 'simd'
   1 | import Foundation
   2 | import simd                // vector-based math library
     |        `- error: no such module 'simd'
   3 |
   4 | //  Translated to Swift from an original work called qd-2.3.15
[8/8] Emitting module Doubles
/host/spi-builder-workspace/Sources/Doubles/QDouble.swift:2:8: error: no such module 'simd'
   1 | import Foundation
   2 | import simd                // vector-based math library
     |        `- error: no such module 'simd'
   3 |
   4 | //  Translated to Swift from an original work called qd-2.3.15
BUILD FAILURE 6.1 linux