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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 MathLib, reference main (439fa7), with Swift 6.1 for Linux on 26 Apr 2025 19:08:05 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/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: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/forkercat/MathLib.git
Reference: main
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/forkercat/MathLib
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 439fa72 Add length
Cloned https://github.com/forkercat/MathLib.git
Revision (git rev-parse @):
439fa720cd73b285f9109dc12c4d781847e5f502
SUCCESS checkout https://github.com/forkercat/MathLib.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/forkercat/MathLib.git
https://github.com/forkercat/MathLib.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MathLib",
  "name" : "MathLib",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "MathLib",
      "targets" : [
        "MathLib"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "MathLib-Demo",
      "targets" : [
        "MathLib-Demo"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MathLib_Demo",
      "module_type" : "SwiftTarget",
      "name" : "MathLib-Demo",
      "path" : "Sources/MathLib-Demo",
      "product_memberships" : [
        "MathLib-Demo"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "MathLib"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "MathLib",
      "module_type" : "SwiftTarget",
      "name" : "MathLib",
      "path" : "Sources/MathLib",
      "product_memberships" : [
        "MathLib",
        "MathLib-Demo"
      ],
      "sources" : [
        "Constants.swift",
        "Functions.swift",
        "Matrix.swift",
        "Other.swift",
        "Quaternion.swift",
        "Scalar.swift",
        "Vector+Float.swift",
        "Vector+Int.swift",
        "Vector.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.3"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$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
Building for debugging...
[0/7] Write sources
[2/7] Write swift-version-24593BA9C3E375BF.txt
[4/16] Compiling MathLib Other.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[5/17] Compiling MathLib Vector+Int.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[6/17] Compiling MathLib Vector.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
error: emit-module command failed with exit code 1 (use -v to see invocation)
[7/17] Emitting module MathLib
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[8/17] Compiling MathLib Matrix.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[9/17] Compiling MathLib Constants.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[10/17] Compiling MathLib Functions.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[11/17] Compiling MathLib Vector+Float.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[12/17] Compiling MathLib Quaternion.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[13/17] Compiling MathLib Scalar.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/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
Building for debugging...
[0/5] Write swift-version-24593BA9C3E375BF.txt
[2/14] Compiling MathLib Quaternion.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[3/15] Compiling MathLib Other.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[4/15] Compiling MathLib Matrix.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
error: emit-module command failed with exit code 1 (use -v to see invocation)
[5/15] Emitting module MathLib
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[6/15] Compiling MathLib Constants.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[7/15] Compiling MathLib Functions.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[8/15] Compiling MathLib Vector+Int.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[9/15] Compiling MathLib Scalar.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[10/15] Compiling MathLib Vector+Float.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
[11/15] Compiling MathLib Vector.swift
/host/spi-builder-workspace/Sources/MathLib/Functions.swift:8:8: error: no such module 'simd'
  6 | //
  7 |
  8 | import simd
    |        `- error: no such module 'simd'
  9 | import Foundation
 10 |
BUILD FAILURE 6.1 linux