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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 MightFail, reference main (72b474), with Swift 6.1 for Linux on 1 May 2025 00:06:11 UTC.

Swift 6 data race errors: 0

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 -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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/might-fail/swift-might-fail.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/might-fail/swift-might-fail
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 72b4743 update docs
Cloned https://github.com/might-fail/swift-might-fail.git
Revision (git rev-parse @):
72b4743466199c8ac662567f31058c13e6eb37d2
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/might-fail/swift-might-fail.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/might-fail/swift-might-fail.git
https://github.com/might-fail/swift-might-fail.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MightFail",
  "name" : "MightFail",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "MightFail",
      "targets" : [
        "MightFail"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MightFailTests",
      "module_type" : "SwiftTarget",
      "name" : "MightFailTests",
      "path" : "Tests/MightFailTests",
      "sources" : [
        "MightFailTests.swift",
        "VendingMachine.swift"
      ],
      "target_dependencies" : [
        "MightFail"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MightFail",
      "module_type" : "SwiftTarget",
      "name" : "MightFail",
      "path" : "Sources/MightFail",
      "product_memberships" : [
        "MightFail"
      ],
      "sources" : [
        "Maybe.swift",
        "MightFail.swift",
        "NotAnError.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$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...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/6] Compiling MightFail NotAnError.swift
[4/6] Compiling MightFail MightFail.swift
[5/6] Compiling MightFail Maybe.swift
[6/6] Emitting module MightFail
Build complete! (3.95s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "MightFail",
  "name" : "MightFail",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "MightFail",
      "targets" : [
        "MightFail"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MightFailTests",
      "module_type" : "SwiftTarget",
      "name" : "MightFailTests",
      "path" : "Tests/MightFailTests",
      "sources" : [
        "MightFailTests.swift",
        "VendingMachine.swift"
      ],
      "target_dependencies" : [
        "MightFail"
      ],
      "type" : "test"
    },
    {
      "c99name" : "MightFail",
      "module_type" : "SwiftTarget",
      "name" : "MightFail",
      "path" : "Sources/MightFail",
      "product_memberships" : [
        "MightFail"
      ],
      "sources" : [
        "Maybe.swift",
        "MightFail.swift",
        "NotAnError.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
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
Done.