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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 skip-keychain, reference main (6789e9), with Swift 6.0 for Linux on 5 Apr 2025 21:17:06 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/skiptools/skip-keychain.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/skiptools/skip-keychain
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 6789e91
Cloned https://github.com/skiptools/skip-keychain.git
Revision (git rev-parse @):
6789e9171d2fee8f2932e9685d94bd8daf6eb7fc
SUCCESS checkout https://github.com/skiptools/skip-keychain.git at main
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $PWD
https://github.com/skiptools/skip-keychain.git
https://github.com/skiptools/skip-keychain.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "default_localization" : "en",
  "dependencies" : [
    {
      "identity" : "skip",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.2.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://source.skip.tools/skip.git"
    },
    {
      "identity" : "skip-foundation",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.2.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://source.skip.tools/skip-foundation.git"
    }
  ],
  "manifest_display_name" : "skip-keychain",
  "name" : "skip-keychain",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    },
    {
      "name" : "macos",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "16.0"
    },
    {
      "name" : "watchos",
      "version" : "9.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "16.0"
    }
  ],
  "products" : [
    {
      "name" : "SkipKeychain",
      "targets" : [
        "SkipKeychain"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SkipKeychainTests",
      "module_type" : "SwiftTarget",
      "name" : "SkipKeychainTests",
      "path" : "Tests/SkipKeychainTests",
      "product_dependencies" : [
        "SkipTest",
        "skipstone"
      ],
      "sources" : [
        "SkipKeychainTests.swift",
        "XCSkipTests.swift"
      ],
      "target_dependencies" : [
        "SkipKeychain"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SkipKeychain",
      "module_type" : "SwiftTarget",
      "name" : "SkipKeychain",
      "path" : "Sources/SkipKeychain",
      "product_dependencies" : [
        "SkipFoundation",
        "skipstone"
      ],
      "product_memberships" : [
        "SkipKeychain"
      ],
      "sources" : [
        "SkipKeychain.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-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-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:9029076bb687edc160a3d5201c89e92dd9fa7309f33f090c4234365c83366c31
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
Fetching https://source.skip.tools/skip-foundation.git
Fetching https://source.skip.tools/skip.git
[1/3094] Fetching skip-foundation
Fetched https://source.skip.tools/skip-foundation.git from cache (0.63s)
[1/7635] Fetching skip
Fetched https://source.skip.tools/skip.git from cache (5.35s)
Computing version for https://source.skip.tools/skip-foundation.git
Computed https://source.skip.tools/skip-foundation.git at 1.3.3 (0.47s)
Fetching https://source.skip.tools/skip-lib.git
[1/1410] Fetching skip-lib
Fetched https://source.skip.tools/skip-lib.git from cache (0.69s)
Computing version for https://source.skip.tools/skip-lib.git
Computed https://source.skip.tools/skip-lib.git at 1.3.4 (0.46s)
Fetching https://source.skip.tools/skip-unit.git
[1/853] Fetching skip-unit
Fetched https://source.skip.tools/skip-unit.git from cache (0.51s)
Computing version for https://source.skip.tools/skip-unit.git
Computed https://source.skip.tools/skip-unit.git at 1.1.2 (0.47s)
Computing version for https://source.skip.tools/skip.git
Computed https://source.skip.tools/skip.git at 1.4.1 (0.61s)
Creating working copy for https://source.skip.tools/skip-foundation.git
Working copy of https://source.skip.tools/skip-foundation.git resolved at 1.3.3
Creating working copy for https://source.skip.tools/skip-lib.git
Working copy of https://source.skip.tools/skip-lib.git resolved at 1.3.4
Creating working copy for https://source.skip.tools/skip.git
Working copy of https://source.skip.tools/skip.git resolved at 1.4.1
Creating working copy for https://source.skip.tools/skip-unit.git
Working copy of https://source.skip.tools/skip-unit.git resolved at 1.1.2
[1369/15895513] Downloading https://source.skip.tools/skip/releases/download/1.4.1/skip.zip
Downloading binary artifact https://source.skip.tools/skip/releases/download/1.4.1/skip.zip
Downloaded https://source.skip.tools/skip/releases/download/1.4.1/skip.zip (2.09s)
error: Tool ‘skip’ is not supported on the target platform
error: build stopped due to build-tool plugin failures
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:9029076bb687edc160a3d5201c89e92dd9fa7309f33f090c4234365c83366c31
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-latest
error: Tool ‘skip’ is not supported on the target platform
error: build stopped due to build-tool plugin failures
BUILD FAILURE 6.0 linux