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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 SnapshotTestingStitch, reference main (a1c51a), with Swift 6.1 for macOS (SPM) on 26 Apr 2025 19:19:06 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/sherlouk/swift-snapshot-testing-stitch.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/sherlouk/swift-snapshot-testing-stitch
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at a1c51ab Merge pull request #11 from MojtabaHs/docs/fix-typos
Cloned https://github.com/sherlouk/swift-snapshot-testing-stitch.git
Revision (git rev-parse @):
a1c51ab705388cecee16ab80f6e0f4d1623595b1
SUCCESS checkout https://github.com/sherlouk/swift-snapshot-testing-stitch.git at main
Fetching https://github.com/alexey1312/SnapshotTestingHEIC.git
Fetching https://github.com/pointfreeco/swift-snapshot-testing.git from cache
[1/200] Fetching snapshottestingheic
Fetched https://github.com/alexey1312/SnapshotTestingHEIC.git from cache (0.83s)
Fetched https://github.com/pointfreeco/swift-snapshot-testing.git from cache (0.83s)
Computing version for https://github.com/alexey1312/SnapshotTestingHEIC.git
Computed https://github.com/alexey1312/SnapshotTestingHEIC.git at 1.2.1 (1.45s)
Computing version for https://github.com/pointfreeco/swift-snapshot-testing.git
Computed https://github.com/pointfreeco/swift-snapshot-testing.git at 1.10.0 (0.60s)
Creating working copy for https://github.com/alexey1312/SnapshotTestingHEIC.git
Working copy of https://github.com/alexey1312/SnapshotTestingHEIC.git resolved at 1.2.1
Creating working copy for https://github.com/pointfreeco/swift-snapshot-testing.git
Working copy of https://github.com/pointfreeco/swift-snapshot-testing.git resolved at 1.10.0
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "swift-snapshot-testing-stitch",
      "name": "SnapshotTestingStitch",
      "url": "https://github.com/sherlouk/swift-snapshot-testing-stitch.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-snapshot-testing-stitch",
      "dependencies": [
        {
          "identity": "swift-snapshot-testing",
          "name": "swift-snapshot-testing",
          "url": "https://github.com/pointfreeco/swift-snapshot-testing.git",
          "version": "1.18.3",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-snapshot-testing",
          "dependencies": [
            {
              "identity": "swift-custom-dump",
              "name": "swift-custom-dump",
              "url": "https://github.com/pointfreeco/swift-custom-dump",
              "version": "1.3.3",
              "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-custom-dump",
              "dependencies": [
                {
                  "identity": "xctest-dynamic-overlay",
                  "name": "xctest-dynamic-overlay",
                  "url": "https://github.com/pointfreeco/xctest-dynamic-overlay",
                  "version": "1.5.2",
                  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/xctest-dynamic-overlay",
                  "dependencies": [
                  ]
                }
              ]
            },
            {
              "identity": "swift-syntax",
              "name": "swift-syntax",
              "url": "https://github.com/swiftlang/swift-syntax",
              "version": "601.0.1",
              "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-syntax",
              "dependencies": [
              ]
            }
          ]
        },
        {
          "identity": "snapshottestingheic",
          "name": "SnapshotTestingHEIC",
          "url": "https://github.com/alexey1312/SnapshotTestingHEIC.git",
          "version": "1.5.1",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/SnapshotTestingHEIC",
          "dependencies": [
            {
              "identity": "swift-snapshot-testing",
              "name": "swift-snapshot-testing",
              "url": "https://github.com/pointfreeco/swift-snapshot-testing.git",
              "version": "1.18.3",
              "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-snapshot-testing",
              "dependencies": [
                {
                  "identity": "swift-custom-dump",
                  "name": "swift-custom-dump",
                  "url": "https://github.com/pointfreeco/swift-custom-dump",
                  "version": "1.3.3",
                  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-custom-dump",
                  "dependencies": [
                    {
                      "identity": "xctest-dynamic-overlay",
                      "name": "xctest-dynamic-overlay",
                      "url": "https://github.com/pointfreeco/xctest-dynamic-overlay",
                      "version": "1.5.2",
                      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/xctest-dynamic-overlay",
                      "dependencies": [
                      ]
                    }
                  ]
                },
                {
                  "identity": "swift-syntax",
                  "name": "swift-syntax",
                  "url": "https://github.com/swiftlang/swift-syntax",
                  "version": "601.0.1",
                  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-syntax",
                  "dependencies": [
                  ]
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/sherlouk/swift-snapshot-testing-stitch.git
[1/221] Fetching swift-snapshot-testing-stitch
Fetched https://github.com/sherlouk/swift-snapshot-testing-stitch.git from cache (0.82s)
Fetching https://github.com/alexey1312/SnapshotTestingHEIC.git from cache
Fetching https://github.com/pointfreeco/swift-snapshot-testing.git from cache
Fetched https://github.com/alexey1312/SnapshotTestingHEIC.git from cache (0.50s)
Fetched https://github.com/pointfreeco/swift-snapshot-testing.git from cache (0.50s)
Computing version for https://github.com/alexey1312/SnapshotTestingHEIC.git
Computed https://github.com/alexey1312/SnapshotTestingHEIC.git at 1.5.1 (1.09s)
Computing version for https://github.com/pointfreeco/swift-snapshot-testing.git
Computed https://github.com/pointfreeco/swift-snapshot-testing.git at 1.18.3 (0.49s)
Fetching https://github.com/pointfreeco/swift-custom-dump from cache
Fetching https://github.com/swiftlang/swift-syntax from cache
Fetched https://github.com/pointfreeco/swift-custom-dump from cache (1.10s)
Fetched https://github.com/swiftlang/swift-syntax from cache (1.12s)
Computing version for https://github.com/pointfreeco/swift-custom-dump
Computed https://github.com/pointfreeco/swift-custom-dump at 1.3.3 (1.62s)
Fetching https://github.com/pointfreeco/xctest-dynamic-overlay from cache
Fetched https://github.com/pointfreeco/xctest-dynamic-overlay from cache (0.46s)
Computing version for https://github.com/swiftlang/swift-syntax
Computed https://github.com/swiftlang/swift-syntax at 601.0.1 (1.18s)
Computing version for https://github.com/pointfreeco/xctest-dynamic-overlay
Computed https://github.com/pointfreeco/xctest-dynamic-overlay at 1.5.2 (0.49s)
Creating working copy for https://github.com/pointfreeco/xctest-dynamic-overlay
Working copy of https://github.com/pointfreeco/xctest-dynamic-overlay resolved at 1.5.2
Creating working copy for https://github.com/pointfreeco/swift-custom-dump
Working copy of https://github.com/pointfreeco/swift-custom-dump resolved at 1.3.3
Creating working copy for https://github.com/sherlouk/swift-snapshot-testing-stitch.git
Working copy of https://github.com/sherlouk/swift-snapshot-testing-stitch.git resolved at main (a1c51ab)
Creating working copy for https://github.com/pointfreeco/swift-snapshot-testing.git
Working copy of https://github.com/pointfreeco/swift-snapshot-testing.git resolved at 1.18.3
Creating working copy for https://github.com/alexey1312/SnapshotTestingHEIC.git
Working copy of https://github.com/alexey1312/SnapshotTestingHEIC.git resolved at 1.5.1
Creating working copy for https://github.com/swiftlang/swift-syntax
Working copy of https://github.com/swiftlang/swift-syntax resolved at 601.0.1
warning: '.resolve-product-dependencies': dependency 'swift-snapshot-testing-stitch' is not used by any target
Found 2 product dependencies
  - swift-snapshot-testing
  - SnapshotTestingHEIC
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/sherlouk/swift-snapshot-testing-stitch.git
https://github.com/sherlouk/swift-snapshot-testing-stitch.git
{
  "dependencies" : [
    {
      "identity" : "swift-snapshot-testing",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.10.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/pointfreeco/swift-snapshot-testing.git"
    },
    {
      "identity" : "snapshottestingheic",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.2.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/alexey1312/SnapshotTestingHEIC.git"
    }
  ],
  "manifest_display_name" : "SnapshotTestingStitch",
  "name" : "SnapshotTestingStitch",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "SnapshotTestingStitch",
      "targets" : [
        "SnapshotTestingStitch"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SnapshotTestingStitchTests",
      "module_type" : "SwiftTarget",
      "name" : "SnapshotTestingStitchTests",
      "path" : "Tests/SnapshotTestingStitchTests",
      "sources" : [
        "SnapshotTestingStitch.swift",
        "SnapshotTestingStitchHEIC.swift"
      ],
      "target_dependencies" : [
        "SnapshotTestingStitch"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SnapshotTestingStitch",
      "module_type" : "SwiftTarget",
      "name" : "SnapshotTestingStitch",
      "path" : "Sources/SnapshotTestingStitch",
      "product_dependencies" : [
        "SnapshotTesting",
        "SnapshotTestingHEIC"
      ],
      "product_memberships" : [
        "SnapshotTestingStitch"
      ],
      "sources" : [
        "ImageFormat.swift",
        "Snapshotting.swift",
        "StitchStyle.swift",
        "StitchTask.swift",
        "Stitcher.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
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
error: the library 'SnapshotTestingStitch' requires macos 10.13, but depends on the product 'SnapshotTesting' which requires macos 10.15; consider changing the library 'SnapshotTestingStitch' to require macos 10.15 or later, or the product 'SnapshotTesting' to require macos 10.13 or earlier.
error: the library 'SnapshotTestingStitch' requires macos 10.13, but depends on the product 'SnapshotTestingHEIC' which requires macos 10.15; consider changing the library 'SnapshotTestingStitch' to require macos 10.15 or later, or the product 'SnapshotTestingHEIC' to require macos 10.13 or earlier.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
error: the library 'SnapshotTestingStitch' requires macos 10.13, but depends on the product 'SnapshotTesting' which requires macos 10.15; consider changing the library 'SnapshotTestingStitch' to require macos 10.15 or later, or the product 'SnapshotTesting' to require macos 10.13 or earlier.
error: the library 'SnapshotTestingStitch' requires macos 10.13, but depends on the product 'SnapshotTestingHEIC' which requires macos 10.15; consider changing the library 'SnapshotTestingStitch' to require macos 10.15 or later, or the product 'SnapshotTestingHEIC' to require macos 10.13 or earlier.
BUILD FAILURE 6.1 macosSpm