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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 Position, reference 0.11.0 (51f1f5), with Swift 6.1 for Linux on 27 Apr 2025 17:10:38 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-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/piemonte/Position.git
Reference: 0.11.0
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/piemonte/Position
 * tag               0.11.0     -> FETCH_HEAD
HEAD is now at 51f1f52 update docs
Cloned https://github.com/piemonte/Position.git
Revision (git rev-parse @):
51f1f52127e196645d129ec007f156fc5168e627
SUCCESS checkout https://github.com/piemonte/Position.git at 0.11.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/piemonte/Position.git
https://github.com/piemonte/Position.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
error: 'spi-builder-workspace': Invalid manifest (compiled with: ["/usr/bin/swiftc", "-vfsoverlay", "/tmp/TemporaryDirectory.c41PIM/vfs.yaml", "-L", "/usr/lib/swift/pm/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/usr/lib/swift/pm/ManifestAPI", "-swift-version", "5", "-I", "/usr/lib/swift/pm/ManifestAPI", "-package-description-version", "5.0.0", "/host/spi-builder-workspace/Package.swift", "-o", "/tmp/TemporaryDirectory.ba2nil/spi-builder-workspace-manifest"])
/host/spi-builder-workspace/Package.swift:8:13: error: 'v14' is unavailable
 6 |     name: "Position",
 7 |     platforms: [
 8 |       .iOS(.v14)
   |             `- error: 'v14' is unavailable
 9 |     ],
10 |     products: [
PackageDescription.SupportedPlatform:79:27: note: 'v14' was introduced in PackageDescription 5.3
 77 |         public static let v13: SupportedPlatform.IOSVersion
 78 |         @available(_PackageDescription 5.3)
 79 |         public static let v14: SupportedPlatform.IOSVersion
    |                           `- note: 'v14' was introduced in PackageDescription 5.3
 80 |         @available(_PackageDescription 5.5)
 81 |         public static let v15: SupportedPlatform.IOSVersion
error: fatalError
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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
error: 'spi-builder-workspace': Invalid manifest (compiled with: ["/usr/bin/swiftc", "-vfsoverlay", "/tmp/TemporaryDirectory.mnVpHO/vfs.yaml", "-L", "/usr/lib/swift/pm/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/usr/lib/swift/pm/ManifestAPI", "-swift-version", "5", "-I", "/usr/lib/swift/pm/ManifestAPI", "-package-description-version", "5.0.0", "/host/spi-builder-workspace/Package.swift", "-o", "/tmp/TemporaryDirectory.x1S9E8/spi-builder-workspace-manifest"])
/host/spi-builder-workspace/Package.swift:7:13: error: 'v14' is unavailable
 5 |     name: "Position",
 6 |     platforms: [
 7 |       .iOS(.v14)
   |             `- error: 'v14' is unavailable
 8 |     ],
 9 |     products: [
PackageDescription.SupportedPlatform.IOSVersion.v14:4:23: note: 'v14' was introduced in PackageDescription 5.3
2 |   struct IOSVersion {
3 | @available(_PackageDescription 5.3)
4 |     public static let v14: SupportedPlatform.IOSVersion  }
  |                       `- note: 'v14' was introduced in PackageDescription 5.3
5 | }
6 |
error: 'spi-builder-workspace': Invalid manifest (compiled with: ["/usr/bin/swiftc", "-vfsoverlay", "/tmp/TemporaryDirectory.bt5mQl/vfs.yaml", "-L", "/usr/lib/swift/pm/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/usr/lib/swift/pm/ManifestAPI", "-swift-version", "5", "-I", "/usr/lib/swift/pm/ManifestAPI", "-package-description-version", "5.0.0", "/host/spi-builder-workspace/Package.swift", "-o", "/tmp/TemporaryDirectory.0bv34E/spi-builder-workspace-manifest"])
/host/spi-builder-workspace/Package.swift:7:13: error: 'v14' is unavailable
 5 |     name: "Position",
 6 |     platforms: [
 7 |       .iOS(.v14)
   |             `- error: 'v14' is unavailable
 8 |     ],
 9 |     products: [
PackageDescription.SupportedPlatform.IOSVersion.v14:4:23: note: 'v14' was introduced in PackageDescription 5.3
2 |   struct IOSVersion {
3 | @available(_PackageDescription 5.3)
4 |     public static let v14: SupportedPlatform.IOSVersion  }
  |                       `- note: 'v14' was introduced in PackageDescription 5.3
5 | }
6 |
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/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
error: 'spi-builder-workspace': Invalid manifest (compiled with: ["/usr/bin/swiftc", "-vfsoverlay", "/tmp/TemporaryDirectory.QtD3cL/vfs.yaml", "-L", "/usr/lib/swift/pm/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/usr/lib/swift/pm/ManifestAPI", "-swift-version", "5", "-I", "/usr/lib/swift/pm/ManifestAPI", "-package-description-version", "5.0.0", "/host/spi-builder-workspace/Package.swift", "-o", "/tmp/TemporaryDirectory.adw25U/spi-builder-workspace-manifest"])
/host/spi-builder-workspace/Package.swift:7:13: error: 'v14' is unavailable
 5 |     name: "Position",
 6 |     platforms: [
 7 |       .iOS(.v14)
   |             `- error: 'v14' is unavailable
 8 |     ],
 9 |     products: [
PackageDescription.SupportedPlatform.IOSVersion.v14:4:23: note: 'v14' was introduced in PackageDescription 5.3
2 |   struct IOSVersion {
3 | @available(_PackageDescription 5.3)
4 |     public static let v14: SupportedPlatform.IOSVersion  }
  |                       `- note: 'v14' was introduced in PackageDescription 5.3
5 | }
6 |
error: 'spi-builder-workspace': Invalid manifest (compiled with: ["/usr/bin/swiftc", "-vfsoverlay", "/tmp/TemporaryDirectory.JiQHkR/vfs.yaml", "-L", "/usr/lib/swift/pm/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/usr/lib/swift/pm/ManifestAPI", "-swift-version", "5", "-I", "/usr/lib/swift/pm/ManifestAPI", "-package-description-version", "5.0.0", "/host/spi-builder-workspace/Package.swift", "-o", "/tmp/TemporaryDirectory.gEHmcb/spi-builder-workspace-manifest"])
/host/spi-builder-workspace/Package.swift:7:13: error: 'v14' is unavailable
 5 |     name: "Position",
 6 |     platforms: [
 7 |       .iOS(.v14)
   |             `- error: 'v14' is unavailable
 8 |     ],
 9 |     products: [
PackageDescription.SupportedPlatform.IOSVersion.v14:4:23: note: 'v14' was introduced in PackageDescription 5.3
2 |   struct IOSVersion {
3 | @available(_PackageDescription 5.3)
4 |     public static let v14: SupportedPlatform.IOSVersion  }
  |                       `- note: 'v14' was introduced in PackageDescription 5.3
5 | }
6 |
BUILD FAILURE 6.1 linux