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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 ios-snapshot-test-case, reference 8.0.0 (7b1077), with Swift 6.1 for Linux on 26 Apr 2025 16:24:49 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/uber/ios-snapshot-test-case.git
Reference: 8.0.0
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/uber/ios-snapshot-test-case
 * tag               8.0.0      -> FETCH_HEAD
HEAD is now at 7b10770 Update version numbers
Cloned https://github.com/uber/ios-snapshot-test-case.git
Revision (git rev-parse @):
7b10770333a961be6e5a41c9ce04b8c6d3990126
SUCCESS checkout https://github.com/uber/ios-snapshot-test-case.git at 8.0.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/uber/ios-snapshot-test-case.git
https://github.com/uber/ios-snapshot-test-case.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
error: 'spi-builder-workspace': Invalid manifest (compiled with: ["/usr/bin/swiftc", "-vfsoverlay", "/tmp/TemporaryDirectory.eT10SF/vfs.yaml", "-L", "/usr/lib/swift/pm/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/usr/lib/swift/pm/ManifestAPI", "-swift-version", "5", "-I", "/usr/lib/swift/pm/ManifestAPI", "-package-description-version", "5.3.0", "/host/spi-builder-workspace/Package.swift", "-o", "/tmp/TemporaryDirectory.ksy3Lb/spi-builder-workspace-manifest"])
/host/spi-builder-workspace/Package.swift:5:8: error: no such module 'CoreImage'
 3 | // The swift-tools-version declares the minimum version of Swift required to build this package.
 4 | import PackageDescription
 5 | import CoreImage
   |        `- error: no such module 'CoreImage'
 6 |
 7 | let package = Package(
error: fatalError
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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.nMKkQ1/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", "5.3.0", "/host/spi-builder-workspace/Package.swift", "-o", "/tmp/TemporaryDirectory.yC3E8Z/spi-builder-workspace-manifest"])
/host/spi-builder-workspace/Package.swift:4:8: error: no such module 'CoreImage'
 2 | // The swift-tools-version declares the minimum version of Swift required to build this package.
 3 | import PackageDescription
 4 | import CoreImage
   |        `- error: no such module 'CoreImage'
 5 |
 6 | let package = Package(
error: 'spi-builder-workspace': Invalid manifest (compiled with: ["/usr/bin/swiftc", "-vfsoverlay", "/tmp/TemporaryDirectory.hY8Onm/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", "5.3.0", "/host/spi-builder-workspace/Package.swift", "-o", "/tmp/TemporaryDirectory.uLzDJH/spi-builder-workspace-manifest"])
/host/spi-builder-workspace/Package.swift:4:8: error: no such module 'CoreImage'
 2 | // The swift-tools-version declares the minimum version of Swift required to build this package.
 3 | import PackageDescription
 4 | import CoreImage
   |        `- error: no such module 'CoreImage'
 5 |
 6 | let package = Package(
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.gbA4ZR/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", "5.3.0", "/host/spi-builder-workspace/Package.swift", "-o", "/tmp/TemporaryDirectory.odwf3P/spi-builder-workspace-manifest"])
/host/spi-builder-workspace/Package.swift:4:8: error: no such module 'CoreImage'
 2 | // The swift-tools-version declares the minimum version of Swift required to build this package.
 3 | import PackageDescription
 4 | import CoreImage
   |        `- error: no such module 'CoreImage'
 5 |
 6 | let package = Package(
error: 'spi-builder-workspace': Invalid manifest (compiled with: ["/usr/bin/swiftc", "-vfsoverlay", "/tmp/TemporaryDirectory.lNYa2X/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", "5.3.0", "/host/spi-builder-workspace/Package.swift", "-o", "/tmp/TemporaryDirectory.dmuNb7/spi-builder-workspace-manifest"])
/host/spi-builder-workspace/Package.swift:4:8: error: no such module 'CoreImage'
 2 | // The swift-tools-version declares the minimum version of Swift required to build this package.
 3 | import PackageDescription
 4 | import CoreImage
   |        `- error: no such module 'CoreImage'
 5 |
 6 | let package = Package(
BUILD FAILURE 6.1 linux