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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 MultiToggleButton, reference 1.8.8 (a87de7), with Swift 6.1 for Linux on 29 Apr 2025 19:42:02 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/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: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/yonat/MultiToggleButton.git
Reference: 1.8.8
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/yonat/MultiToggleButton
 * tag               1.8.8      -> FETCH_HEAD
HEAD is now at a87de71 bump version to 1.8.8
Cloned https://github.com/yonat/MultiToggleButton.git
Revision (git rev-parse @):
a87de7198f812a550db9867c865468ad4c6f407f
SUCCESS checkout https://github.com/yonat/MultiToggleButton.git at 1.8.8
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/yonat/MultiToggleButton.git
https://github.com/yonat/MultiToggleButton.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "sweeterswift",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/yonat/SweeterSwift"
    }
  ],
  "manifest_display_name" : "MultiToggleButton",
  "name" : "MultiToggleButton",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "11.0"
    }
  ],
  "products" : [
    {
      "name" : "MultiToggleButton",
      "targets" : [
        "MultiToggleButton"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "5"
  ],
  "targets" : [
    {
      "c99name" : "MultiToggleButton",
      "module_type" : "SwiftTarget",
      "name" : "MultiToggleButton",
      "path" : "Sources",
      "product_dependencies" : [
        "SweeterSwift"
      ],
      "product_memberships" : [
        "MultiToggleButton"
      ],
      "resources" : [
        {
          "path" : "/host/spi-builder-workspace/Sources/PrivacyInfo.xcprivacy",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "MultiToggleButton.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$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
Fetching https://github.com/yonat/SweeterSwift
[1/346] Fetching sweeterswift
Fetched https://github.com/yonat/SweeterSwift from cache (0.36s)
Computing version for https://github.com/yonat/SweeterSwift
Computed https://github.com/yonat/SweeterSwift at 1.2.6 (1.32s)
Creating working copy for https://github.com/yonat/SweeterSwift
Working copy of https://github.com/yonat/SweeterSwift resolved at 1.2.6
Building for debugging...
[0/5] Copying PrivacyInfo.xcprivacy
[0/5] Write sources
[0/5] Copying PrivacyInfo.xcprivacy
[4/5] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[6/20] Emitting module SweeterSwift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[7/21] Compiling SweeterSwift UIStackView+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[8/21] Compiling SweeterSwift UITextView+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[9/21] Compiling SweeterSwift UIView+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[10/21] Compiling SweeterSwift UIViewController+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[11/21] Compiling SweeterSwift resource_bundle_accessor.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[12/21] Compiling SweeterSwift TimeInterval+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[13/21] Compiling SweeterSwift UIApplication+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[14/21] Compiling SweeterSwift NSManagedObjectContext+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[15/21] Compiling SweeterSwift NSObject+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[16/21] Compiling SweeterSwift String+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[17/21] Compiling SweeterSwift Swift+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[18/21] Compiling SweeterSwift Bundle+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[19/21] Compiling SweeterSwift Codable+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[20/21] Compiling SweeterSwift DateFormatter+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[21/21] Compiling SweeterSwift NSAttributedString+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/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
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/16] Compiling SweeterSwift UIView+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[3/16] Compiling SweeterSwift UIViewController+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[4/17] Compiling SweeterSwift UIStackView+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[5/17] Compiling SweeterSwift UITextView+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[6/17] Compiling SweeterSwift TimeInterval+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[7/17] Compiling SweeterSwift UIApplication+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
error: emit-module command failed with exit code 1 (use -v to see invocation)
[8/17] Emitting module SweeterSwift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[9/17] Compiling SweeterSwift String+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[10/17] Compiling SweeterSwift Swift+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[11/17] Compiling SweeterSwift Bundle+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[12/17] Compiling SweeterSwift Codable+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[13/17] Compiling SweeterSwift NSManagedObjectContext+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[14/17] Compiling SweeterSwift NSObject+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[15/17] Compiling SweeterSwift DateFormatter+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[16/17] Compiling SweeterSwift NSAttributedString+Sweeter.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
[17/17] Compiling SweeterSwift resource_bundle_accessor.swift
/host/spi-builder-workspace/.build/checkouts/SweeterSwift/Source/NSManagedObjectContext+Sweeter.swift:7:8: error: no such module 'CoreData'
 5 | //
 6 |
 7 | import CoreData
   |        `- error: no such module 'CoreData'
 8 |
 9 | public extension NSManagedObjectContext {
BUILD FAILURE 6.1 linux