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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 RxReachability, reference 1.2.1 (8087d7), with Swift 6.1 for Linux on 27 Apr 2025 03:44:10 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/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/RxSwiftCommunity/RxReachability.git
Reference: 1.2.1
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/RxSwiftCommunity/RxReachability
 * tag               1.2.1      -> FETCH_HEAD
HEAD is now at 8087d71 Merge branch 'release/1.2.1_2'
Cloned https://github.com/RxSwiftCommunity/RxReachability.git
Revision (git rev-parse @):
8087d7154796406c8981961858b31324743311cf
SUCCESS checkout https://github.com/RxSwiftCommunity/RxReachability.git at 1.2.1
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/RxSwiftCommunity/RxReachability.git
https://github.com/RxSwiftCommunity/RxReachability.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "rxswift",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "6.0.0",
            "upper_bound" : "7.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/ReactiveX/RxSwift"
    },
    {
      "identity" : "reachability.swift",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "5.1.0",
            "upper_bound" : "6.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/ashleymills/Reachability.swift"
    }
  ],
  "manifest_display_name" : "RxReachability",
  "name" : "RxReachability",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.10"
    },
    {
      "name" : "ios",
      "version" : "11.0"
    },
    {
      "name" : "tvos",
      "version" : "11.0"
    }
  ],
  "products" : [
    {
      "name" : "RxReachability",
      "targets" : [
        "RxReachability"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "RxReachabilityTests",
      "module_type" : "SwiftTarget",
      "name" : "RxReachabilityTests",
      "path" : "Tests/RxReachabilityTests",
      "product_dependencies" : [
        "RxBlocking"
      ],
      "sources" : [
        "RxReachabilityTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "RxReachability"
      ],
      "type" : "test"
    },
    {
      "c99name" : "RxReachability",
      "module_type" : "SwiftTarget",
      "name" : "RxReachability",
      "path" : "Sources/RxReachability",
      "product_dependencies" : [
        "RxSwift",
        "Reachability",
        "RxCocoa"
      ],
      "product_memberships" : [
        "RxReachability"
      ],
      "sources" : [
        "ObservableType+Reachability.swift",
        "Reachability+Rx.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/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/ashleymills/Reachability.swift
Fetching https://github.com/ReactiveX/RxSwift
[1/1908] Fetching reachability.swift
[1909/54591] Fetching reachability.swift, rxswift
Fetched https://github.com/ashleymills/Reachability.swift from cache (4.52s)
Fetched https://github.com/ReactiveX/RxSwift from cache (4.68s)
Computing version for https://github.com/ashleymills/Reachability.swift
Computed https://github.com/ashleymills/Reachability.swift at 5.2.4 (5.23s)
Computing version for https://github.com/ReactiveX/RxSwift
Computed https://github.com/ReactiveX/RxSwift at 6.9.0 (0.54s)
Creating working copy for https://github.com/ashleymills/Reachability.swift
Working copy of https://github.com/ashleymills/Reachability.swift resolved at 5.2.4
Creating working copy for https://github.com/ReactiveX/RxSwift
Working copy of https://github.com/ReactiveX/RxSwift resolved at 6.9.0
warning: 'reachability.swift': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /host/spi-builder-workspace/.build/checkouts/Reachability.swift/Sources/Info.plist
Building for debugging...
[0/10] Write sources
[0/10] Copying PrivacyInfo.xcprivacy
[0/10] Write sources
[0/10] Copying PrivacyInfo.xcprivacy
[5/10] Write sources
[5/10] Copying PrivacyInfo.xcprivacy
[8/10] Write sources
[9/10] Write swift-version-24593BA9C3E375BF.txt
[11/157] Compiling Reachability resource_bundle_accessor.swift
/host/spi-builder-workspace/.build/checkouts/Reachability.swift/Sources/Reachability.swift:28:8: error: no such module 'SystemConfiguration'
 26 | */
 27 |
 28 | import SystemConfiguration
    |        `- error: no such module 'SystemConfiguration'
 29 | import Foundation
 30 |
[12/157] Compiling RxSwift DispatchQueueConfiguration.swift
[13/157] Compiling RxSwift Disposable.swift
[14/157] Compiling RxSwift Disposables.swift
[15/157] Compiling RxSwift DisposeBag.swift
[16/157] Compiling RxSwift DisposeBase.swift
[17/157] Compiling RxSwift DistinctUntilChanged.swift
[18/157] Compiling RxSwift Do.swift
[19/157] Compiling RxSwift ElementAt.swift
[20/157] Compiling RxSwift Empty.swift
[21/157] Compiling RxSwift Enumerated.swift
[22/157] Compiling RxSwift Error.swift
[23/157] Compiling RxSwift Errors.swift
[24/157] Compiling RxSwift Event.swift
[25/157] Compiling RxSwift Filter.swift
[26/157] Compiling RxSwift First.swift
[27/157] Compiling RxSwift Generate.swift
[28/157] Compiling RxSwift GroupBy.swift
[29/157] Compiling RxSwift GroupedObservable.swift
[30/157] Compiling RxSwift HistoricalScheduler.swift
[31/157] Compiling RxSwift HistoricalSchedulerTimeConverter.swift
[32/157] Compiling RxSwift ImmediateSchedulerType.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[33/177] Emitting module Reachability
/host/spi-builder-workspace/.build/checkouts/Reachability.swift/Sources/Reachability.swift:28:8: error: no such module 'SystemConfiguration'
 26 | */
 27 |
 28 | import SystemConfiguration
    |        `- error: no such module 'SystemConfiguration'
 29 | import Foundation
 30 |
[34/177] Compiling Reachability Reachability.swift
/host/spi-builder-workspace/.build/checkouts/Reachability.swift/Sources/Reachability.swift:28:8: error: no such module 'SystemConfiguration'
 26 | */
 27 |
 28 | import SystemConfiguration
    |        `- error: no such module 'SystemConfiguration'
 29 | import Foundation
 30 |
[35/177] Compiling RxSwift Producer.swift
[36/177] Compiling RxSwift PublishSubject.swift
[37/177] Compiling RxSwift Queue.swift
[38/177] Compiling RxSwift Range.swift
[39/177] Compiling RxSwift Reactive.swift
[40/177] Compiling RxSwift RecursiveLock.swift
[41/177] Compiling RxSwift RecursiveScheduler.swift
[42/177] Compiling RxSwift Reduce.swift
[43/177] Compiling RxSwift RefCountDisposable.swift
[44/177] Compiling RxSwift Repeat.swift
[45/177] Compiling RxSwift ReplaySubject.swift
[46/177] Compiling RxSwift RetryWhen.swift
[47/177] Compiling RxSwift Rx.swift
[48/177] Compiling RxSwift RxMutableBox.swift
[49/177] Compiling RxSwift Sample.swift
[50/177] Compiling RxSwift Scan.swift
[51/177] Compiling RxSwift ScheduledDisposable.swift
[52/177] Compiling RxSwift ScheduledItem.swift
[53/177] Compiling RxSwift ScheduledItemType.swift
[54/177] Compiling RxSwift SchedulerServices+Emulation.swift
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-1":/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
warning: 'reachability.swift': found 1 file(s) which are unhandled; explicitly declare them as resources or exclude from the target
    /host/spi-builder-workspace/.build/checkouts/Reachability.swift/Sources/Info.plist
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[2/148] Emitting module Reachability
/host/spi-builder-workspace/.build/checkouts/Reachability.swift/Sources/Reachability.swift:28:8: error: no such module 'SystemConfiguration'
 26 | */
 27 |
 28 | import SystemConfiguration
    |        `- error: no such module 'SystemConfiguration'
 29 | import Foundation
 30 |
[3/148] Compiling Reachability resource_bundle_accessor.swift
/host/spi-builder-workspace/.build/checkouts/Reachability.swift/Sources/Reachability.swift:28:8: error: no such module 'SystemConfiguration'
 26 | */
 27 |
 28 | import SystemConfiguration
    |        `- error: no such module 'SystemConfiguration'
 29 | import Foundation
 30 |
[4/148] Compiling Reachability Reachability.swift
/host/spi-builder-workspace/.build/checkouts/Reachability.swift/Sources/Reachability.swift:28:8: error: no such module 'SystemConfiguration'
 26 | */
 27 |
 28 | import SystemConfiguration
    |        `- error: no such module 'SystemConfiguration'
 29 | import Foundation
 30 |
BUILD FAILURE 6.1 linux