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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 Ditto, reference master (8db3fe), with Swift 6.1 for Linux on 25 Apr 2025 12:46:20 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: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/xspyhack/ditto.git
Reference: master
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/xspyhack/ditto
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 8db3fee Rename routing to router
Cloned https://github.com/xspyhack/ditto.git
Revision (git rev-parse @):
8db3feeca356eb3d5debb63dd1bdb1e1d58b2c9f
SUCCESS checkout https://github.com/xspyhack/ditto.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/xspyhack/ditto.git
https://github.com/xspyhack/ditto.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Ditto",
  "name" : "Ditto",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Ditto",
      "targets" : [
        "Ditto"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "DittoTests",
      "module_type" : "SwiftTarget",
      "name" : "DittoTests",
      "path" : "Tests/DittoTests",
      "sources" : [
        "ContextTests.swift",
        "EndpointTests.swift",
        "RouteTests.swift",
        "RouterTests.swift"
      ],
      "target_dependencies" : [
        "Ditto"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Ditto",
      "module_type" : "SwiftTarget",
      "name" : "Ditto",
      "path" : "Sources/Ditto",
      "product_memberships" : [
        "Ditto"
      ],
      "sources" : [
        "Context.swift",
        "Endpoint.swift",
        "Extractable.swift",
        "Routable.swift",
        "Route.swift",
        "Router.swift",
        "Routing.swift",
        "SIL.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$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
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
[3/10] Compiling Ditto Routing.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[4/11] Compiling Ditto Route.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[5/11] Compiling Ditto Extractable.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[6/11] Compiling Ditto Router.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[7/11] Compiling Ditto Routable.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
error: emit-module command failed with exit code 1 (use -v to see invocation)
[8/11] Emitting module Ditto
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[9/11] Compiling Ditto Context.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[10/11] Compiling Ditto Endpoint.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[11/11] Compiling Ditto SIL.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
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
[2/9] Compiling Ditto Routing.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[3/10] Compiling Ditto Extractable.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/10] Emitting module Ditto
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[5/10] Compiling Ditto Context.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[6/10] Compiling Ditto Endpoint.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[7/10] Compiling Ditto Router.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[8/10] Compiling Ditto Route.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[9/10] Compiling Ditto Routable.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
[10/10] Compiling Ditto SIL.swift
/host/spi-builder-workspace/Sources/Ditto/SIL.swift:10:8: error: no such module 'MachO'
  8 |
  9 | import Foundation
 10 | import MachO
    |        `- error: no such module 'MachO'
 11 | import Accelerate
 12 |
BUILD FAILURE 6.1 linux