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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 Stacked, reference 0.3.1 (b510bc), with Swift 6.1 for Linux on 28 Apr 2025 16:10:29 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/ml-archive/stacked.git
Reference: 0.3.1
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/ml-archive/stacked
 * tag               0.3.1      -> FETCH_HEAD
HEAD is now at b510bcb Merge pull request #20 from nodes-vapor/feature/add-library
Cloned https://github.com/ml-archive/stacked.git
Revision (git rev-parse @):
b510bcbd5fb3f84f3a78540a2c508f477ec44de8
SUCCESS checkout https://github.com/ml-archive/stacked.git at 0.3.1
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/ml-archive/stacked.git
https://github.com/ml-archive/stacked.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "cstack",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/nodes-vapor/cstack.git"
    }
  ],
  "manifest_display_name" : "Stacked",
  "name" : "Stacked",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Stacked",
      "targets" : [
        "Stacked"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "StackedTests",
      "module_type" : "SwiftTarget",
      "name" : "StackedTests",
      "path" : "Tests/StackedTests",
      "sources" : [
        "StackedTests.swift"
      ],
      "target_dependencies" : [
        "Stacked"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Stacked",
      "module_type" : "SwiftTarget",
      "name" : "Stacked",
      "path" : "Sources/Stacked",
      "product_dependencies" : [
        "CStack"
      ],
      "product_memberships" : [
        "Stacked"
      ],
      "sources" : [
        "Stacked.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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
Fetching https://github.com/nodes-vapor/cstack.git
[1/16] Fetching cstack
Fetched https://github.com/nodes-vapor/cstack.git from cache (0.33s)
Computing version for https://github.com/nodes-vapor/cstack.git
Computed https://github.com/nodes-vapor/cstack.git at 1.0.1 (2.01s)
Creating working copy for https://github.com/nodes-vapor/cstack.git
Working copy of https://github.com/nodes-vapor/cstack.git resolved at 1.0.1
warning: 'cstack': ignoring declared target(s) 'CStack' in the system package
warning: you may be able to install cstack using your system-packager:
    apt-get install cstack
warning: you may be able to install cstack using your system-packager:
    apt-get install cstack
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/4] Emitting module Stacked
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/cstack/shim.h:4:10: error: 'stack.h' file not found
2 | #define __CSTACK_SHIM_H__
3 |
4 | #include "stack.h"
  |          `- error: 'stack.h' file not found
5 |
6 | #endif
/host/spi-builder-workspace/Sources/Stacked/Stacked.swift:1:8: error: could not build C module 'CStack'
 1 | import CStack
   |        `- error: could not build C module 'CStack'
 2 | import Foundation
 3 |
[4/4] Compiling Stacked Stacked.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/cstack/shim.h:4:10: error: 'stack.h' file not found
2 | #define __CSTACK_SHIM_H__
3 |
4 | #include "stack.h"
  |          `- error: 'stack.h' file not found
5 |
6 | #endif
/host/spi-builder-workspace/Sources/Stacked/Stacked.swift:1:8: error: could not build C module 'CStack'
 1 | import CStack
   |        `- error: could not build C module 'CStack'
 2 | import Foundation
 3 |
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
warning: 'cstack': ignoring declared target(s) 'CStack' in the system package
warning: you may be able to install cstack using your system-packager:
    apt-get install cstack
warning: you may be able to install cstack using your system-packager:
    apt-get install cstack
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/3] Compiling Stacked Stacked.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/cstack/shim.h:4:10: error: 'stack.h' file not found
2 | #define __CSTACK_SHIM_H__
3 |
4 | #include "stack.h"
  |          `- error: 'stack.h' file not found
5 |
6 | #endif
/host/spi-builder-workspace/Sources/Stacked/Stacked.swift:1:8: error: could not build C module 'CStack'
 1 | import CStack
   |        `- error: could not build C module 'CStack'
 2 | import Foundation
 3 |
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/3] Emitting module Stacked
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/cstack/shim.h:4:10: error: 'stack.h' file not found
2 | #define __CSTACK_SHIM_H__
3 |
4 | #include "stack.h"
  |          `- error: 'stack.h' file not found
5 |
6 | #endif
/host/spi-builder-workspace/Sources/Stacked/Stacked.swift:1:8: error: could not build C module 'CStack'
 1 | import CStack
   |        `- error: could not build C module 'CStack'
 2 | import Foundation
 3 |
BUILD FAILURE 6.1 linux