The Swift Package Index logo.Swift Package Index

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 BuildEnvironment, reference master (be3551), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 15:32:55 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/DimaRU/BuildEnvironment.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/DimaRU/BuildEnvironment
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at be3551b Fix README issues
Cloned https://github.com/DimaRU/BuildEnvironment.git
Revision (git rev-parse @):
be3551bd2b2d63e72426c4693c25f6f36108da63
SUCCESS checkout https://github.com/DimaRU/BuildEnvironment.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/DimaRU/BuildEnvironment.git
https://github.com/DimaRU/BuildEnvironment.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "BuildEnvironment",
  "name" : "BuildEnvironment",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "11.0"
    },
    {
      "name" : "ios",
      "version" : "14.0"
    },
    {
      "name" : "watchos",
      "version" : "7.0"
    },
    {
      "name" : "tvos",
      "version" : "14.0"
    }
  ],
  "products" : [
    {
      "name" : "BuildEnvPlugin",
      "targets" : [
        "BuildEnvPlugin"
      ],
      "type" : {
        "plugin" : null
      }
    },
    {
      "name" : "BuildEnvGenerator",
      "targets" : [
        "BuildEnvGenerator"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "BuildEnvExample",
      "targets" : [
        "BuildEnvExample"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "BuildEnvPlugin",
      "module_type" : "PluginTarget",
      "name" : "BuildEnvPlugin",
      "path" : "Plugins/BuildEnvPlugin",
      "plugin_capability" : {
        "type" : "buildTool"
      },
      "product_memberships" : [
        "BuildEnvPlugin",
        "BuildEnvExample"
      ],
      "sources" : [
        "plugin.swift"
      ],
      "target_dependencies" : [
        "BuildEnvGenerator"
      ],
      "type" : "plugin"
    },
    {
      "c99name" : "BuildEnvGenerator",
      "module_type" : "SwiftTarget",
      "name" : "BuildEnvGenerator",
      "path" : "Sources/BuildEnvGenerator",
      "product_memberships" : [
        "BuildEnvPlugin",
        "BuildEnvGenerator",
        "BuildEnvExample"
      ],
      "sources" : [
        "BuildEnvGenerator.swift",
        "DictionaryExtensions.swift",
        "GetArgument.swift",
        "stderror.swift"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "BuildEnvExample",
      "module_type" : "SwiftTarget",
      "name" : "BuildEnvExample",
      "path" : "Sources/BuildEnvExample",
      "product_memberships" : [
        "BuildEnvExample"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "BuildEnvPlugin"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.8"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -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
[0/6] Write sources
[1/6] Write BuildEnvGenerator-tool-entitlement.plist
[2/6] Write swift-version-2F0A5646E1D333AE.txt
[4/11] Compiling BuildEnvGenerator GetArgument.swift
[5/11] Compiling BuildEnvGenerator stderror.swift
/Users/admin/builder/spi-builder-workspace/Sources/BuildEnvGenerator/stderror.swift:8:5: warning: var 'stderror' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 6 | import Foundation
 7 |
 8 | var stderror = FileHandle.standardError
   |     |- warning: var 'stderror' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'stderror' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: add '@MainActor' to make var 'stderror' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 9 |
10 | extension FileHandle: @retroactive TextOutputStream {
[6/11] Compiling BuildEnvGenerator DictionaryExtensions.swift
[7/11] Emitting module BuildEnvGenerator
/Users/admin/builder/spi-builder-workspace/Sources/BuildEnvGenerator/stderror.swift:8:5: warning: var 'stderror' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 6 | import Foundation
 7 |
 8 | var stderror = FileHandle.standardError
   |     |- warning: var 'stderror' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'stderror' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: add '@MainActor' to make var 'stderror' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 9 |
10 | extension FileHandle: @retroactive TextOutputStream {
[8/11] Compiling BuildEnvGenerator BuildEnvGenerator.swift
[8/11] Write Objects.LinkFileList
[9/11] Linking BuildEnvGenerator-tool
[10/11] Applying BuildEnvGenerator-tool
[1/1] Compiling plugin BuildEnvPlugin
Building for debugging...
[1/18] Write sources
[2/18] Write BuildEnvExample-entitlement.plist
[2/18] Write BuildEnvGenerator-tool-entitlement.plist
[3/18] Write BuildEnvGenerator-entitlement.plist
[6/18] Write swift-version-2F0A5646E1D333AE.txt
[7/23] Write Objects.LinkFileList
[9/23] Compiling BuildEnvGenerator GetArgument.swift
[10/23] Compiling BuildEnvGenerator stderror.swift
/Users/admin/builder/spi-builder-workspace/Sources/BuildEnvGenerator/stderror.swift:8:5: warning: var 'stderror' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 6 | import Foundation
 7 |
 8 | var stderror = FileHandle.standardError
   |     |- warning: var 'stderror' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'stderror' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: add '@MainActor' to make var 'stderror' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 9 |
10 | extension FileHandle: @retroactive TextOutputStream {
[10/23] Linking BuildEnvGenerator-tool
[11/23] Applying BuildEnvGenerator-tool
[13/23] Emitting module BuildEnvGenerator
/Users/admin/builder/spi-builder-workspace/Sources/BuildEnvGenerator/stderror.swift:8:5: warning: var 'stderror' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 6 | import Foundation
 7 |
 8 | var stderror = FileHandle.standardError
   |     |- warning: var 'stderror' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |     |- note: convert 'stderror' to a 'let' constant to make 'Sendable' shared state immutable
   |     |- note: add '@MainActor' to make var 'stderror' part of global actor 'MainActor'
   |     `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 9 |
10 | extension FileHandle: @retroactive TextOutputStream {
[14/23] Compiling BuildEnvGenerator BuildEnvGenerator.swift
[15/23] Compiling BuildEnvGenerator DictionaryExtensions.swift
[15/23] Write Objects.LinkFileList
Error in line 12 of /Users/admin/builder/spi-builder-workspace/buildenv.config: no environment variable USER
[16/23] Generating BuildEnvPlugin
[16/23] Linking BuildEnvGenerator
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
[0/4] Write swift-version-2F0A5646E1D333AE.txt
[2/9] Compiling BuildEnvGenerator GetArgument.swift
[3/9] Compiling BuildEnvGenerator stderror.swift
[4/9] Emitting module BuildEnvGenerator
[5/9] Compiling BuildEnvGenerator DictionaryExtensions.swift
[6/9] Compiling BuildEnvGenerator BuildEnvGenerator.swift
[6/8] Linking BuildEnvGenerator-tool
[7/8] Applying BuildEnvGenerator-tool
[0/1] Planning build
[1/1] Compiling plugin BuildEnvPlugin
Building for debugging...
[1/13] Write swift-version-2F0A5646E1D333AE.txt
[3/17] Compiling BuildEnvGenerator stderror.swift
[4/17] Compiling BuildEnvGenerator DictionaryExtensions.swift
[5/17] Compiling BuildEnvGenerator GetArgument.swift
[5/17] Linking BuildEnvGenerator-tool
[6/17] Applying BuildEnvGenerator-tool
[8/17] Emitting module BuildEnvGenerator
[9/17] Compiling BuildEnvGenerator BuildEnvGenerator.swift
Error in line 12 of /Users/admin/builder/spi-builder-workspace/buildenv.config: no environment variable USER
[9/16] Generating BuildEnvPlugin
[9/16] Linking BuildEnvGenerator
BUILD FAILURE 6.1 macosSpm