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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

Successful build of swift-backtrace, reference 1.3.5 (7277ee), with Swift 6.1 for macOS (SPM) on 28 Apr 2025 23:08:37 UTC.

Swift 6 data race errors: 0

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/swift-server/swift-backtrace.git
Reference: 1.3.5
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/swift-server/swift-backtrace
 * tag               1.3.5      -> FETCH_HEAD
HEAD is now at 7277ee0 Merge pull request #73 from euanh/do-not-build-demangle-after-5.9
Cloned https://github.com/swift-server/swift-backtrace.git
Revision (git rev-parse @):
7277ee0e0378d27465b304c668d8e914192d986f
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/swift-server/swift-backtrace.git at 1.3.5
Fetching https://github.com/apple/swift-docc-plugin
[1/2049] Fetching swift-docc-plugin
Fetched https://github.com/apple/swift-docc-plugin from cache (1.22s)
Computing version for https://github.com/apple/swift-docc-plugin
Computed https://github.com/apple/swift-docc-plugin at 1.4.3 (1.85s)
Fetching https://github.com/swiftlang/swift-docc-symbolkit from cache
Fetched https://github.com/swiftlang/swift-docc-symbolkit from cache (0.85s)
Computing version for https://github.com/swiftlang/swift-docc-symbolkit
Computed https://github.com/swiftlang/swift-docc-symbolkit at 1.0.0 (1.57s)
Creating working copy for https://github.com/swiftlang/swift-docc-symbolkit
Working copy of https://github.com/swiftlang/swift-docc-symbolkit resolved at 1.0.0
Creating working copy for https://github.com/apple/swift-docc-plugin
Working copy of https://github.com/apple/swift-docc-plugin resolved at 1.4.3
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "swift-backtrace",
      "name": "swift-backtrace",
      "url": "https://github.com/swift-server/swift-backtrace.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-backtrace",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/swift-server/swift-backtrace.git
[1/631] Fetching swift-backtrace
Fetched https://github.com/swift-server/swift-backtrace.git from cache (0.76s)
Creating working copy for https://github.com/swift-server/swift-backtrace.git
Working copy of https://github.com/swift-server/swift-backtrace.git resolved at 1.3.5 (7277ee0)
warning: '.resolve-product-dependencies': dependency 'swift-backtrace' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/swift-server/swift-backtrace.git
https://github.com/swift-server/swift-backtrace.git
{
  "dependencies" : [
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "swift-backtrace",
  "name" : "swift-backtrace",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Backtrace",
      "targets" : [
        "Backtrace"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "Sample",
      "targets" : [
        "Sample"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Sample",
      "module_type" : "SwiftTarget",
      "name" : "Sample",
      "path" : "Sources/Sample",
      "product_memberships" : [
        "Sample"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "Backtrace"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "CBacktrace",
      "module_type" : "ClangTarget",
      "name" : "CBacktrace",
      "path" : "Sources/CBacktrace",
      "product_memberships" : [
        "Backtrace",
        "Sample"
      ],
      "sources" : [
        "atomic.c",
        "backtrace.c",
        "dwarf.c",
        "elf.c",
        "fileline.c",
        "mmap.c",
        "mmapio.c",
        "posix.c",
        "print.c",
        "simple.c",
        "sort.c",
        "state.c"
      ],
      "type" : "library"
    },
    {
      "c99name" : "BacktraceTests",
      "module_type" : "SwiftTarget",
      "name" : "BacktraceTests",
      "path" : "Tests/BacktraceTests",
      "sources" : [
        "BacktraceTests+XCTest.swift",
        "BacktraceTests.swift"
      ],
      "target_dependencies" : [
        "Backtrace"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Backtrace",
      "module_type" : "SwiftTarget",
      "name" : "Backtrace",
      "path" : "Sources/Backtrace",
      "product_memberships" : [
        "Backtrace",
        "Sample"
      ],
      "sources" : [
        "Backtrace.swift",
        "Demangle.swift"
      ],
      "target_dependencies" : [
        "CBacktrace"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
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
[1/1] Compiling plugin Swift-DocC Preview
[2/2] Compiling plugin Swift-DocC
Building for debugging...
[2/21] Write swift-version-2F0A5646E1D333AE.txt
[2/21] Write sources
[2/21] Write Sample-entitlement.plist
[5/21] Compiling CBacktrace state.c
[6/21] Compiling CBacktrace atomic.c
[6/21] Compiling CBacktrace posix.c
[6/21] Compiling CBacktrace elf.c
[6/21] Compiling CBacktrace print.c
[6/21] Compiling CBacktrace dwarf.c
[6/21] Compiling CBacktrace mmapio.c
[6/21] Compiling CBacktrace mmap.c
[13/21] Write sources
[14/21] Compiling CBacktrace fileline.c
[14/21] Compiling CBacktrace backtrace.c
[16/21] Compiling CBacktrace sort.c
[17/21] Compiling CBacktrace simple.c
[19/24] Compiling Backtrace Demangle.swift
[20/24] Emitting module Backtrace
[21/24] Compiling Backtrace Backtrace.swift
[22/26] Emitting module Sample
[23/26] Compiling Sample main.swift
[23/26] Write Objects.LinkFileList
[24/26] Linking Sample
[25/26] Applying Sample
Build complete! (12.45s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-docc-plugin",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-docc-plugin"
    }
  ],
  "manifest_display_name" : "swift-backtrace",
  "name" : "swift-backtrace",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Backtrace",
      "targets" : [
        "Backtrace"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "Sample",
      "targets" : [
        "Sample"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Sample",
      "module_type" : "SwiftTarget",
      "name" : "Sample",
      "path" : "Sources/Sample",
      "product_memberships" : [
        "Sample"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "Backtrace"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "CBacktrace",
      "module_type" : "ClangTarget",
      "name" : "CBacktrace",
      "path" : "Sources/CBacktrace",
      "product_memberships" : [
        "Backtrace",
        "Sample"
      ],
      "sources" : [
        "atomic.c",
        "backtrace.c",
        "dwarf.c",
        "elf.c",
        "fileline.c",
        "mmap.c",
        "mmapio.c",
        "posix.c",
        "print.c",
        "simple.c",
        "sort.c",
        "state.c"
      ],
      "type" : "library"
    },
    {
      "c99name" : "BacktraceTests",
      "module_type" : "SwiftTarget",
      "name" : "BacktraceTests",
      "path" : "Tests/BacktraceTests",
      "sources" : [
        "BacktraceTests+XCTest.swift",
        "BacktraceTests.swift"
      ],
      "target_dependencies" : [
        "Backtrace"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Backtrace",
      "module_type" : "SwiftTarget",
      "name" : "Backtrace",
      "path" : "Sources/Backtrace",
      "product_memberships" : [
        "Backtrace",
        "Sample"
      ],
      "sources" : [
        "Backtrace.swift",
        "Demangle.swift"
      ],
      "target_dependencies" : [
        "CBacktrace"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
✅  Doc result (pending) reported
========================================
GenerateDocs
========================================
Generating docs at path:  $PWD/.docs/swift-server/swift-backtrace/1.3.5
Repository:               swift-server/swift-backtrace
Swift version used:       6.1
        .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.0.0"),
Target:                   Backtrace
Extracting symbol information for 'Backtrace'...
Finished extracting symbol information for 'Backtrace'. (0.46s)
Building documentation for 'Backtrace'...
Finished building documentation for 'Backtrace' (0.10s)
Generated documentation archive at:
  /Users/admin/builder/spi-builder-workspace/.docs/swift-server/swift-backtrace/1.3.5
Building for debugging...
[0/7] Write snippet-extract-tool-entitlement.plist
[1/8] Write sources
[4/8] Write swift-version-2F0A5646E1D333AE.txt
[6/53] Emitting module SymbolKit
[7/57] Compiling SymbolKit Identifier.swift
[8/57] Compiling SymbolKit KindIdentifier.swift
[9/57] Compiling SymbolKit Location.swift
[10/57] Compiling SymbolKit Mutability.swift
[11/57] Compiling SymbolKit Relationship.swift
[12/57] Compiling SymbolKit RelationshipKind.swift
[13/57] Compiling SymbolKit SourceOrigin.swift
[14/57] Compiling SymbolKit GenericConstraints.swift
[15/57] Compiling SymbolKit Swift.swift
[16/57] Compiling SymbolKit Mixin+Equals.swift
[17/57] Compiling SymbolKit Mixin+Hash.swift
[18/57] Compiling SymbolKit Mixin.swift
[19/57] Compiling SymbolKit LineList.swift
[20/57] Compiling SymbolKit Position.swift
[21/57] Compiling SymbolKit UnifiedSymbol+Encodable.swift
[22/57] Compiling SymbolKit UnifiedSymbol.swift
[23/57] Compiling SymbolKit UnifiedSymbolGraph+Encodable.swift
[24/57] Compiling SymbolKit UnifiedSymbolGraph.swift
[25/57] Compiling SymbolKit Symbol.swift
[26/57] Compiling SymbolKit SymbolKind.swift
[27/57] Compiling SymbolKit SymbolGraph.swift
[28/57] Compiling SymbolKit GraphCollector.swift
[29/57] Compiling SymbolKit SourceRange.swift
[30/57] Compiling SymbolKit Metadata.swift
[31/57] Compiling SymbolKit Module.swift
[32/57] Compiling SymbolKit OperatingSystem.swift
[33/57] Compiling SymbolKit Platform.swift
[34/57] Compiling SymbolKit Names.swift
[35/57] Compiling SymbolKit SPI.swift
[36/57] Compiling SymbolKit Snippet.swift
[37/57] Compiling SymbolKit Extension.swift
[38/57] Compiling SymbolKit SemanticVersion.swift
[39/57] Compiling SymbolKit AccessControl.swift
[40/57] Compiling SymbolKit Availability.swift
[41/57] Compiling SymbolKit AvailabilityItem.swift
[42/57] Compiling SymbolKit Domain.swift
[43/57] Compiling SymbolKit DeclarationFragments.swift
[44/57] Compiling SymbolKit Fragment.swift
[45/57] Compiling SymbolKit FragmentKind.swift
[46/57] Compiling SymbolKit FunctionParameter.swift
[47/57] Compiling SymbolKit FunctionSignature.swift
[48/57] Compiling SymbolKit GenericConstraint.swift
[49/57] Compiling SymbolKit GenericParameter.swift
[50/57] Compiling SymbolKit Generics.swift
[51/57] Compiling SymbolKit Namespace.swift
[52/57] Compiling Snippets SnippetParser.swift
[53/57] Emitting module Snippets
[54/57] Compiling Snippets Snippet.swift
[55/61] Compiling snippet_extract URL+Status.swift
[56/61] Compiling snippet_extract SymbolGraph+Snippet.swift
[57/61] Emitting module snippet_extract
[58/61] Compiling snippet_extract SnippetBuildCommand.swift
[58/61] Write Objects.LinkFileList
[59/61] Linking snippet-extract-tool
[60/61] Applying snippet-extract-tool
Build of product 'snippet-extract' complete! (4.98s)
Building for debugging...
[0/1] Write swift-version-2F0A5646E1D333AE.txt
[2/4] Compiling Backtrace Demangle.swift
[3/4] Compiling Backtrace Backtrace.swift
[4/4] Emitting module Backtrace
Build of target: 'Backtrace' complete! (0.39s)
      62
2	/Users/admin/builder/spi-builder-workspace/.docs/swift-server/swift-backtrace/1.3.5
✅  Doc result (uploading) reported
========================================
SyncDocs
========================================
Doc archive source directory: $PWD/.docs/swift-server/swift-backtrace/1.3.5
File count: 62
Doc size:   2.0MB
Preparing doc bundle ...
Uploading prod-swift-server-swift-backtrace-1.3.5-e88cb72c.zip to s3://spi-docs-inbox/prod-swift-server-swift-backtrace-1.3.5-e88cb72c.zip
Copying... [20%]
Copying... [40%]
Copying... [60%]
Copying... [80%]
Copying... [100%]
Copying... [100%]
Done.