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Build Information

Successful build of Benchmarking, reference v1.0.0 (6a224c), with Swift 6.4 for macOS (SPM) on 17 Sep 2026 22:31:46 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64

Build Log

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RunAll
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Builder version: 5.1.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/attaswift/Benchmarking.git
Reference: v1.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/attaswift/Benchmarking
 * tag               v1.0.0     -> FETCH_HEAD
HEAD is now at 6a224c1 Update README.md
Cloned https://github.com/attaswift/Benchmarking.git
Revision (git rev-parse @):
6a224c19f21d5e28198f74f5c679c0c55335688c
SUCCESS checkout https://github.com/attaswift/Benchmarking.git at v1.0.0
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Build
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Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/attaswift/Benchmarking.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Pre-planning 1 / 125]
[Planning deferred tasks]
[31 / 56]
[44 / 70] OptionParser
[48 / 70] OptionParser
[60 / 80] Benchmarking
[61 / 80] Benchmarking
[64 / 80] Benchmarking
[69 / 80] Benchmarking
[77 / 80] Benchmarking
[80 / 80] Benchmarking-product
Build complete! (7.59 sec)
Fetching https://github.com/attaswift/OptionParser
[1/82] Fetching optionparser
Fetched https://github.com/attaswift/OptionParser (1.20s)
Computing version for https://github.com/attaswift/OptionParser
Computed https://github.com/attaswift/OptionParser at 1.0.0 (1.86s)
Creating working copy for https://github.com/attaswift/OptionParser
Working copy of https://github.com/attaswift/OptionParser resolved at 1.0.0
/Users/admin/builder/spi-builder-workspace/Benchmarking/Run.swift:9:1: warning: extension declares a conformance of imported type 'OutputFormat' to imported protocol 'OptionValue'; this will not behave correctly if the owners of 'BenchmarkIPC' introduce this conformance in the future
  7 | import BenchmarkIPC
  8 |
  9 | extension RunOptions.OutputFormat: OptionValue {}
    | |- warning: extension declares a conformance of imported type 'OutputFormat' to imported protocol 'OptionValue'; this will not behave correctly if the owners of 'BenchmarkIPC' introduce this conformance in the future
    | `- note: add '@retroactive' to silence this warning
 10 |
 11 | struct AttabenchOptions {
/Users/admin/builder/spi-builder-workspace/Benchmarking/Shuffle.swift:31:40: warning: 'IndexDistance' is deprecated: all index distances are now of type Int [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
29 | }
30 |
31 | extension RandomAccessCollection where IndexDistance: FixedWidthInteger {
   |                                        `- warning: 'IndexDistance' is deprecated: all index distances are now of type Int [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
32 |     public func randomElement() -> Element {
33 |         precondition(count > 0)
/Users/admin/builder/spi-builder-workspace/Benchmarking/Shuffle.swift:40:65: warning: 'IndexDistance' is deprecated: all index distances are now of type Int [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
38 | }
39 |
40 | extension RandomAccessCollection where Self: MutableCollection, IndexDistance: FixedWidthInteger {
   |                                                                 `- warning: 'IndexDistance' is deprecated: all index distances are now of type Int [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
41 |     public mutating func shuffle() {
42 |         for i in indices {
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
/Users/admin/builder/spi-builder-workspace/Benchmarking/Shuffle.swift:31:40: warning: 'IndexDistance' is deprecated: all index distances are now of type Int [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
29 | }
30 |
31 | extension RandomAccessCollection where IndexDistance: FixedWidthInteger {
   |                                        `- warning: 'IndexDistance' is deprecated: all index distances are now of type Int [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
32 |     public func randomElement() -> Element {
33 |         precondition(count > 0)
/Users/admin/builder/spi-builder-workspace/Benchmarking/Shuffle.swift:40:65: warning: 'IndexDistance' is deprecated: all index distances are now of type Int [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
38 | }
39 |
40 | extension RandomAccessCollection where Self: MutableCollection, IndexDistance: FixedWidthInteger {
   |                                                                 `- warning: 'IndexDistance' is deprecated: all index distances are now of type Int [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
41 |     public mutating func shuffle() {
42 |         for i in indices {
/Users/admin/builder/spi-builder-workspace/Benchmarking/Shuffle.swift:34:27: warning: 'IndexDistance' is deprecated: all index distances are now of type Int [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
32 |     public func randomElement() -> Element {
33 |         precondition(count > 0)
34 |         let offset = Self.IndexDistance.random(below: count)
   |                           `- warning: 'IndexDistance' is deprecated: all index distances are now of type Int [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
35 |         let index = self.index(self.startIndex, offsetBy: offset)
36 |         return self[index]
/Users/admin/builder/spi-builder-workspace/Benchmarking/Shuffle.swift:43:26: warning: 'IndexDistance' is deprecated: all index distances are now of type Int [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
41 |     public mutating func shuffle() {
42 |         for i in indices {
43 |             let offset = IndexDistance.random(below: self.distance(from: i, to: self.endIndex))
   |                          `- warning: 'IndexDistance' is deprecated: all index distances are now of type Int [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration\DeprecatedDeclaration]8;;\]
44 |             let j = self.index(i, offsetBy: offset)
45 |             if i != j {
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
/Users/admin/builder/spi-builder-workspace/Benchmarking/Run.swift:9:1: warning: extension declares a conformance of imported type 'OutputFormat' to imported protocol 'OptionValue'; this will not behave correctly if the owners of 'BenchmarkIPC' introduce this conformance in the future
  7 | import BenchmarkIPC
  8 |
  9 | extension RunOptions.OutputFormat: OptionValue {}
    | |- warning: extension declares a conformance of imported type 'OutputFormat' to imported protocol 'OptionValue'; this will not behave correctly if the owners of 'BenchmarkIPC' introduce this conformance in the future
    | `- note: add '@retroactive' to silence this warning
 10 |
 11 | struct AttabenchOptions {
/Users/admin/builder/spi-builder-workspace/Benchmarking/Run.swift:70:13: warning: variable 'sizes' was never mutated; consider changing to 'let' constant [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/variable-never-mutated\VariableNeverMutated]8;;\]
 68 |             tasks = taskTitles.map { self.tasks[$0]! }
 69 |         }
 70 |         var sizes = options.sizes
    |             `- warning: variable 'sizes' was never mutated; consider changing to 'let' constant [#]8;;https://docs.swift.org/compiler/documentation/diagnostics/variable-never-mutated\VariableNeverMutated]8;;\]
 71 |         guard !sizes.isEmpty else {
 72 |             throw OptionError("Need at least one size")
[#VariableNeverMutated]: <https://docs.swift.org/compiler/documentation/diagnostics/variable-never-mutated>
Build complete.
{
  "dependencies" : [
    {
      "identity" : "optionparser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/attaswift/OptionParser"
    }
  ],
  "manifest_display_name" : "Benchmarking",
  "name" : "Benchmarking",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Benchmarking",
      "targets" : [
        "Benchmarking",
        "BenchmarkIPC"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "swift_languages_versions" : [
    "4"
  ],
  "targets" : [
    {
      "c99name" : "Benchmarking",
      "module_type" : "SwiftTarget",
      "name" : "Benchmarking",
      "path" : "Benchmarking",
      "product_dependencies" : [
        "OptionParser"
      ],
      "product_memberships" : [
        "Benchmarking"
      ],
      "sources" : [
        "Benchmark.swift",
        "Complain.swift",
        "InputGenerator.swift",
        "Noop.swift",
        "Output.swift",
        "Run.swift",
        "Shuffle.swift",
        "Timer.swift"
      ],
      "target_dependencies" : [
        "BenchmarkIPC"
      ],
      "type" : "library"
    },
    {
      "c99name" : "BenchmarkIPC",
      "module_type" : "SwiftTarget",
      "name" : "BenchmarkIPC",
      "path" : "BenchmarkIPC",
      "product_memberships" : [
        "Benchmarking"
      ],
      "sources" : [
        "BenchmarkIPC.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Done.