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Build Information

Successful build of Units, reference main (eefd86), with Swift 6.1 for macOS (SPM) on 4 Jun 2025 06:06:34 UTC.

Swift 6 data race errors: 4

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: 4.63.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/NeedleInAJayStack/Units.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/NeedleInAJayStack/Units
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at eefd864 Merge pull request #18 from NeedleInAJayStack/ci/fix-publish-name
Cloned https://github.com/NeedleInAJayStack/Units.git
Revision (git rev-parse @):
eefd864e85a8dd181df83756a5aba2ca0cda7831
SUCCESS checkout https://github.com/NeedleInAJayStack/Units.git at main
Fetching https://github.com/apple/swift-argument-parser from cache
Fetched https://github.com/apple/swift-argument-parser from cache (1.07s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.2.1 (1.75s)
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 1.2.1
========================================
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": "units",
      "name": "Units",
      "url": "https://github.com/NeedleInAJayStack/Units.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Units",
      "dependencies": [
        {
          "identity": "swift-argument-parser",
          "name": "swift-argument-parser",
          "url": "https://github.com/apple/swift-argument-parser",
          "version": "1.5.1",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-argument-parser",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/NeedleInAJayStack/Units.git
[1/1067] Fetching units
Fetched https://github.com/NeedleInAJayStack/Units.git from cache (0.83s)
Fetching https://github.com/apple/swift-argument-parser from cache
Fetched https://github.com/apple/swift-argument-parser from cache (0.56s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 1.5.1 (1.11s)
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 1.5.1
Creating working copy for https://github.com/NeedleInAJayStack/Units.git
Working copy of https://github.com/NeedleInAJayStack/Units.git resolved at main (eefd864)
Found 1 product dependencies
  - swift-argument-parser
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/NeedleInAJayStack/Units.git
https://github.com/NeedleInAJayStack/Units.git
{
  "dependencies" : [
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.2.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "Units",
  "name" : "Units",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Units",
      "targets" : [
        "Units"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "unit",
      "targets" : [
        "CLI"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "UnitsTests",
      "module_type" : "SwiftTarget",
      "name" : "UnitsTests",
      "path" : "Tests/UnitsTests",
      "sources" : [
        "DefinitionTests.swift",
        "ExpressionTests.swift",
        "MeasurementTests.swift",
        "ParserTests.swift",
        "UnitTests.swift",
        "XCTest+Measurement.swift"
      ],
      "target_dependencies" : [
        "Units"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Units",
      "module_type" : "SwiftTarget",
      "name" : "Units",
      "path" : "Sources/Units",
      "product_memberships" : [
        "Units",
        "unit"
      ],
      "sources" : [
        "Expression.swift",
        "Measurement/Double+Measurement.swift",
        "Measurement/Int+Measurement.swift",
        "Measurement/Measurement.swift",
        "Parser.swift",
        "Quantity.swift",
        "Registry.swift",
        "Unit/DefaultUnits.swift",
        "Unit/DefinedUnit.swift",
        "Unit/Equations.swift",
        "Unit/Unit+DefaultUnits.swift",
        "Unit/Unit.swift",
        "UnitError.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "PerformanceTests",
      "module_type" : "SwiftTarget",
      "name" : "PerformanceTests",
      "path" : "Tests/PerformanceTests",
      "sources" : [
        "PerformanceTests.swift"
      ],
      "target_dependencies" : [
        "Units"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CLI",
      "module_type" : "SwiftTarget",
      "name" : "CLI",
      "path" : "Sources/CLI",
      "product_dependencies" : [
        "ArgumentParser"
      ],
      "product_memberships" : [
        "unit"
      ],
      "sources" : [
        "Convert.swift",
        "List.swift",
        "Unit.swift",
        "main.swift"
      ],
      "target_dependencies" : [
        "Units"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.4"
}
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 GenerateManual
Building for debugging...
[1/10] Write sources
[1/10] Write unit-entitlement.plist
[6/10] Write swift-version-2F0A5646E1D333AE.txt
[8/25] Compiling ArgumentParserToolInfo ToolInfo.swift
[9/25] Emitting module ArgumentParserToolInfo
[10/63] Compiling ArgumentParser AsyncParsableCommand.swift
[11/63] Compiling ArgumentParser CommandConfiguration.swift
[12/63] Compiling ArgumentParser EnumerableFlag.swift
[13/63] Compiling ArgumentParser ExpressibleByArgument.swift
[14/67] Emitting module Units
/Users/admin/builder/spi-builder-workspace/Sources/Units/Registry.swift:5:16: warning: static property 'instance' is not concurrency-safe because non-'Sendable' type 'Registry' may have shared mutable state; this is an error in the Swift 6 language mode
  1 | /// UnitRegistry defines a structure that contains all defined units. This ensures
  2 | /// that we are able to parse to and from unit symbol representations.
  3 | class Registry {
    |       `- note: class 'Registry' does not conform to the 'Sendable' protocol
  4 |     // TODO: Should we eliminate this singleton and make clients keep track?
  5 |     static let instance = Registry()
    |                |- warning: static property 'instance' is not concurrency-safe because non-'Sendable' type 'Registry' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'instance' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  6 |
  7 |     // Quick access based on symbol
[15/68] Emitting module ArgumentParser
[16/68] Compiling Units UnitError.swift
[17/68] Compiling ArgumentParser Flag.swift
[18/68] Compiling ArgumentParser NameSpecification.swift
[19/68] Compiling ArgumentParser Option.swift
[20/68] Compiling ArgumentParser OptionGroup.swift
[21/68] Compiling ArgumentParser ArgumentHelp.swift
[22/68] Compiling ArgumentParser ArgumentVisibility.swift
[23/68] Compiling ArgumentParser CompletionKind.swift
[24/68] Compiling ArgumentParser Errors.swift
[25/68] Compiling ArgumentParser ParsableArguments.swift
[26/68] Compiling ArgumentParser ParsableArgumentsValidation.swift
[27/68] Compiling ArgumentParser ParsableCommand.swift
[28/68] Compiling ArgumentParser ArgumentDecoder.swift
[29/68] Compiling ArgumentParser ArgumentDefinition.swift
[30/68] Compiling ArgumentParser ArgumentSet.swift
[31/68] Compiling ArgumentParser CommandParser.swift
[32/68] Compiling ArgumentParser InputKey.swift
[33/68] Compiling ArgumentParser BashCompletionsGenerator.swift
[34/68] Compiling ArgumentParser CompletionsGenerator.swift
[35/68] Compiling ArgumentParser FishCompletionsGenerator.swift
[36/68] Compiling ArgumentParser ZshCompletionsGenerator.swift
[37/68] Compiling ArgumentParser Argument.swift
[38/68] Compiling ArgumentParser InputOrigin.swift
[39/68] Compiling ArgumentParser Name.swift
[40/68] Compiling ArgumentParser Parsed.swift
[41/68] Compiling ArgumentParser ParsedValues.swift
[42/68] Compiling ArgumentParser Platform.swift
[43/68] Compiling ArgumentParser SequenceExtensions.swift
[44/68] Compiling ArgumentParser StringExtensions.swift
[45/68] Compiling ArgumentParser Tree.swift
[46/68] Compiling Units Equations.swift
[47/68] Compiling Units Unit+DefaultUnits.swift
[50/68] Compiling Units Unit.swift
[55/68] Compiling Units DefinedUnit.swift
[56/68] Compiling Units DefaultUnits.swift
[57/68] Compiling Units Registry.swift
/Users/admin/builder/spi-builder-workspace/Sources/Units/Registry.swift:5:16: warning: static property 'instance' is not concurrency-safe because non-'Sendable' type 'Registry' may have shared mutable state; this is an error in the Swift 6 language mode
  1 | /// UnitRegistry defines a structure that contains all defined units. This ensures
  2 | /// that we are able to parse to and from unit symbol representations.
  3 | class Registry {
    |       `- note: class 'Registry' does not conform to the 'Sendable' protocol
  4 |     // TODO: Should we eliminate this singleton and make clients keep track?
  5 |     static let instance = Registry()
    |                |- warning: static property 'instance' is not concurrency-safe because non-'Sendable' type 'Registry' may have shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: add '@MainActor' to make static property 'instance' part of global actor 'MainActor'
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
  6 |
  7 |     // Quick access based on symbol
[58/68] Compiling ArgumentParser ParserError.swift
[59/68] Compiling ArgumentParser SplitArguments.swift
[60/68] Compiling ArgumentParser DumpHelpGenerator.swift
[61/68] Compiling ArgumentParser HelpCommand.swift
[62/68] Compiling ArgumentParser HelpGenerator.swift
[63/68] Compiling ArgumentParser MessageInfo.swift
[64/68] Compiling ArgumentParser UsageGenerator.swift
[65/68] Compiling ArgumentParser CollectionExtensions.swift
[66/73] Compiling CLI main.swift
[67/73] Compiling CLI Unit.swift
/Users/admin/builder/spi-builder-workspace/Sources/CLI/Unit.swift:4:16: warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2 |
3 | struct Unit: ParsableCommand {
4 |     static var configuration = CommandConfiguration(
  |                |- warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  |                |- note: convert 'configuration' to a 'let' constant to make 'Sendable' shared state immutable
  |                |- note: add '@MainActor' to make static property 'configuration' part of global actor 'MainActor'
  |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
5 |         abstract: "A utility for performing unit conversions.",
6 |         subcommands: [Convert.self, List.self]
[68/73] Compiling CLI List.swift
/Users/admin/builder/spi-builder-workspace/Sources/CLI/List.swift:5:16: warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 3 |
 4 | struct List: ParsableCommand {
 5 |     static var configuration = CommandConfiguration(
   |                |- warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: convert 'configuration' to a 'let' constant to make 'Sendable' shared state immutable
   |                |- note: add '@MainActor' to make static property 'configuration' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 6 |         abstract: "Print a table of the available units, their symbols, and their dimensionality."
 7 |     )
[69/73] Emitting module CLI
/Users/admin/builder/spi-builder-workspace/Sources/CLI/Convert.swift:5:16: warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 3 |
 4 | struct Convert: ParsableCommand {
 5 |     static var configuration = CommandConfiguration(
   |                |- warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: convert 'configuration' to a 'let' constant to make 'Sendable' shared state immutable
   |                |- note: add '@MainActor' to make static property 'configuration' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 6 |         abstract: "Convert a measurement expression to a specified unit.",
 7 |         discussion: """
/Users/admin/builder/spi-builder-workspace/Sources/CLI/Convert.swift:42:1: warning: extension declares a conformance of imported type 'Expression' to imported protocol 'ExpressibleByArgument'; this will not behave correctly if the owners of 'Units' introduce this conformance in the future
40 | }
41 |
42 | extension Expression: ExpressibleByArgument {
   | |- warning: extension declares a conformance of imported type 'Expression' to imported protocol 'ExpressibleByArgument'; this will not behave correctly if the owners of 'Units' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
43 |     public convenience init?(argument: String) {
44 |         let argument = argument.replacingOccurrences(of: "_", with: " ")
/Users/admin/builder/spi-builder-workspace/Sources/CLI/Convert.swift:49:1: warning: extension declares a conformance of imported type 'Unit' to imported protocol 'ExpressibleByArgument'; this will not behave correctly if the owners of 'Units' introduce this conformance in the future
47 | }
48 |
49 | extension Units.Unit: ExpressibleByArgument {
   | |- warning: extension declares a conformance of imported type 'Unit' to imported protocol 'ExpressibleByArgument'; this will not behave correctly if the owners of 'Units' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
50 |     public init?(argument: String) {
51 |         if let unit = try? Self(fromName: argument) {
/Users/admin/builder/spi-builder-workspace/Sources/CLI/List.swift:5:16: warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 3 |
 4 | struct List: ParsableCommand {
 5 |     static var configuration = CommandConfiguration(
   |                |- warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: convert 'configuration' to a 'let' constant to make 'Sendable' shared state immutable
   |                |- note: add '@MainActor' to make static property 'configuration' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 6 |         abstract: "Print a table of the available units, their symbols, and their dimensionality."
 7 |     )
/Users/admin/builder/spi-builder-workspace/Sources/CLI/Unit.swift:4:16: warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
2 |
3 | struct Unit: ParsableCommand {
4 |     static var configuration = CommandConfiguration(
  |                |- warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
  |                |- note: convert 'configuration' to a 'let' constant to make 'Sendable' shared state immutable
  |                |- note: add '@MainActor' to make static property 'configuration' part of global actor 'MainActor'
  |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
5 |         abstract: "A utility for performing unit conversions.",
6 |         subcommands: [Convert.self, List.self]
[70/73] Compiling CLI Convert.swift
/Users/admin/builder/spi-builder-workspace/Sources/CLI/Convert.swift:5:16: warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 3 |
 4 | struct Convert: ParsableCommand {
 5 |     static var configuration = CommandConfiguration(
   |                |- warning: static property 'configuration' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: convert 'configuration' to a 'let' constant to make 'Sendable' shared state immutable
   |                |- note: add '@MainActor' to make static property 'configuration' part of global actor 'MainActor'
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 6 |         abstract: "Convert a measurement expression to a specified unit.",
 7 |         discussion: """
/Users/admin/builder/spi-builder-workspace/Sources/CLI/Convert.swift:42:1: warning: extension declares a conformance of imported type 'Expression' to imported protocol 'ExpressibleByArgument'; this will not behave correctly if the owners of 'Units' introduce this conformance in the future
40 | }
41 |
42 | extension Expression: ExpressibleByArgument {
   | |- warning: extension declares a conformance of imported type 'Expression' to imported protocol 'ExpressibleByArgument'; this will not behave correctly if the owners of 'Units' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
43 |     public convenience init?(argument: String) {
44 |         let argument = argument.replacingOccurrences(of: "_", with: " ")
/Users/admin/builder/spi-builder-workspace/Sources/CLI/Convert.swift:49:1: warning: extension declares a conformance of imported type 'Unit' to imported protocol 'ExpressibleByArgument'; this will not behave correctly if the owners of 'Units' introduce this conformance in the future
47 | }
48 |
49 | extension Units.Unit: ExpressibleByArgument {
   | |- warning: extension declares a conformance of imported type 'Unit' to imported protocol 'ExpressibleByArgument'; this will not behave correctly if the owners of 'Units' introduce this conformance in the future
   | `- note: add '@retroactive' to silence this warning
50 |     public init?(argument: String) {
51 |         if let unit = try? Self(fromName: argument) {
[70/73] Write Objects.LinkFileList
[71/73] Linking unit
[72/73] Applying unit
Build complete! (7.68s)
Build complete.
{
  "dependencies" : [
    {
      "identity" : "swift-argument-parser",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.2.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-argument-parser"
    }
  ],
  "manifest_display_name" : "Units",
  "name" : "Units",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
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  "products" : [
    {
      "name" : "Units",
      "targets" : [
        "Units"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "unit",
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        "CLI"
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  "targets" : [
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      "c99name" : "UnitsTests",
      "module_type" : "SwiftTarget",
      "name" : "UnitsTests",
      "path" : "Tests/UnitsTests",
      "sources" : [
        "DefinitionTests.swift",
        "ExpressionTests.swift",
        "MeasurementTests.swift",
        "ParserTests.swift",
        "UnitTests.swift",
        "XCTest+Measurement.swift"
      ],
      "target_dependencies" : [
        "Units"
      ],
      "type" : "test"
    },
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      "c99name" : "Units",
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      "path" : "Sources/Units",
      "product_memberships" : [
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      "sources" : [
        "Expression.swift",
        "Measurement/Double+Measurement.swift",
        "Measurement/Int+Measurement.swift",
        "Measurement/Measurement.swift",
        "Parser.swift",
        "Quantity.swift",
        "Registry.swift",
        "Unit/DefaultUnits.swift",
        "Unit/DefinedUnit.swift",
        "Unit/Equations.swift",
        "Unit/Unit+DefaultUnits.swift",
        "Unit/Unit.swift",
        "UnitError.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "PerformanceTests",
      "module_type" : "SwiftTarget",
      "name" : "PerformanceTests",
      "path" : "Tests/PerformanceTests",
      "sources" : [
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      "target_dependencies" : [
        "Units"
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      "type" : "test"
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    {
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      "product_memberships" : [
        "unit"
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      "sources" : [
        "Convert.swift",
        "List.swift",
        "Unit.swift",
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      ],
      "target_dependencies" : [
        "Units"
      ],
      "type" : "executable"
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  ],
  "tools_version" : "5.4"
}
Done.