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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 Multiaddr with Swift 6.1 for visionOS using Xcode 16.3.

Build Command

Build command unavailable

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/lukereichold/swift-multiaddr.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/lukereichold/swift-multiaddr
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 4a41d7f Update README.md
Cloned https://github.com/lukereichold/swift-multiaddr.git
Revision (git rev-parse @):
4a41d7f3a7c752cd7ac8e1f464da96518cf03cbb
SUCCESS checkout https://github.com/lukereichold/swift-multiaddr.git at master
========================================
Build
========================================
Selected platform:         visionOS
Swift version:             6.1
Building package at path:  $PWD
https://github.com/lukereichold/swift-multiaddr.git
https://github.com/lukereichold/swift-multiaddr.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Multiaddr",
  "name" : "Multiaddr",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "12.0"
    },
    {
      "name" : "macos",
      "version" : "10.14"
    }
  ],
  "products" : [
    {
      "name" : "Multiaddr",
      "targets" : [
        "Multiaddr"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MultiaddrTests",
      "module_type" : "SwiftTarget",
      "name" : "MultiaddrTests",
      "path" : "Tests/MultiaddrTests",
      "sources" : [
        "MultiaddrTests.swift",
        "ProtocolTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Multiaddr"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Multiaddr",
      "module_type" : "SwiftTarget",
      "name" : "Multiaddr",
      "path" : "Sources/Multiaddr",
      "product_memberships" : [
        "Multiaddr"
      ],
      "sources" : [
        "Address.swift",
        "Extensions/Data+Multiaddr.swift",
        "Extensions/Error+Multiaddr.swift",
        "Multiaddr.swift",
        "Protocol Helpers/Base32.swift",
        "Protocol Helpers/Base58.swift",
        "Protocol Helpers/DNS.swift",
        "Protocol Helpers/IPFS.swift",
        "Protocol Helpers/IPv4.swift",
        "Protocol Helpers/IPv6.swift",
        "Protocol Helpers/Onion.swift",
        "Protocol.swift",
        "Varint/BinaryEncoder.swift",
        "Varint/Varint.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
resolved source packages:
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Multiaddr",
  "name" : "Multiaddr",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "12.0"
    },
    {
      "name" : "macos",
      "version" : "10.14"
    }
  ],
  "products" : [
    {
      "name" : "Multiaddr",
      "targets" : [
        "Multiaddr"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "MultiaddrTests",
      "module_type" : "SwiftTarget",
      "name" : "MultiaddrTests",
      "path" : "Tests/MultiaddrTests",
      "sources" : [
        "MultiaddrTests.swift",
        "ProtocolTests.swift",
        "XCTestManifests.swift"
      ],
      "target_dependencies" : [
        "Multiaddr"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Multiaddr",
      "module_type" : "SwiftTarget",
      "name" : "Multiaddr",
      "path" : "Sources/Multiaddr",
      "product_memberships" : [
        "Multiaddr"
      ],
      "sources" : [
        "Address.swift",
        "Extensions/Data+Multiaddr.swift",
        "Extensions/Error+Multiaddr.swift",
        "Multiaddr.swift",
        "Protocol Helpers/Base32.swift",
        "Protocol Helpers/Base58.swift",
        "Protocol Helpers/DNS.swift",
        "Protocol Helpers/IPFS.swift",
        "Protocol Helpers/IPv4.swift",
        "Protocol Helpers/IPv6.swift",
        "Protocol Helpers/Onion.swift",
        "Protocol.swift",
        "Varint/BinaryEncoder.swift",
        "Varint/Varint.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.0"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "Multiaddr",
    "schemes" : [
      "Multiaddr"
    ],
    "targets" : [
      "Multiaddr",
      "MultiaddrPackageDescription",
      "MultiaddrPackageTests",
      "MultiaddrTests"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Multiaddr -destination generic/platform=xrOS OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
Command line invocation:
    /Applications/Xcode-16.3.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme Multiaddr -destination generic/platform=xrOS "OTHER_SWIFT_FLAGS=-stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures"
Build settings from command line:
    OTHER_SWIFT_FLAGS = -stats-output-dir .stats -strict-concurrency=complete -enable-upcoming-feature StrictConcurrency -enable-upcoming-feature DisableOutwardActorInference -enable-upcoming-feature GlobalActorIsolatedTypesUsability -enable-upcoming-feature InferSendableFromCaptures
2025-04-24 19:37:01.102 xcodebuild[574:3235] Writing error result bundle to /var/folders/5k/5yc19ymj0jqd5v0zvgfqz0xw0000gn/T/ResultBundle_2025-24-04_19-37-0001.xcresult
xcodebuild: error: Unable to find a destination matching the provided destination specifier:
		{ generic:1, platform:xrOS }
	Available destinations for the "Multiaddr" scheme:
		{ platform:macOS, arch:arm64, id:2f1ba8141191548551d1434ef1bd501f06c30bec, name:My Mac }
		{ platform:macOS, arch:x86_64, id:2f1ba8141191548551d1434ef1bd501f06c30bec, name:My Mac }
		{ platform:iOS, id:dvtdevice-DVTiPhonePlaceholder-iphoneos:placeholder, name:Any iOS Device }
		{ platform:iOS Simulator, id:dvtdevice-DVTiOSDeviceSimulatorPlaceholder-iphonesimulator:placeholder, name:Any iOS Simulator Device }
		{ platform:macOS, name:Any Mac }
		{ platform:tvOS, id:dvtdevice-DVTiOSDevicePlaceholder-appletvos:placeholder, name:Any tvOS Device }
		{ platform:tvOS Simulator, id:dvtdevice-DVTiOSDeviceSimulatorPlaceholder-appletvsimulator:placeholder, name:Any tvOS Simulator Device }
		{ platform:watchOS, id:dvtdevice-DVTiOSDevicePlaceholder-watchos:placeholder, name:Any watchOS Device }
		{ platform:watchOS Simulator, id:dvtdevice-DVTiOSDeviceSimulatorPlaceholder-watchsimulator:placeholder, name:Any watchOS Simulator Device }
INFRASTRUCTURE ERROR (status: destinationUnavailable