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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-asn1, reference main (bb75fd), with Swift 6.1 for macOS (SPM) on 29 Apr 2025 17:29:38 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: 4.61.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/apple/swift-asn1.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/apple/swift-asn1
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at bb75fd8 Drop Swift 5.9 (#102)
Cloned https://github.com/apple/swift-asn1.git
Revision (git rev-parse @):
bb75fd81b3dfed3752857dea7b369634beb88f1b
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/apple/swift-asn1.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/apple/swift-asn1.git
https://github.com/apple/swift-asn1.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "swift-asn1",
  "name" : "swift-asn1",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftASN1",
      "targets" : [
        "SwiftASN1"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftASN1Tests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftASN1Tests",
      "path" : "Tests/SwiftASN1Tests",
      "sources" : [
        "ASN1StringTests.swift",
        "ASN1Tests.swift",
        "GeneralizedTimeTests.swift",
        "Test Helper Types/CMSContentInfo.swift",
        "Test Helper Types/ECDSASignature.swift",
        "Test Helper Types/PKCS8PrivateKey.swift",
        "Test Helper Types/SEC1PrivateKey.swift",
        "Test Helper Types/SubjectPublicKeyInfo.swift",
        "UTCTimeTests.swift"
      ],
      "target_dependencies" : [
        "SwiftASN1"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftASN1",
      "module_type" : "SwiftTarget",
      "name" : "SwiftASN1",
      "path" : "Sources/SwiftASN1",
      "product_memberships" : [
        "SwiftASN1"
      ],
      "sources" : [
        "ASN1.swift",
        "BER.swift",
        "Basic ASN1 Types/ASN1Any.swift",
        "Basic ASN1 Types/ASN1BitString.swift",
        "Basic ASN1 Types/ASN1Boolean.swift",
        "Basic ASN1 Types/ASN1Identifier.swift",
        "Basic ASN1 Types/ASN1Integer.swift",
        "Basic ASN1 Types/ASN1Null.swift",
        "Basic ASN1 Types/ASN1OctetString.swift",
        "Basic ASN1 Types/ASN1Strings.swift",
        "Basic ASN1 Types/ArraySliceBigint.swift",
        "Basic ASN1 Types/GeneralizedTime.swift",
        "Basic ASN1 Types/ObjectIdentifier.swift",
        "Basic ASN1 Types/PEMDocument.swift",
        "Basic ASN1 Types/TimeUtilities.swift",
        "Basic ASN1 Types/UTCTime.swift",
        "DER.swift",
        "Errors.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.10"
}
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
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-2F0A5646E1D333AE.txt
[3/20] Compiling SwiftASN1 DER.swift
[4/21] Compiling SwiftASN1 ASN1Any.swift
[5/21] Compiling SwiftASN1 ASN1BitString.swift
[6/21] Emitting module SwiftASN1
[7/21] Compiling SwiftASN1 ASN1.swift
[8/21] Compiling SwiftASN1 BER.swift
[9/21] Compiling SwiftASN1 ArraySliceBigint.swift
[10/21] Compiling SwiftASN1 GeneralizedTime.swift
[11/21] Compiling SwiftASN1 ASN1Integer.swift
[12/21] Compiling SwiftASN1 ASN1Null.swift
[13/21] Compiling SwiftASN1 TimeUtilities.swift
[14/21] Compiling SwiftASN1 UTCTime.swift
[15/21] Compiling SwiftASN1 Errors.swift
[16/21] Compiling SwiftASN1 ASN1Boolean.swift
[17/21] Compiling SwiftASN1 ASN1Identifier.swift
[18/21] Compiling SwiftASN1 ASN1OctetString.swift
[19/21] Compiling SwiftASN1 ASN1Strings.swift
[20/21] Compiling SwiftASN1 ObjectIdentifier.swift
[21/21] Compiling SwiftASN1 PEMDocument.swift
Build complete! (5.27s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "swift-asn1",
  "name" : "swift-asn1",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftASN1",
      "targets" : [
        "SwiftASN1"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftASN1Tests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftASN1Tests",
      "path" : "Tests/SwiftASN1Tests",
      "sources" : [
        "ASN1StringTests.swift",
        "ASN1Tests.swift",
        "GeneralizedTimeTests.swift",
        "Test Helper Types/CMSContentInfo.swift",
        "Test Helper Types/ECDSASignature.swift",
        "Test Helper Types/PKCS8PrivateKey.swift",
        "Test Helper Types/SEC1PrivateKey.swift",
        "Test Helper Types/SubjectPublicKeyInfo.swift",
        "UTCTimeTests.swift"
      ],
      "target_dependencies" : [
        "SwiftASN1"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftASN1",
      "module_type" : "SwiftTarget",
      "name" : "SwiftASN1",
      "path" : "Sources/SwiftASN1",
      "product_memberships" : [
        "SwiftASN1"
      ],
      "sources" : [
        "ASN1.swift",
        "BER.swift",
        "Basic ASN1 Types/ASN1Any.swift",
        "Basic ASN1 Types/ASN1BitString.swift",
        "Basic ASN1 Types/ASN1Boolean.swift",
        "Basic ASN1 Types/ASN1Identifier.swift",
        "Basic ASN1 Types/ASN1Integer.swift",
        "Basic ASN1 Types/ASN1Null.swift",
        "Basic ASN1 Types/ASN1OctetString.swift",
        "Basic ASN1 Types/ASN1Strings.swift",
        "Basic ASN1 Types/ArraySliceBigint.swift",
        "Basic ASN1 Types/GeneralizedTime.swift",
        "Basic ASN1 Types/ObjectIdentifier.swift",
        "Basic ASN1 Types/PEMDocument.swift",
        "Basic ASN1 Types/TimeUtilities.swift",
        "Basic ASN1 Types/UTCTime.swift",
        "DER.swift",
        "Errors.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.10"
}
Done.