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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 HTTP, reference 3.4.0 (0464b7), with Swift 6.1 for macOS (SPM) on 26 Apr 2025 09:45:39 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/vapor/http.git
Reference: 3.4.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/vapor/http
 * tag               3.4.0      -> FETCH_HEAD
HEAD is now at 0464b71 SameSite Attribute support none, default = lax (#376)
Cloned https://github.com/vapor/http.git
Revision (git rev-parse @):
0464b715a4b59f54078bcf7a4b424767b03db5a5
SUCCESS checkout https://github.com/vapor/http.git at 3.4.0
Fetching https://github.com/vapor/core.git
Fetching https://github.com/apple/swift-nio.git from cache
Fetching https://github.com/apple/swift-nio-ssl.git from cache
[1/20143] Fetching core
Fetched https://github.com/apple/swift-nio-ssl.git from cache (0.95s)
Fetched https://github.com/vapor/core.git from cache (1.44s)
Fetched https://github.com/apple/swift-nio.git from cache (1.44s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 1.14.4 (2.09s)
Fetching https://github.com/apple/swift-nio-zlib-support.git
[1/15] Fetching swift-nio-zlib-support
Fetched https://github.com/apple/swift-nio-zlib-support.git from cache (0.54s)
Computing version for https://github.com/apple/swift-nio-zlib-support.git
Computed https://github.com/apple/swift-nio-zlib-support.git at 1.0.0 (1.15s)
Computing version for https://github.com/apple/swift-nio-ssl.git
Computed https://github.com/apple/swift-nio-ssl.git at 1.4.0 (0.60s)
Fetching https://github.com/apple/swift-nio-ssl-support.git
[1/16] Fetching swift-nio-ssl-support
Fetched https://github.com/apple/swift-nio-ssl-support.git from cache (0.51s)
Computing version for https://github.com/apple/swift-nio-ssl-support.git
Computed https://github.com/apple/swift-nio-ssl-support.git at 1.0.0 (1.10s)
Computing version for https://github.com/vapor/core.git
Computed https://github.com/vapor/core.git at 3.10.1 (0.59s)
Creating working copy for https://github.com/vapor/core.git
Working copy of https://github.com/vapor/core.git resolved at 3.10.1
Creating working copy for https://github.com/apple/swift-nio-zlib-support.git
Working copy of https://github.com/apple/swift-nio-zlib-support.git resolved at 1.0.0
Creating working copy for https://github.com/apple/swift-nio-ssl-support.git
Working copy of https://github.com/apple/swift-nio-ssl-support.git resolved at 1.0.0
Creating working copy for https://github.com/apple/swift-nio-ssl.git
Working copy of https://github.com/apple/swift-nio-ssl.git resolved at 1.4.0
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 1.14.4
========================================
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": "http",
      "name": "HTTP",
      "url": "https://github.com/vapor/http.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/http",
      "dependencies": [
        {
          "identity": "core",
          "name": "Core",
          "url": "https://github.com/vapor/core.git",
          "version": "3.10.1",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/core",
          "dependencies": [
            {
              "identity": "swift-nio",
              "name": "swift-nio",
              "url": "https://github.com/apple/swift-nio.git",
              "version": "1.14.4",
              "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-nio",
              "dependencies": [
                {
                  "identity": "swift-nio-zlib-support",
                  "name": "swift-nio-zlib-support",
                  "url": "https://github.com/apple/swift-nio-zlib-support.git",
                  "version": "1.0.0",
                  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-nio-zlib-support",
                  "dependencies": [
                  ]
                }
              ]
            }
          ]
        },
        {
          "identity": "swift-nio",
          "name": "swift-nio",
          "url": "https://github.com/apple/swift-nio.git",
          "version": "1.14.4",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-nio",
          "dependencies": [
            {
              "identity": "swift-nio-zlib-support",
              "name": "swift-nio-zlib-support",
              "url": "https://github.com/apple/swift-nio-zlib-support.git",
              "version": "1.0.0",
              "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-nio-zlib-support",
              "dependencies": [
              ]
            }
          ]
        },
        {
          "identity": "swift-nio-ssl",
          "name": "swift-nio-ssl",
          "url": "https://github.com/apple/swift-nio-ssl.git",
          "version": "1.4.0",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-nio-ssl",
          "dependencies": [
            {
              "identity": "swift-nio",
              "name": "swift-nio",
              "url": "https://github.com/apple/swift-nio.git",
              "version": "1.14.4",
              "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-nio",
              "dependencies": [
                {
                  "identity": "swift-nio-zlib-support",
                  "name": "swift-nio-zlib-support",
                  "url": "https://github.com/apple/swift-nio-zlib-support.git",
                  "version": "1.0.0",
                  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-nio-zlib-support",
                  "dependencies": [
                  ]
                }
              ]
            },
            {
              "identity": "swift-nio-ssl-support",
              "name": "swift-nio-ssl-support",
              "url": "https://github.com/apple/swift-nio-ssl-support.git",
              "version": "1.0.0",
              "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-nio-ssl-support",
              "dependencies": [
              ]
            }
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/vapor/http.git
[1/25467] Fetching http
Fetched https://github.com/vapor/http.git from cache (1.53s)
Fetching https://github.com/vapor/core.git from cache
Fetching https://github.com/apple/swift-nio.git from cache
Fetching https://github.com/apple/swift-nio-ssl.git from cache
Fetched https://github.com/vapor/core.git from cache (0.53s)
Fetched https://github.com/apple/swift-nio-ssl.git from cache (0.71s)
Fetched https://github.com/apple/swift-nio.git from cache (0.72s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 1.14.4 (0.79s)
Fetching https://github.com/apple/swift-nio-zlib-support.git from cache
Fetched https://github.com/apple/swift-nio-zlib-support.git from cache (0.42s)
Computing version for https://github.com/apple/swift-nio-zlib-support.git
Computed https://github.com/apple/swift-nio-zlib-support.git at 1.0.0 (0.47s)
Computing version for https://github.com/apple/swift-nio-ssl.git
Computed https://github.com/apple/swift-nio-ssl.git at 1.4.0 (0.03s)
Fetching https://github.com/apple/swift-nio-ssl-support.git from cache
Fetched https://github.com/apple/swift-nio-ssl-support.git from cache (0.45s)
Computing version for https://github.com/apple/swift-nio-ssl-support.git
Computed https://github.com/apple/swift-nio-ssl-support.git at 1.0.0 (0.50s)
Computing version for https://github.com/vapor/core.git
Computed https://github.com/vapor/core.git at 3.10.1 (0.03s)
Creating working copy for https://github.com/vapor/http.git
Working copy of https://github.com/vapor/http.git resolved at 3.4.0 (0464b71)
Creating working copy for https://github.com/vapor/core.git
Working copy of https://github.com/vapor/core.git resolved at 3.10.1
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 1.14.4
Creating working copy for https://github.com/apple/swift-nio-zlib-support.git
Working copy of https://github.com/apple/swift-nio-zlib-support.git resolved at 1.0.0
Creating working copy for https://github.com/apple/swift-nio-ssl-support.git
Working copy of https://github.com/apple/swift-nio-ssl-support.git resolved at 1.0.0
Creating working copy for https://github.com/apple/swift-nio-ssl.git
Working copy of https://github.com/apple/swift-nio-ssl.git resolved at 1.4.0
warning: 'swift-nio-ssl-support': ignoring declared target(s) 'swift-nio-ssl-support' in the system package
warning: 'swift-nio-zlib-support': ignoring declared target(s) 'swift-nio-zlib-support' in the system package
warning: '.resolve-product-dependencies': dependency 'http' is not used by any target
Found 3 product dependencies
  - Core
  - swift-nio
  - swift-nio-ssl
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/vapor/http.git
https://github.com/vapor/http.git
{
  "dependencies" : [
    {
      "identity" : "core",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "3.0.0",
            "upper_bound" : "4.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/vapor/core.git"
    },
    {
      "identity" : "swift-nio",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.14.2",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-nio.git"
    },
    {
      "identity" : "swift-nio-ssl",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.1",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-nio-ssl.git"
    }
  ],
  "manifest_display_name" : "HTTP",
  "name" : "HTTP",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "HTTP",
      "targets" : [
        "HTTP"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "HTTPPerformance",
      "targets" : [
        "HTTPPerformance"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "HTTPTests",
      "module_type" : "SwiftTarget",
      "name" : "HTTPTests",
      "path" : "Tests/HTTPTests",
      "sources" : [
        "HTTPClientTests.swift",
        "HTTPTests.swift"
      ],
      "target_dependencies" : [
        "HTTP"
      ],
      "type" : "test"
    },
    {
      "c99name" : "HTTPPerformance",
      "module_type" : "SwiftTarget",
      "name" : "HTTPPerformance",
      "path" : "Sources/HTTPPerformance",
      "product_memberships" : [
        "HTTPPerformance"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "HTTP"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "HTTP",
      "module_type" : "SwiftTarget",
      "name" : "HTTP",
      "path" : "Sources/HTTP",
      "product_dependencies" : [
        "Async",
        "Bits",
        "Core",
        "Debugging",
        "NIO",
        "NIOOpenSSL",
        "NIOHTTP1"
      ],
      "product_memberships" : [
        "HTTP",
        "HTTPPerformance"
      ],
      "sources" : [
        "Body/HTTPBody.swift",
        "Body/HTTPBodyRepresentable.swift",
        "Body/HTTPBodyStorage.swift",
        "Body/HTTPChunkedStream.swift",
        "Codable/HTTPMessageCoder.swift",
        "Cookies/HTTPCookieValue.swift",
        "Cookies/HTTPCookies.swift",
        "Exports.swift",
        "Message/Forwarded.swift",
        "Message/HTTPHeaderName.swift",
        "Message/HTTPHeaders.swift",
        "Message/HTTPMessage.swift",
        "Message/HTTPRequest.swift",
        "Message/HTTPResponse.swift",
        "Message/MediaTypePreference.swift",
        "Message/URL+HTTP.swift",
        "Responder/HTTPClient.swift",
        "Responder/HTTPClientProtocolUpgrader.swift",
        "Responder/HTTPScheme.swift",
        "Responder/HTTPServer.swift",
        "Responder/HTTPServerResponder.swift",
        "Utilities/HTTPError.swift",
        "Utilities/HTTPHeaders+Basic.swift",
        "Utilities/HTTPHeaders+Bearer.swift",
        "Utilities/RFC1123.swift",
        "Utilities/String+IsIPAddress.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
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...
[0/28] Write sources
[12/28] Write HTTPPerformance-entitlement.plist
[13/28] Write sources
[14/28] Write swift-version-2F0A5646E1D333AE.txt
[14/28] Write sources
[16/28] Compiling CNIOLinux ifaddrs-android.c
[17/28] Compiling CNIOZlib empty.c
[17/28] Compiling CNIOLinux shim.c
In file included from /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/shims.c:16:
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/include/c_nio_openssl.h:17:10: fatal error: 'openssl/conf.h' file not found
   17 | #include <openssl/conf.h>
      |          ^~~~~~~~~~~~~~~~
1 error generated.
[19/28] Compiling CNIOOpenSSL shims.c
[19/28] Compiling CNIODarwin shim.c
[19/28] Compiling c-atomics.c
In file included from /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/helpers.c:14:
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/include/c_nio_openssl.h:17:10: fatal error: 'openssl/conf.h' file not found
   17 | #include <openssl/conf.h>
      |          ^~~~~~~~~~~~~~~~
[19/28] Compiling CNIOOpenSSL helpers.c
[19/28] Compiling CNIOHTTPParser c_nio_http_parser.c
[19/28] Compiling CNIOSHA1 c_nio_sha1.c
warning: 'swift-nio-ssl-support': ignoring declared target(s) 'swift-nio-ssl-support' in the system package
warning: 'swift-nio-zlib-support': ignoring declared target(s) 'swift-nio-zlib-support' in the system package
warning: failed to retrieve search paths with pkg-config; maybe pkg-config is not installed
warning: couldn't find pc file for zlib
warning: you may be able to install openssl using your system-packager:
    brew install libressl
warning: couldn't find pc file for zlib
warning: you may be able to install openssl using your system-packager:
    brew install libressl
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
[0/1] Planning build
Building for debugging...
In file included from /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/shims.c:16:
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/include/c_nio_openssl.h:17:10: fatal error: 'openssl/conf.h' file not found
   17 | #include <openssl/conf.h>
      |          ^~~~~~~~~~~~~~~~
1 error generated.
[0/10] Compiling CNIOOpenSSL shims.c
In file included from /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/helpers.c:14:
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/include/c_nio_openssl.h:17:10: fatal error: 'openssl/conf.h' file not found
   17 | #include <openssl/conf.h>
      |          ^~~~~~~~~~~~~~~~
[0/10] Compiling CNIOOpenSSL helpers.c
[0/10] Compiling CNIODarwin shim.c
[0/10] Compiling c-atomics.c
[0/10] Compiling CNIOSHA1 c_nio_sha1.c
[0/10] Compiling CNIOHTTPParser c_nio_http_parser.c
[0/10] Write swift-version-2F0A5646E1D333AE.txt
warning: 'swift-nio-ssl-support': ignoring declared target(s) 'swift-nio-ssl-support' in the system package
warning: 'swift-nio-zlib-support': ignoring declared target(s) 'swift-nio-zlib-support' in the system package
warning: failed to retrieve search paths with pkg-config; maybe pkg-config is not installed
warning: couldn't find pc file for zlib
warning: you may be able to install openssl using your system-packager:
    brew install libressl
warning: couldn't find pc file for zlib
warning: you may be able to install openssl using your system-packager:
    brew install libressl
BUILD FAILURE 6.1 macosSpm