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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 SwiftOxfordAPI, reference master (322df3), with Swift 6.1 for Linux on 25 Apr 2025 09:17:57 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/maximbilan/SwiftOxfordAPI.git
Reference: master
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/maximbilan/SwiftOxfordAPI
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 322df3b Update README.md
Cloned https://github.com/maximbilan/SwiftOxfordAPI.git
Revision (git rev-parse @):
322df3b8601e871874993e124fa31d22c91217d1
SUCCESS checkout https://github.com/maximbilan/SwiftOxfordAPI.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/maximbilan/SwiftOxfordAPI.git
https://github.com/maximbilan/SwiftOxfordAPI.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SwiftOxfordAPI",
  "name" : "SwiftOxfordAPI",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftOxfordAPI",
      "targets" : [
        "SwiftOxfordAPI"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftOxfordAPI",
      "module_type" : "SwiftTarget",
      "name" : "SwiftOxfordAPI",
      "path" : "Sources",
      "product_memberships" : [
        "SwiftOxfordAPI"
      ],
      "sources" : [
        "SwiftOxfordAPI.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.2"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -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 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/4] Emitting module SwiftOxfordAPI
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:42:24: error: 'URLSession' (aka 'AnyObject') cannot be constructed because it has no accessible initializers
 40 | 	private var appKey: String!
 41 | 	/// Default URL session.
 42 | 	private let session = URLSession(configuration: .default)
    |                        `- error: 'URLSession' (aka 'AnyObject') cannot be constructed because it has no accessible initializers
 43 |
 44 |     /**
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:42:51: error: cannot infer contextual base in reference to member 'default'
 40 | 	private var appKey: String!
 41 | 	/// Default URL session.
 42 | 	private let session = URLSession(configuration: .default)
    |                                                   `- error: cannot infer contextual base in reference to member 'default'
 43 |
 44 |     /**
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:15:20: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'SwiftOxfordAPI' may have shared mutable state; this is an error in the Swift 6 language mode
 10 |
 11 | /// A helper class for using Oxford Dictionaries API.
 12 | public class SwiftOxfordAPI {
    |              `- note: class 'SwiftOxfordAPI' does not conform to the 'Sendable' protocol
 13 |
 14 | 	/// Shared instance.
 15 | 	public static let shared = SwiftOxfordAPI()
    |                    |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'SwiftOxfordAPI' may have shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: add '@MainActor' to make static property 'shared' part of global actor 'MainActor'
    |                    `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 16 |
 17 | 	/// API structure.
[4/4] Compiling SwiftOxfordAPI SwiftOxfordAPI.swift
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:42:24: error: 'URLSession' (aka 'AnyObject') cannot be constructed because it has no accessible initializers
 40 | 	private var appKey: String!
 41 | 	/// Default URL session.
 42 | 	private let session = URLSession(configuration: .default)
    |                        `- error: 'URLSession' (aka 'AnyObject') cannot be constructed because it has no accessible initializers
 43 |
 44 |     /**
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:42:51: error: cannot infer contextual base in reference to member 'default'
 40 | 	private var appKey: String!
 41 | 	/// Default URL session.
 42 | 	private let session = URLSession(configuration: .default)
    |                                                   `- error: cannot infer contextual base in reference to member 'default'
 43 |
 44 |     /**
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:15:20: warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'SwiftOxfordAPI' may have shared mutable state; this is an error in the Swift 6 language mode
 10 |
 11 | /// A helper class for using Oxford Dictionaries API.
 12 | public class SwiftOxfordAPI {
    |              `- note: class 'SwiftOxfordAPI' does not conform to the 'Sendable' protocol
 13 |
 14 | 	/// Shared instance.
 15 | 	public static let shared = SwiftOxfordAPI()
    |                    |- warning: static property 'shared' is not concurrency-safe because non-'Sendable' type 'SwiftOxfordAPI' may have shared mutable state; this is an error in the Swift 6 language mode
    |                    |- note: add '@MainActor' to make static property 'shared' part of global actor 'MainActor'
    |                    `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 16 |
 17 | 	/// API structure.
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:134:26: error: cannot find 'URLRequest' in scope
132 |         }
133 |
134 |         var urlRequest = URLRequest(url: url)
    |                          `- error: cannot find 'URLRequest' in scope
135 |         urlRequest.addValue("application/json", forHTTPHeaderField: "Accept")
136 |         urlRequest.addValue(appId, forHTTPHeaderField: "app_id")
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:143:43: error: value of type 'HTTPURLResponse' (aka 'AnyObject') has no member 'statusCode'
141 |             guard let data = data,
142 |                 let response = response as? HTTPURLResponse,
143 |                 (200 ..< 300) ~= response.statusCode,
    |                                           `- error: value of type 'HTTPURLResponse' (aka 'AnyObject') has no member 'statusCode'
144 |                 error == nil else {
145 |                     completion(nil, error)
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-0":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[2/3] Emitting module SwiftOxfordAPI
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:42:24: error: 'URLSession' (aka 'AnyObject') cannot be constructed because it has no accessible initializers
 40 | 	private var appKey: String!
 41 | 	/// Default URL session.
 42 | 	private let session = URLSession(configuration: .default)
    |                        `- error: 'URLSession' (aka 'AnyObject') cannot be constructed because it has no accessible initializers
 43 |
 44 |     /**
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:42:51: error: cannot infer contextual base in reference to member 'default'
 40 | 	private var appKey: String!
 41 | 	/// Default URL session.
 42 | 	private let session = URLSession(configuration: .default)
    |                                                   `- error: cannot infer contextual base in reference to member 'default'
 43 |
 44 |     /**
[3/3] Compiling SwiftOxfordAPI SwiftOxfordAPI.swift
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:42:24: error: 'URLSession' (aka 'AnyObject') cannot be constructed because it has no accessible initializers
 40 | 	private var appKey: String!
 41 | 	/// Default URL session.
 42 | 	private let session = URLSession(configuration: .default)
    |                        `- error: 'URLSession' (aka 'AnyObject') cannot be constructed because it has no accessible initializers
 43 |
 44 |     /**
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:42:51: error: cannot infer contextual base in reference to member 'default'
 40 | 	private var appKey: String!
 41 | 	/// Default URL session.
 42 | 	private let session = URLSession(configuration: .default)
    |                                                   `- error: cannot infer contextual base in reference to member 'default'
 43 |
 44 |     /**
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:134:26: error: cannot find 'URLRequest' in scope
132 |         }
133 |
134 |         var urlRequest = URLRequest(url: url)
    |                          `- error: cannot find 'URLRequest' in scope
135 |         urlRequest.addValue("application/json", forHTTPHeaderField: "Accept")
136 |         urlRequest.addValue(appId, forHTTPHeaderField: "app_id")
/host/spi-builder-workspace/Sources/SwiftOxfordAPI.swift:143:43: error: value of type 'HTTPURLResponse' (aka 'AnyObject') has no member 'statusCode'
141 |             guard let data = data,
142 |                 let response = response as? HTTPURLResponse,
143 |                 (200 ..< 300) ~= response.statusCode,
    |                                           `- error: value of type 'HTTPURLResponse' (aka 'AnyObject') has no member 'statusCode'
144 |                 error == nil else {
145 |                     completion(nil, error)
BUILD FAILURE 6.1 linux