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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 RVS_Persistent_Prefs, reference 1.3.10 (78812d), with Swift 6.0 for Linux on 5 Nov 2024 13:55:45 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.56.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/RiftValleySoftware/RVS_PersistentPrefs.git
Reference: 1.3.10
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/RiftValleySoftware/RVS_PersistentPrefs
 * tag               1.3.10     -> FETCH_HEAD
HEAD is now at 78812d2 Added a cache, to reduce the number of times the defaults are loaded (It's a memory-intensive operation).
Cloned https://github.com/RiftValleySoftware/RVS_PersistentPrefs.git
Revision (git rev-parse @):
78812d207ea36b722647503d1944a67100993570
SUCCESS checkout https://github.com/RiftValleySoftware/RVS_PersistentPrefs.git at 1.3.10
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.0
Building package at path:  $PWD
https://github.com/RiftValleySoftware/RVS_PersistentPrefs.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.0-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete 2>&1
basic-6.0-latest: Pulling from finestructure/spi-images
Digest: sha256:47d26c99ca4f1ac0a332c85fd5b13ff4390e72115219984a57a68fe9d1063a05
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.0-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 RVS_Persistent_Prefs
/host/spi-builder-workspace/Sources/RVS_Persistent_Prefs/RVS_PersistentPrefs.swift:47:24: warning: static property '_cache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 45 |      The first key is the general prefs key, and the second key is each prefs key.
 46 |      */
 47 |     private static var _cache: [String: [String: Any]] = [:]
    |                        |- warning: static property '_cache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert '_cache' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: annotate '_cache' with '@MainActor' if property should only be accessed from the main actor
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 48 |
 49 |     /* ################################################################## */
/host/spi-builder-workspace/Sources/RVS_Persistent_Prefs/RVS_PersistentPrefs.swift:179:6: error: Objective-C interoperability is disabled
177 |      You simply read and write the Dictionary, using these accessors. The saving and retrieving happens in the background.
178 |      */
179 |     @objc dynamic public var values: [String: Any] {
    |      `- error: Objective-C interoperability is disabled
180 |         get {
181 |             lastError = nil
[4/4] Compiling RVS_Persistent_Prefs RVS_PersistentPrefs.swift
/host/spi-builder-workspace/Sources/RVS_Persistent_Prefs/RVS_PersistentPrefs.swift:47:24: warning: static property '_cache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 45 |      The first key is the general prefs key, and the second key is each prefs key.
 46 |      */
 47 |     private static var _cache: [String: [String: Any]] = [:]
    |                        |- warning: static property '_cache' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                        |- note: convert '_cache' to a 'let' constant to make 'Sendable' shared state immutable
    |                        |- note: annotate '_cache' with '@MainActor' if property should only be accessed from the main actor
    |                        `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 48 |
 49 |     /* ################################################################## */
/host/spi-builder-workspace/Sources/RVS_Persistent_Prefs/RVS_PersistentPrefs.swift:179:6: error: Objective-C interoperability is disabled
177 |      You simply read and write the Dictionary, using these accessors. The saving and retrieving happens in the background.
178 |      */
179 |     @objc dynamic public var values: [String: Any] {
    |      `- error: Objective-C interoperability is disabled
180 |         get {
181 |             lastError = nil
BUILD FAILURE 6.0 linux