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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 Schrodinger, reference master (0ae2be), with Swift 6.1 for Linux on 25 Apr 2025 10:54:00 UTC.

Swift 6 data race errors: 0

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/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

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/openkitten/schrodinger.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/openkitten/schrodinger
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 0ae2be9 Make package manifest a constant
Cloned https://github.com/openkitten/schrodinger.git
Revision (git rev-parse @):
0ae2be9c37616ede8e7cf6fef48ecae7297052a4
SUCCESS checkout https://github.com/openkitten/schrodinger.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/openkitten/schrodinger.git
https://github.com/openkitten/schrodinger.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Schrodinger",
  "name" : "Schrodinger",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Schrodinger",
      "targets" : [
        "Schrodinger"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Schrodinger",
      "module_type" : "SwiftTarget",
      "name" : "Schrodinger",
      "path" : "Sources/Schrodinger",
      "product_memberships" : [
        "Schrodinger"
      ],
      "sources" : [
        "Schrodinger.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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
[3/4] Emitting module Schrodinger
[4/4] Compiling Schrodinger Schrodinger.swift
/host/spi-builder-workspace/Sources/Schrodinger/Schrodinger.swift:136:13: warning: capture of 'self' with non-sendable type 'Promise<Wrapped>' in a '@Sendable' closure; this is an error in the Swift 6 language mode
110 |
111 | /// A closure based promise that executes the closure in a DispatchQueue on a normal priority
112 | public class Promise<Wrapped> : ManualPromise<Wrapped> {
    |              `- note: generic class 'Promise' does not conform to the 'Sendable' protocol
113 |     /// Completes the promise with the result of the closure
114 |     func complete(_ closure: (() throws -> Wrapped)) {
    :
134 |
135 |         backgroundExecutionQueue.async {
136 |             self.complete(closure)
    |             `- warning: capture of 'self' with non-sendable type 'Promise<Wrapped>' in a '@Sendable' closure; this is an error in the Swift 6 language mode
137 |         }
138 |     }
/host/spi-builder-workspace/Sources/Schrodinger/Schrodinger.swift:136:27: warning: capture of 'closure' with non-sendable type '() throws -> Wrapped' in a '@Sendable' closure; this is an error in the Swift 6 language mode
134 |
135 |         backgroundExecutionQueue.async {
136 |             self.complete(closure)
    |                           |- warning: capture of 'closure' with non-sendable type '() throws -> Wrapped' in a '@Sendable' closure; this is an error in the Swift 6 language mode
    |                           `- note: a function type must be marked '@Sendable' to conform to 'Sendable'
137 |         }
138 |     }
Build complete! (3.51s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Schrodinger",
  "name" : "Schrodinger",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Schrodinger",
      "targets" : [
        "Schrodinger"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Schrodinger",
      "module_type" : "SwiftTarget",
      "name" : "Schrodinger",
      "path" : "Sources/Schrodinger",
      "product_memberships" : [
        "Schrodinger"
      ],
      "sources" : [
        "Schrodinger.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
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
Done.