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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 Swiftfall, reference 1.5.2 (da7fc3), with Swift 6.1 for Linux on 25 Apr 2025 09:15:29 UTC.

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 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/bmbowdish/swiftfall.git
Reference: 1.5.2
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/bmbowdish/swiftfall
 * tag               1.5.2      -> FETCH_HEAD
HEAD is now at da7fc3c Key decoding strategy (#50)
Cloned https://github.com/bmbowdish/swiftfall.git
Revision (git rev-parse @):
da7fc3ce715ffebd79d72d569dc0a599c2e95f02
SUCCESS checkout https://github.com/bmbowdish/swiftfall.git at 1.5.2
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/bmbowdish/swiftfall.git
https://github.com/bmbowdish/swiftfall.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Swiftfall",
  "name" : "Swiftfall",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Swiftfall",
      "targets" : [
        "Swiftfall"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "Tests",
      "module_type" : "SwiftTarget",
      "name" : "Tests",
      "path" : "Tests",
      "sources" : [
        "LinuxMain.swift",
        "Tests.swift"
      ],
      "target_dependencies" : [
        "Swiftfall"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Swiftfall",
      "module_type" : "SwiftTarget",
      "name" : "Swiftfall",
      "path" : "Sources/Swiftfall",
      "product_memberships" : [
        "Swiftfall"
      ],
      "sources" : [
        "Swiftfall.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-0":/host -w "$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 Swiftfall
[4/4] Compiling Swiftfall Swiftfall.swift
/host/spi-builder-workspace/Sources/Swiftfall/Swiftfall.swift:311:37: warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
309 |                 var text = ""
310 |                 if self.usd != nil {
311 |                     text += "usd: \(usd)"
    |                                     |- warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
    |                                     |- note: use 'String(describing:)' to silence this warning
    |                                     `- note: provide a default value to avoid this warning
312 |                 }
313 |                 if self.usdFoil != nil {
/host/spi-builder-workspace/Sources/Swiftfall/Swiftfall.swift:314:42: warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
312 |                 }
313 |                 if self.usdFoil != nil {
314 |                     text += "usd foil: \(usdFoil)"
    |                                          |- warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
    |                                          |- note: use 'String(describing:)' to silence this warning
    |                                          `- note: provide a default value to avoid this warning
315 |                 }
316 |                 if self.eur != nil {
/host/spi-builder-workspace/Sources/Swiftfall/Swiftfall.swift:317:37: warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
315 |                 }
316 |                 if self.eur != nil {
317 |                     text += "usd: \(eur)"
    |                                     |- warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
    |                                     |- note: use 'String(describing:)' to silence this warning
    |                                     `- note: provide a default value to avoid this warning
318 |                 }
319 |                 if self.tix != nil {
/host/spi-builder-workspace/Sources/Swiftfall/Swiftfall.swift:320:37: warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
318 |                 }
319 |                 if self.tix != nil {
320 |                     text += "usd: \(tix)"
    |                                     |- warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
    |                                     |- note: use 'String(describing:)' to silence this warning
    |                                     `- note: provide a default value to avoid this warning
321 |                 }
322 |                 return text
/host/spi-builder-workspace/Sources/Swiftfall/Swiftfall.swift:499:31: error: type 'URLSession' (aka 'AnyObject') has no member 'shared'
497 |
498 |         let url = URL(string: "\(scryfall)\(call)")
499 |         let task = URLSession.shared.dataTask(with: url!) {(data, response, error) in
    |                               `- error: type 'URLSession' (aka 'AnyObject') has no member 'shared'
500 |
501 |             guard let content = data else {
/host/spi-builder-workspace/Sources/Swiftfall/Swiftfall.swift:508:61: error: value of type 'HTTPURLResponse' (aka 'AnyObject') has no member 'statusCode'
506 |             let decoder = JSONDecoder()
507 |             decoder.keyDecodingStrategy = .convertFromSnakeCase
508 |             let httpStatus = (response as! HTTPURLResponse).statusCode
    |                                                             `- error: value of type 'HTTPURLResponse' (aka 'AnyObject') has no member 'statusCode'
509 |             do {
510 |                 if (200..<300).contains(httpStatus) {
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 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
[2/3] Emitting module Swiftfall
[3/3] Compiling Swiftfall Swiftfall.swift
/host/spi-builder-workspace/Sources/Swiftfall/Swiftfall.swift:311:37: warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
309 |                 var text = ""
310 |                 if self.usd != nil {
311 |                     text += "usd: \(usd)"
    |                                     |- warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
    |                                     |- note: use 'String(describing:)' to silence this warning
    |                                     `- note: provide a default value to avoid this warning
312 |                 }
313 |                 if self.usdFoil != nil {
/host/spi-builder-workspace/Sources/Swiftfall/Swiftfall.swift:314:42: warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
312 |                 }
313 |                 if self.usdFoil != nil {
314 |                     text += "usd foil: \(usdFoil)"
    |                                          |- warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
    |                                          |- note: use 'String(describing:)' to silence this warning
    |                                          `- note: provide a default value to avoid this warning
315 |                 }
316 |                 if self.eur != nil {
/host/spi-builder-workspace/Sources/Swiftfall/Swiftfall.swift:317:37: warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
315 |                 }
316 |                 if self.eur != nil {
317 |                     text += "usd: \(eur)"
    |                                     |- warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
    |                                     |- note: use 'String(describing:)' to silence this warning
    |                                     `- note: provide a default value to avoid this warning
318 |                 }
319 |                 if self.tix != nil {
/host/spi-builder-workspace/Sources/Swiftfall/Swiftfall.swift:320:37: warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
318 |                 }
319 |                 if self.tix != nil {
320 |                     text += "usd: \(tix)"
    |                                     |- warning: string interpolation produces a debug description for an optional value; did you mean to make this explicit?
    |                                     |- note: use 'String(describing:)' to silence this warning
    |                                     `- note: provide a default value to avoid this warning
321 |                 }
322 |                 return text
/host/spi-builder-workspace/Sources/Swiftfall/Swiftfall.swift:499:31: error: type 'URLSession' (aka 'AnyObject') has no member 'shared'
497 |
498 |         let url = URL(string: "\(scryfall)\(call)")
499 |         let task = URLSession.shared.dataTask(with: url!) {(data, response, error) in
    |                               `- error: type 'URLSession' (aka 'AnyObject') has no member 'shared'
500 |
501 |             guard let content = data else {
/host/spi-builder-workspace/Sources/Swiftfall/Swiftfall.swift:508:61: error: value of type 'HTTPURLResponse' (aka 'AnyObject') has no member 'statusCode'
506 |             let decoder = JSONDecoder()
507 |             decoder.keyDecodingStrategy = .convertFromSnakeCase
508 |             let httpStatus = (response as! HTTPURLResponse).statusCode
    |                                                             `- error: value of type 'HTTPURLResponse' (aka 'AnyObject') has no member 'statusCode'
509 |             do {
510 |                 if (200..<300).contains(httpStatus) {
BUILD FAILURE 6.1 linux