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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 swiftbar, reference v1.0.1 (100c59), with Swift 6.1 for Linux on 26 Apr 2025 18:00:26 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/theBreadCompany/swiftbar.git
Reference: v1.0.1
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/theBreadCompany/swiftbar
 * tag               v1.0.1     -> FETCH_HEAD
HEAD is now at 100c59b update syntax
Cloned https://github.com/theBreadCompany/swiftbar.git
Revision (git rev-parse @):
100c59b70a7c55eda4b3b2c1dd3047506b845196
SUCCESS checkout https://github.com/theBreadCompany/swiftbar.git at v1.0.1
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/theBreadCompany/swiftbar.git
https://github.com/theBreadCompany/swiftbar.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
  ],
  "manifest_display_name" : "swiftbar",
  "name" : "swiftbar",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "swiftbar",
      "targets" : [
        "swiftbar"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "Example",
      "targets" : [
        "Example"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "Example2",
      "targets" : [
        "Example2"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "Example3",
      "targets" : [
        "Example3"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "swiftbarTests",
      "module_type" : "SwiftTarget",
      "name" : "swiftbarTests",
      "path" : "Tests/swiftbarTests",
      "sources" : [
        "swiftbarTests.swift"
      ],
      "target_dependencies" : [
        "swiftbar"
      ],
      "type" : "test"
    },
    {
      "c99name" : "swiftbar",
      "module_type" : "SwiftTarget",
      "name" : "swiftbar",
      "path" : "Sources/swiftbar",
      "product_memberships" : [
        "swiftbar",
        "Example",
        "Example2",
        "Example3"
      ],
      "sources" : [
        "Progressbar.swift",
        "ProgressbarConfiguration.swift"
      ],
      "type" : "library"
    },
    {
      "c99name" : "Example3",
      "module_type" : "SwiftTarget",
      "name" : "Example3",
      "path" : "Sources/Example3",
      "product_memberships" : [
        "Example3"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "swiftbar"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "Example2",
      "module_type" : "SwiftTarget",
      "name" : "Example2",
      "path" : "Sources/Example2",
      "product_memberships" : [
        "Example2"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "swiftbar"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "Example",
      "module_type" : "SwiftTarget",
      "name" : "Example",
      "path" : "Sources/Example",
      "product_memberships" : [
        "Example"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "swiftbar"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.0"
}
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...
[0/15] Write sources
[4/15] Write swift-version-24593BA9C3E375BF.txt
[6/18] Compiling swiftbar ProgressbarConfiguration.swift
[7/18] Emitting module swiftbar
[8/18] Compiling swiftbar Progressbar.swift
/host/spi-builder-workspace/Sources/swiftbar/Progressbar.swift:124:16: error: cannot find '__stdoutp' in scope
122 |     private func printProgress() {
123 |         print("\u{1B}[1A\u{1B}[K" + self.currentState())
124 |         fflush(__stdoutp)
    |                `- error: cannot find '__stdoutp' in scope
125 |     }
126 | }
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...
[0/11] Write swift-version-24593BA9C3E375BF.txt
[2/14] Compiling swiftbar ProgressbarConfiguration.swift
[3/14] Emitting module swiftbar
[4/14] Compiling swiftbar Progressbar.swift
/host/spi-builder-workspace/Sources/swiftbar/Progressbar.swift:124:16: error: cannot find '__stdoutp' in scope
122 |     private func printProgress() {
123 |         print("\u{1B}[1A\u{1B}[K" + self.currentState())
124 |         fflush(__stdoutp)
    |                `- error: cannot find '__stdoutp' in scope
125 |     }
126 | }
BUILD FAILURE 6.1 linux