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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 RIBsTreeViewerClient, reference master (9cd8e8), with Swift 6.1 for Linux on 25 Apr 2025 18:50:26 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/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/srea/RIBsTreeViewerClient.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/srea/RIBsTreeViewerClient
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 9cd8e8f Merge pull request #29 from srea/dependabot/npm_and_yarn/Browser/minimist-1.2.5
Cloned https://github.com/srea/RIBsTreeViewerClient.git
Revision (git rev-parse @):
9cd8e8f7348b1c76c6c51f1e2da7a4855c2d5562
SUCCESS checkout https://github.com/srea/RIBsTreeViewerClient.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/srea/RIBsTreeViewerClient.git
https://github.com/srea/RIBsTreeViewerClient.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "rxswift",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "5.1.1",
            "upper_bound" : "6.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/ReactiveX/RxSwift.git"
    },
    {
      "identity" : "ribs",
      "requirement" : {
        "branch" : [
          "master"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/uber/RIBs.git"
    }
  ],
  "manifest_display_name" : "RIBsTreeViewerClient",
  "name" : "RIBsTreeViewerClient",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "8.0"
    }
  ],
  "products" : [
    {
      "name" : "RIBsTreeViewerClient",
      "targets" : [
        "RIBsTreeViewerClient"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "RIBsTreeViewerClient",
      "module_type" : "SwiftTarget",
      "name" : "RIBsTreeViewerClient",
      "path" : "RIBsTreeViewerClient/Sources",
      "product_dependencies" : [
        "RxSwift",
        "RxCocoa",
        "RIBs"
      ],
      "product_memberships" : [
        "RIBsTreeViewerClient"
      ],
      "sources" : [
        "RIBsTreeViewer.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/host -w "$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
Fetching https://github.com/uber/RIBs.git
[1/21570] Fetching ribs
Fetched https://github.com/uber/RIBs.git from cache (1.21s)
error: could not find a branch named ‘master’ in https://github.com/uber/RIBs.git (did you mean ‘main’?)
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4606859-3":/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
Updating https://github.com/uber/RIBs.git
Updated https://github.com/uber/RIBs.git (0.18s)
error: could not find a branch named ‘master’ in https://github.com/uber/RIBs.git (did you mean ‘main’?)
BUILD FAILURE 6.1 linux