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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 swift-ast-explorer, reference master (fd592c), with Swift 5.9 for Linux on 7 May 2025 01:43:23 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-5.9-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.3
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/swiftfiddle/swift-ast-explorer.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/swiftfiddle/swift-ast-explorer
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at fd592c8 Update dependency @babel/preset-env to v7.27.2 (#1486)
Cloned https://github.com/swiftfiddle/swift-ast-explorer.git
Revision (git rev-parse @):
fd592c821b0b4e147d8bbe9a59a8102e88eaf1f2
SUCCESS checkout https://github.com/swiftfiddle/swift-ast-explorer.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             5.9
Building package at path:  $PWD
https://github.com/swiftfiddle/swift-ast-explorer.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-5.9-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-5.9-latest: Pulling from finestructure/spi-images
Digest: sha256:93fe18f778ec94e026baa8cc68b2ae87de241b204c49ca7a3a12cf55897227aa
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-5.9-latest
Fetching https://github.com/apple/swift-tools-support-core
Fetching https://github.com/vapor/vapor.git
Fetching https://github.com/vapor/leaf.git
[1/3956] Fetching leaf
[3957/10675] Fetching leaf, swift-tools-support-core
Fetched https://github.com/vapor/leaf.git (0.29s)
[2285/6719] Fetching swift-tools-support-core
[6720/81056] Fetching swift-tools-support-core, vapor
Fetched https://github.com/apple/swift-tools-support-core (1.84s)
Fetched https://github.com/vapor/vapor.git (1.87s)
Computing version for https://github.com/apple/swift-tools-support-core
Computed https://github.com/apple/swift-tools-support-core at 0.7.3 (1.00s)
Computing version for https://github.com/vapor/leaf.git
error: Dependencies could not be resolved because root depends on 'leaf' 4.5.0..<5.0.0.
'leaf' >= 4.5.0 cannot be used because 'leaf' 4.5.0 contains incompatible tools version (5.10.0) and no versions of 'leaf' match the requirement 4.5.1..<5.0.0.
BUILD FAILURE 5.9 linux