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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 SLChat with Swift 5.10 for Linux.

Build Command

bash -c docker run --rm -v "checkouts-4609320-1":/host -w "$workDir" registry.gitlab.com/finestructure/spi-images:basic-5.10-latest swift build 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.29.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/shial4/slchat.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/shial4/slchat
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 0bb88b9 Travis xcode9
Cloned https://github.com/shial4/slchat.git
Revision (git rev-parse @):
0bb88b99de08b0a71e6579daeee7c129360ef1cf
SUCCESS checkout https://github.com/shial4/slchat.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             5.10
Building package at path:  $workDir
https://github.com/shial4/slchat.git
Running build ...
bash -c docker run --rm -v "checkouts-4609320-1":/host -w "$workDir" registry.gitlab.com/finestructure/spi-images:basic-5.10-latest swift build 2>&1
Fetching https://github.com/IBM-Swift/BlueSSLService.git
Fetching https://github.com/IBM-Swift/CommonCrypto.git
Fetching https://github.com/IBM-Swift/Kitura-WebSocket
Fetching https://github.com/IBM-Swift/CCurl.git
Fetching https://github.com/IBM-Swift/LoggerAPI.git
Fetching https://github.com/IBM-Swift/Kitura-net.git
[1/2088] Fetching bluesslservice
[2089/2859] Fetching bluesslservice, loggerapi
[2236/3043] Fetching bluesslservice, loggerapi, ccurl
[2483/12587] Fetching bluesslservice, loggerapi, ccurl, kitura-net
[2743/12619] Fetching bluesslservice, loggerapi, ccurl, kitura-net, commoncrypto
[3742/14455] Fetching bluesslservice, loggerapi, ccurl, kitura-net, commoncrypto, kitura-websocket
Fetched https://github.com/IBM-Swift/CCurl.git from cache (0.35s)
Fetching https://github.com/IBM-Swift/BlueCryptor.git
Fetched https://github.com/IBM-Swift/LoggerAPI.git from cache (0.35s)
Fetching https://github.com/IBM-Swift/BlueSocket.git
Fetched https://github.com/IBM-Swift/BlueSSLService.git from cache (0.36s)
[4541/11412] Fetching kitura-net, commoncrypto, kitura-websocket
[11413/13050] Fetching kitura-net, commoncrypto, kitura-websocket, bluecryptor
[11577/15992] Fetching kitura-net, commoncrypto, kitura-websocket, bluecryptor, bluesocket
Fetched https://github.com/IBM-Swift/BlueCryptor.git from cache (0.32s)
Fetched https://github.com/IBM-Swift/CommonCrypto.git from cache (0.77s)
Fetched https://github.com/IBM-Swift/Kitura-WebSocket from cache (0.77s)
Computing version for https://github.com/IBM-Swift/Kitura-WebSocket
Fetched https://github.com/IBM-Swift/BlueSocket.git from cache (0.44s)
Fetched https://github.com/IBM-Swift/Kitura-net.git from cache (0.79s)
error: the Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifier
Updating https://github.com/IBM-Swift/Kitura-WebSocket
Updating https://github.com/IBM-Swift/Kitura-net.git
Updating https://github.com/IBM-Swift/CCurl.git
Updating https://github.com/IBM-Swift/BlueSSLService.git
Updating https://github.com/IBM-Swift/CommonCrypto.git
Updating https://github.com/IBM-Swift/LoggerAPI.git
Updated https://github.com/IBM-Swift/CCurl.git (0.18s)
Updated https://github.com/IBM-Swift/LoggerAPI.git (0.18s)
Updated https://github.com/IBM-Swift/Kitura-WebSocket (0.19s)
Computing version for https://github.com/IBM-Swift/Kitura-WebSocket
Updating https://github.com/IBM-Swift/BlueCryptor.git
Updating https://github.com/IBM-Swift/BlueSocket.git
Updated https://github.com/IBM-Swift/CommonCrypto.git (0.19s)
Updated https://github.com/IBM-Swift/Kitura-net.git (0.19s)
Updated https://github.com/IBM-Swift/BlueSSLService.git (0.20s)
Updated https://github.com/IBM-Swift/BlueCryptor.git (0.16s)
Updated https://github.com/IBM-Swift/BlueSocket.git (0.16s)
error: the Swift tools version specification is missing a label; consider inserting 'swift-tools-version:' between the comment marker and the version specifier
BUILD FAILURE 5.10 linux