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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 MailCore with Swift 6.0 for macOS (SPM).

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/liveui/mailcore.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/liveui/mailcore
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 4371672 upgrading packages
Cloned https://github.com/liveui/mailcore.git
Revision (git rev-parse @):
43716728291958a4bbe278720c85aef13cb8c248
SUCCESS checkout https://github.com/liveui/mailcore.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/liveui/mailcore.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/52] Write sources
[36/52] Write swift-version-6F35C1178C84523A.txt
[37/52] Compiling CNIOLinux ifaddrs-android.c
[38/52] Compiling CNIOLinux shim.c
[39/52] Compiling CNIOZlib empty.c
In file included from /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/shims.c:16:
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/include/c_nio_openssl.h:17:10: fatal error: 'openssl/conf.h' file not found
   17 | #include <openssl/conf.h>
      |          ^~~~~~~~~~~~~~~~
1 error generated.
[40/52] Compiling CNIOOpenSSL shims.c
[40/52] Compiling CCryptoOpenSSL shim.c
[40/52] Compiling CNIODarwin shim.c
[40/52] Compiling CNIOHTTPParser c_nio_http_parser.c
In file included from /Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/helpers.c:14:
/Users/admin/builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/include/c_nio_openssl.h:17:10: fatal error: 'openssl/conf.h' file not found
   17 | #include <openssl/conf.h>
      |          ^~~~~~~~~~~~~~~~
[40/52] Compiling CNIOOpenSSL helpers.c
[40/52] Compiling CNIOSHA1 c_nio_sha1.c
[40/52] Compiling c-atomics.c
Fetching https://github.com/vapor/crypto.git
Fetching https://github.com/vapor/http.git
Fetching https://github.com/IBM-Swift/Swift-SMTP.git
Fetching https://github.com/IBM-Swift/BlueSSLService.git
Fetching https://github.com/vapor-community/sendgrid-provider.git
Fetching https://github.com/vapor/url-encoded-form.git
Fetching https://github.com/IBM-Swift/LoggerAPI.git
[1/381] Fetching url-encoded-form
[28/1152] Fetching url-encoded-form, loggerapi
[315/26619] Fetching url-encoded-form, loggerapi, http
[316/29405] Fetching url-encoded-form, loggerapi, http, crypto
[317/30356] Fetching url-encoded-form, loggerapi, http, crypto, sendgrid-provider
[545/32943] Fetching url-encoded-form, loggerapi, http, crypto, sendgrid-provider, swift-smtp
[780/35031] Fetching url-encoded-form, loggerapi, http, crypto, sendgrid-provider, swift-smtp, bluesslservice
Fetched https://github.com/vapor/crypto.git from cache (1.41s)
Fetching https://github.com/vapor/database-kit.git
Fetched https://github.com/IBM-Swift/Swift-SMTP.git from cache (1.41s)
Fetching https://github.com/LiveUI/VaporTestTools.git
Fetched https://github.com/IBM-Swift/BlueSSLService.git from cache (1.41s)
Fetching https://github.com/apple/swift-nio-zlib-support.git
[22732/27570] Fetching url-encoded-form, loggerapi, http, sendgrid-provider
Fetched https://github.com/vapor/url-encoded-form.git from cache (1.79s)
Fetching https://github.com/vapor/multipart.git
Fetched https://github.com/IBM-Swift/LoggerAPI.git from cache (1.79s)
Fetching https://github.com/vapor/console.git
Fetched https://github.com/vapor/http.git from cache (1.79s)
Fetching https://github.com/vapor/service.git
Fetched https://github.com/vapor-community/sendgrid-provider.git from cache (1.79s)
Fetching https://github.com/vapor/validation.git
[1/1181] Fetching database-kit
[25/1518] Fetching database-kit, vaportesttools
[49/1533] Fetching database-kit, vaportesttools, swift-nio-zlib-support
Fetched https://github.com/apple/swift-nio-zlib-support.git from cache (0.68s)
Fetching https://github.com/vapor/core.git
[60/1518] Fetching database-kit, vaportesttools
Fetched https://github.com/vapor/database-kit.git from cache (0.92s)
Fetched https://github.com/LiveUI/VaporTestTools.git from cache (0.91s)
Fetching https://github.com/vapor/routing.git
Fetching https://github.com/IBM-Swift/BlueCryptor.git
[1/919] Fetching service
[20/1498] Fetching service, validation
[231/3343] Fetching service, validation, multipart
[1712/8704] Fetching service, validation, multipart, console
Fetched https://github.com/vapor/validation.git from cache (0.85s)
Fetching https://github.com/twof/VaporMailgunService.git
[1351/8125] Fetching service, multipart, console
Fetched https://github.com/vapor/service.git from cache (0.89s)
Fetching https://github.com/vapor/websocket.git
[714/7206] Fetching multipart, console
[1037/27349] Fetching multipart, console, core
Fetched https://github.com/vapor/console.git from cache (1.22s)
Fetching https://github.com/vapor/vapor.git
[1105/23640] Fetching multipart, core, bluecryptor
[1637/44330] Fetching multipart, core, bluecryptor, routing
[17511/45045] Fetching multipart, core, bluecryptor, routing, vapormailgunservice
[17569/47518] Fetching multipart, core, bluecryptor, routing, vapormailgunservice, websocket
Fetched https://github.com/twof/VaporMailgunService.git from cache (0.93s)
[24251/46803] Fetching multipart, core, bluecryptor, routing, websocket
Fetching https://github.com/apple/swift-nio.git
Fetched https://github.com/vapor/websocket.git from cache (0.99s)
Fetching https://github.com/apple/swift-nio-ssl.git
[23215/44330] Fetching multipart, core, bluecryptor, routing
Fetched https://github.com/vapor/core.git from cache (1.80s)
Fetching https://github.com/IBM-Swift/BlueSocket.git
[9405/24187] Fetching multipart, bluecryptor, routing
[16441/92859] Fetching multipart, bluecryptor, routing, vapor
[23590/95801] Fetching multipart, bluecryptor, routing, vapor, bluesocket
[28486/108069] Fetching multipart, bluecryptor, routing, vapor, bluesocket, swift-nio-ssl
[36585/173589] Fetching multipart, bluecryptor, routing, vapor, bluesocket, swift-nio-ssl, swift-nio
Fetched https://github.com/IBM-Swift/BlueSocket.git from cache (1.15s)
Fetching https://github.com/vapor/template-kit.git
[75486/170647] Fetching multipart, bluecryptor, routing, vapor, swift-nio-ssl, swift-nio
Fetched https://github.com/vapor/multipart.git from cache (3.35s)
Fetching https://github.com/apple/swift-nio-ssl-support.git
[91513/168802] Fetching bluecryptor, routing, vapor, swift-nio-ssl, swift-nio
Fetched https://github.com/vapor/vapor.git from cache (2.67s)
Computing version for https://github.com/LiveUI/VaporTestTools.git
[59543/100130] Fetching bluecryptor, routing, swift-nio-ssl, swift-nio
Fetched https://github.com/apple/swift-nio-ssl.git from cache (2.06s)
[49242/87878] Fetching bluecryptor, routing, swift-nio, swift-nio-ssl-support
[49258/89160] Fetching bluecryptor, routing, swift-nio, swift-nio-ssl-support, template-kit
Fetched https://github.com/apple/swift-nio-ssl-support.git from cache (0.63s)
[49331/89144] Fetching bluecryptor, routing, swift-nio, template-kit
Fetched https://github.com/vapor/template-kit.git from cache (0.92s)
[53172/87862] Fetching bluecryptor, routing, swift-nio
Computed https://github.com/LiveUI/VaporTestTools.git at 0.1.7 (0.72s)
Fetched https://github.com/IBM-Swift/BlueCryptor.git from cache (4.45s)
Fetched https://github.com/vapor/routing.git from cache (4.45s)
[39312/65520] Fetching swift-nio
Fetched https://github.com/apple/swift-nio.git from cache (7.99s)
Computing version for https://github.com/IBM-Swift/LoggerAPI.git
Computed https://github.com/IBM-Swift/LoggerAPI.git at 1.8.1 (0.73s)
Computing version for https://github.com/IBM-Swift/Swift-SMTP.git
Computed https://github.com/IBM-Swift/Swift-SMTP.git at 5.1.1 (0.66s)
Computing version for https://github.com/vapor-community/sendgrid-provider.git
Computed https://github.com/vapor-community/sendgrid-provider.git at 3.0.6 (0.65s)
Computing version for https://github.com/twof/VaporMailgunService.git
Computed https://github.com/twof/VaporMailgunService.git at 1.8.1 (0.66s)
Computing version for https://github.com/vapor/vapor.git
Computed https://github.com/vapor/vapor.git at 3.3.3 (0.69s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 1.14.4 (0.69s)
Computing version for https://github.com/IBM-Swift/BlueCryptor.git
Computed https://github.com/IBM-Swift/BlueCryptor.git at 1.0.31 (0.67s)
Computing version for https://github.com/IBM-Swift/BlueSSLService.git
Computed https://github.com/IBM-Swift/BlueSSLService.git at 1.0.49 (0.67s)
Computing version for https://github.com/IBM-Swift/BlueSocket.git
Computed https://github.com/IBM-Swift/BlueSocket.git at 1.0.49 (0.66s)
Computing version for https://github.com/vapor/websocket.git
Computed https://github.com/vapor/websocket.git at 1.1.2 (0.65s)
Computing version for https://github.com/vapor/validation.git
Computed https://github.com/vapor/validation.git at 2.1.1 (0.65s)
Computing version for https://github.com/vapor/url-encoded-form.git
Computed https://github.com/vapor/url-encoded-form.git at 1.1.0 (0.65s)
Computing version for https://github.com/vapor/template-kit.git
Computed https://github.com/vapor/template-kit.git at 1.5.0 (0.65s)
Computing version for https://github.com/vapor/service.git
Computed https://github.com/vapor/service.git at 1.0.2 (0.65s)
Computing version for https://github.com/vapor/routing.git
Computed https://github.com/vapor/routing.git at 3.1.0 (0.63s)
Computing version for https://github.com/vapor/multipart.git
Computed https://github.com/vapor/multipart.git at 3.1.3 (0.64s)
Computing version for https://github.com/vapor/http.git
Computed https://github.com/vapor/http.git at 3.4.0 (0.65s)
Computing version for https://github.com/vapor/database-kit.git
Computed https://github.com/vapor/database-kit.git at 1.3.3 (0.64s)
Computing version for https://github.com/vapor/crypto.git
Computed https://github.com/vapor/crypto.git at 3.4.1 (0.66s)
Computing version for https://github.com/vapor/core.git
Computed https://github.com/vapor/core.git at 3.10.1 (0.66s)
Computing version for https://github.com/vapor/console.git
Computed https://github.com/vapor/console.git at 3.1.1 (0.66s)
Computing version for https://github.com/apple/swift-nio-zlib-support.git
Computed https://github.com/apple/swift-nio-zlib-support.git at 1.0.0 (0.65s)
Computing version for https://github.com/apple/swift-nio-ssl.git
Computed https://github.com/apple/swift-nio-ssl.git at 1.4.0 (0.66s)
Computing version for https://github.com/apple/swift-nio-ssl-support.git
Computed https://github.com/apple/swift-nio-ssl-support.git at 1.0.0 (0.65s)
Creating working copy for https://github.com/IBM-Swift/BlueCryptor.git
Working copy of https://github.com/IBM-Swift/BlueCryptor.git resolved at 1.0.31
Creating working copy for https://github.com/IBM-Swift/BlueSSLService.git
Working copy of https://github.com/IBM-Swift/BlueSSLService.git resolved at 1.0.49
Creating working copy for https://github.com/apple/swift-nio-ssl-support.git
Working copy of https://github.com/apple/swift-nio-ssl-support.git resolved at 1.0.0
Creating working copy for https://github.com/vapor/routing.git
Working copy of https://github.com/vapor/routing.git resolved at 3.1.0
Creating working copy for https://github.com/apple/swift-nio-zlib-support.git
Working copy of https://github.com/apple/swift-nio-zlib-support.git resolved at 1.0.0
Creating working copy for https://github.com/twof/VaporMailgunService.git
Working copy of https://github.com/twof/VaporMailgunService.git resolved at 1.8.1
Creating working copy for https://github.com/vapor/vapor.git
Working copy of https://github.com/vapor/vapor.git resolved at 3.3.3
Creating working copy for https://github.com/IBM-Swift/BlueSocket.git
Working copy of https://github.com/IBM-Swift/BlueSocket.git resolved at 1.0.49
Creating working copy for https://github.com/vapor/database-kit.git
Working copy of https://github.com/vapor/database-kit.git resolved at 1.3.3
Creating working copy for https://github.com/vapor/template-kit.git
Working copy of https://github.com/vapor/template-kit.git resolved at 1.5.0
Creating working copy for https://github.com/apple/swift-nio-ssl.git
Working copy of https://github.com/apple/swift-nio-ssl.git resolved at 1.4.0
Creating working copy for https://github.com/vapor/crypto.git
Working copy of https://github.com/vapor/crypto.git resolved at 3.4.1
Creating working copy for https://github.com/vapor/console.git
Working copy of https://github.com/vapor/console.git resolved at 3.1.1
Creating working copy for https://github.com/vapor/websocket.git
Working copy of https://github.com/vapor/websocket.git resolved at 1.1.2
Creating working copy for https://github.com/LiveUI/VaporTestTools.git
Working copy of https://github.com/LiveUI/VaporTestTools.git resolved at 0.1.7
Creating working copy for https://github.com/vapor/core.git
Working copy of https://github.com/vapor/core.git resolved at 3.10.1
Creating working copy for https://github.com/vapor/http.git
Working copy of https://github.com/vapor/http.git resolved at 3.4.0
Creating working copy for https://github.com/IBM-Swift/LoggerAPI.git
Working copy of https://github.com/IBM-Swift/LoggerAPI.git resolved at 1.8.1
Creating working copy for https://github.com/apple/swift-nio.git
Working copy of https://github.com/apple/swift-nio.git resolved at 1.14.4
Creating working copy for https://github.com/vapor/url-encoded-form.git
Working copy of https://github.com/vapor/url-encoded-form.git resolved at 1.1.0
Creating working copy for https://github.com/vapor-community/sendgrid-provider.git
Working copy of https://github.com/vapor-community/sendgrid-provider.git resolved at 3.0.6
Creating working copy for https://github.com/vapor/service.git
Working copy of https://github.com/vapor/service.git resolved at 1.0.2
Creating working copy for https://github.com/vapor/multipart.git
Working copy of https://github.com/vapor/multipart.git resolved at 3.1.3
Creating working copy for https://github.com/vapor/validation.git
Working copy of https://github.com/vapor/validation.git resolved at 2.1.1
Creating working copy for https://github.com/IBM-Swift/Swift-SMTP.git
Working copy of https://github.com/IBM-Swift/Swift-SMTP.git resolved at 5.1.1
warning: 'swift-nio-ssl-support': ignoring declared target(s) 'swift-nio-ssl-support' in the system package
warning: 'swift-nio-zlib-support': ignoring declared target(s) 'swift-nio-zlib-support' in the system package
warning: 'spi-builder-workspace': dependency 'loggerapi' is not used by any target
warning: failed to retrieve search paths with pkg-config; maybe pkg-config is not installed
warning: couldn't find pc file for zlib
warning: you may be able to install openssl using your system-packager:
    brew install libressl
BUILD FAILURE 6.0 macosSpm
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.