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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 SlackKit with Swift 5.9 for macOS (SPM).

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.0.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.25.3
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/pvzig/SlackKit.git
Reference: 4.8.0
Initialized empty Git repository in /Users/builder/builds/TDmZkXJm/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/pvzig/SlackKit
 * tag               4.8.0      -> FETCH_HEAD
HEAD is now at 3823aee Revert oauth endpoint change and query params fix (#207)
Cloned https://github.com/pvzig/SlackKit.git
Revision (git rev-parse @):
3823aee4cfd05d618d2aaf334681b9bc4db89a63
SUCCESS checkout https://github.com/pvzig/SlackKit.git at 4.8.0
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.9
Building package at path:  $PWD/checkout
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.0.0.app xcrun swift build --arch arm64
Building for debugging...
[0/13] Compiling CNIOLinux shim.c
[1/13] Compiling CNIOLinux ifaddrs-android.c
In file included from /Users/builder/builds/TDmZkXJm/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/shims.c:16:
/Users/builder/builds/TDmZkXJm/3/finestructure/swiftpackageindex-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
#include <openssl/conf.h>
         ^~~~~~~~~~~~~~~~
1 error generated.
[2/13] Compiling CNIOOpenSSL shims.c
[2/13] Compiling CNIOHTTPParser c_nio_http_parser.c
[2/13] Compiling c-atomics.c
[2/13] Compiling CNIOSHA1 c_nio_sha1.c
[2/13] Compiling CNIODarwin shim.c
In file included from /Users/builder/builds/TDmZkXJm/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/helpers.c:14:
/Users/builder/builds/TDmZkXJm/3/finestructure/swiftpackageindex-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
#include <openssl/conf.h>
         ^~~~~~~~~~~~~~~~
[2/13] Compiling CNIOOpenSSL helpers.c
[2/13] Compiling CNIOZlib empty.c
Fetching https://github.com/vapor/websocket from cache
Fetching https://github.com/daltoniam/Starscream from cache
Fetching https://github.com/httpswift/swifter.git from cache
Fetched https://github.com/httpswift/swifter.git (0.44s)
Fetched https://github.com/vapor/websocket (0.45s)
Fetched https://github.com/daltoniam/Starscream (0.48s)
Computing version for https://github.com/vapor/websocket
Computed https://github.com/vapor/websocket at 1.1.2 (0.92s)
Fetching https://github.com/vapor/http.git from cache
Fetching https://github.com/apple/swift-nio-ssl.git from cache
Fetching https://github.com/apple/swift-nio.git from cache
Fetched https://github.com/apple/swift-nio-ssl.git (2.52s)
Fetching https://github.com/vapor/crypto.git from cache
Fetched https://github.com/vapor/crypto.git (0.26s)
Fetching https://github.com/vapor/core.git from cache
Fetched https://github.com/vapor/core.git (0.32s)
Fetched https://github.com/vapor/http.git (4.55s)
Fetched https://github.com/apple/swift-nio.git (5.04s)
Computing version for https://github.com/httpswift/swifter.git
Computed https://github.com/httpswift/swifter.git at 1.5.0 (0.07s)
Computing version for https://github.com/daltoniam/Starscream
Computed https://github.com/daltoniam/Starscream at 4.0.6 (0.05s)
Computing version for https://github.com/apple/swift-nio-ssl.git
Computed https://github.com/apple/swift-nio-ssl.git at 1.4.0 (0.98s)
Fetching https://github.com/apple/swift-nio-ssl-support.git from cache
Fetched https://github.com/apple/swift-nio-ssl-support.git (0.23s)
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)
Computing version for https://github.com/vapor/crypto.git
Computed https://github.com/vapor/crypto.git at 3.4.1 (0.68s)
Computing version for https://github.com/apple/swift-nio.git
Computed https://github.com/apple/swift-nio.git at 1.14.4 (0.82s)
Fetching https://github.com/apple/swift-nio-zlib-support.git from cache
Fetched https://github.com/apple/swift-nio-zlib-support.git (0.24s)
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 (0.57s)
Computing version for https://github.com/vapor/http.git
Computed https://github.com/vapor/http.git at 3.4.0 (0.66s)
Computing version for https://github.com/vapor/core.git
Computed https://github.com/vapor/core.git at 3.10.1 (0.63s)
Creating working copy for https://github.com/daltoniam/Starscream
Working copy of https://github.com/daltoniam/Starscream resolved at 4.0.6
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/http.git
Working copy of https://github.com/vapor/http.git resolved at 3.4.0
Creating working copy for https://github.com/httpswift/swifter.git
Working copy of https://github.com/httpswift/swifter.git resolved at 1.5.0
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/vapor/websocket
Working copy of https://github.com/vapor/websocket resolved at 1.1.2
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/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/core.git
Working copy of https://github.com/vapor/core.git resolved at 3.10.1
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
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: 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
[0/1] Planning build
Building for debugging...
[0/11] Compiling CNIOZlib empty.c
In file included from /Users/builder/builds/TDmZkXJm/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/shims.c:16:
/Users/builder/builds/TDmZkXJm/3/finestructure/swiftpackageindex-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
#include <openssl/conf.h>
         ^~~~~~~~~~~~~~~~
1 error generated.
[1/11] Compiling CNIOOpenSSL shims.c
[1/11] Compiling CCryptoOpenSSL shim.c
In file included from /Users/builder/builds/TDmZkXJm/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/checkouts/swift-nio-ssl/Sources/CNIOOpenSSL/helpers.c:14:
/Users/builder/builds/TDmZkXJm/3/finestructure/swiftpackageindex-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
#include <openssl/conf.h>
         ^~~~~~~~~~~~~~~~
[6/11] Compiling CNIOOpenSSL helpers.c
[6/11] Compiling CNIODarwin shim.c
[6/11] Compiling CNIOSHA1 c_nio_sha1.c
[6/11] Compiling CNIOHTTPParser c_nio_http_parser.c
[6/11] Compiling c-atomics.c
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: 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 5.9 macosSpm
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.