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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 SGSL with Swift 5.10 for macOS (SPM).

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.29.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/kongzii/SGSL.git
Reference: 0.2.0
Initialized empty Git repository in /Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.git/
From https://github.com/kongzii/SGSL
 * tag               0.2.0      -> FETCH_HEAD
HEAD is now at 560ff35 Merge pull request #7 from kongzii/abs-dev
Cloned https://github.com/kongzii/SGSL.git
Revision (git rev-parse @):
560ff35b5ca03f9c0836a109a948c5ae4b997b8b
SUCCESS checkout https://github.com/kongzii/SGSL.git at 0.2.0
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $workDir
https://github.com/kongzii/SGSL.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0-Beta.2.app xcrun swift build --arch arm64
Building for debugging...
[0/5] Write sources
[4/5] Write swift-version--423B1241ED78D482.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[6/11] Emitting module MathematicalFunctions
<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "shim.h"
        ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/CGSL/shim.h:4:10: error: 'gsl/gsl_math.h' file not found
#include <gsl/gsl_math.h>
         ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/MathematicalFunctions/MathematicalFunctions.swift:1:8: error: could not build Objective-C module 'CGSL'
import CGSL
       ^
[7/11] Compiling MathematicalFunctions MathematicalFunctions.swift
<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "shim.h"
        ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/CGSL/shim.h:4:10: error: 'gsl/gsl_math.h' file not found
#include <gsl/gsl_math.h>
         ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/MathematicalFunctions/MathematicalFunctions.swift:1:8: error: could not build Objective-C module 'CGSL'
import CGSL
       ^
error: emit-module command failed with exit code 1 (use -v to see invocation)
[8/11] Emitting module RandomNumberGeneration
<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "shim.h"
        ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/CGSL/shim.h:4:10: error: 'gsl/gsl_math.h' file not found
#include <gsl/gsl_math.h>
         ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/RandomNumberGeneration/RandomNumberGeneration.swift:1:8: error: could not build Objective-C module 'CGSL'
import CGSL
       ^
[9/11] Compiling RandomNumberGeneration RandomNumberGeneration.swift
<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "shim.h"
        ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/CGSL/shim.h:4:10: error: 'gsl/gsl_math.h' file not found
#include <gsl/gsl_math.h>
         ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/RandomNumberGeneration/RandomNumberGeneration.swift:1:8: error: could not build Objective-C module 'CGSL'
import CGSL
       ^
error: fatalError
error: emit-module command failed with exit code 1 (use -v to see invocation)
<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "shim.h"
        ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/CGSL/shim.h:4:10: error: 'gsl/gsl_math.h' file not found
#include <gsl/gsl_math.h>
         ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Statistics/Statistics.swift:1:8: error: could not build Objective-C module 'CGSL'
import CGSL
       ^
Fetching https://github.com/pvieito/PythonKit.git
[1/1579] Fetching pythonkit
Fetched https://github.com/pvieito/PythonKit.git from cache (0.30s)
Fetching https://github.com/pvieito/LoggerKit.git
[1/525] Fetching loggerkit
Fetched https://github.com/pvieito/LoggerKit.git from cache (0.24s)
Fetching https://github.com/apple/swift-argument-parser from cache
Fetching https://github.com/onevcat/Rainbow from cache
Fetched https://github.com/apple/swift-argument-parser from cache (0.23s)
Fetched https://github.com/onevcat/Rainbow from cache (0.24s)
Computing version for https://github.com/onevcat/Rainbow
Computed https://github.com/onevcat/Rainbow at 3.1.5 (0.47s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 0.0.4 (0.47s)
Creating working copy for https://github.com/onevcat/Rainbow
Working copy of https://github.com/onevcat/Rainbow resolved at 3.1.5
Creating working copy for https://github.com/pvieito/PythonKit.git
Working copy of https://github.com/pvieito/PythonKit.git resolved at master (671302a)
Creating working copy for https://github.com/pvieito/LoggerKit.git
Working copy of https://github.com/pvieito/LoggerKit.git resolved at master (84d742e)
warning: /Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/repositories/swift-argument-parser-54a11a8d is not valid git repository for 'https://github.com/apple/swift-argument-parser', will fetch again.
Fetching https://github.com/apple/swift-argument-parser from cache
Fetched https://github.com/apple/swift-argument-parser from cache (0.01s)
warning: /Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/.build/repositories/swift-argument-parser-54a11a8d is not valid git repository for 'https://github.com/apple/swift-argument-parser', will fetch again.
Fetching https://github.com/apple/swift-argument-parser from cache
Fetched https://github.com/apple/swift-argument-parser from cache (0.01s)
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 0.0.4
warning: failed to retrieve search paths with pkg-config; maybe pkg-config is not installed
warning: you may be able to install gsl using your system-packager:
    brew install gsl
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version--423B1241ED78D482.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[2/7] Emitting module Statistics
<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "shim.h"
        ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/CGSL/shim.h:4:10: error: 'gsl/gsl_math.h' file not found
#include <gsl/gsl_math.h>
         ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Statistics/Statistics.swift:1:8: error: could not build Objective-C module 'CGSL'
import CGSL
       ^
[3/7] Compiling Statistics Statistics.swift
<module-includes>:1:9: note: in file included from <module-includes>:1:
#import "shim.h"
        ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/CGSL/shim.h:4:10: error: 'gsl/gsl_math.h' file not found
#include <gsl/gsl_math.h>
         ^
/Users/builder/builds/UKfvDsi8u/3/finestructure/swiftpackageindex-builder/spi-builder-workspace/Sources/Statistics/Statistics.swift:1:8: error: could not build Objective-C module 'CGSL'
import CGSL
       ^
error: fatalError
warning: failed to retrieve search paths with pkg-config; maybe pkg-config is not installed
warning: you may be able to install gsl using your system-packager:
    brew install gsl
BUILD FAILURE 5.10 macosSpm