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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 SwiftXGBoost, reference 0.13.0 (569782), with Swift 6.1 for macOS (SPM) on 25 Apr 2025 18:34:14 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/kongzii/SwiftXGBoost.git
Reference: 0.13.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/kongzii/SwiftXGBoost
 * tag               0.13.0     -> FETCH_HEAD
HEAD is now at 5697823 Change default renderer to svg
Cloned https://github.com/kongzii/SwiftXGBoost.git
Revision (git rev-parse @):
569782385a8ae3f490108e73fd24db6f8972c4ed
SUCCESS checkout https://github.com/kongzii/SwiftXGBoost.git at 0.13.0
Fetching https://github.com/onevcat/Rainbow
Fetching https://github.com/kongzii/LoggerKit.git
Fetching https://github.com/kongzii/PythonKit
Fetching https://github.com/KarthikRIyer/swiftplot.git
Fetching https://github.com/apple/swift-log.git from cache
Fetching https://github.com/apple/swift-argument-parser from cache
[1/369] Fetching loggerkit
[46/7077] Fetching loggerkit, swiftplot
[505/8273] Fetching loggerkit, swiftplot, rainbow
[661/9140] Fetching loggerkit, swiftplot, rainbow, pythonkit
Fetched https://github.com/kongzii/LoggerKit.git from cache (1.51s)
Fetched https://github.com/KarthikRIyer/swiftplot.git from cache (1.51s)
Fetched https://github.com/kongzii/PythonKit from cache (1.51s)
Fetched https://github.com/onevcat/Rainbow from cache (1.52s)
Fetched https://github.com/apple/swift-log.git from cache (1.52s)
Computing version for https://github.com/apple/swift-log.git
Fetched https://github.com/apple/swift-argument-parser from cache (1.52s)
Computed https://github.com/apple/swift-log.git at 1.2.0 (2.12s)
Computing version for https://github.com/KarthikRIyer/swiftplot.git
Computed https://github.com/KarthikRIyer/swiftplot.git at 2.0.0 (0.58s)
Computing version for https://github.com/kongzii/PythonKit
Computed https://github.com/kongzii/PythonKit at 0.0.1 (0.61s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 0.0.6 (0.57s)
Computing version for https://github.com/kongzii/LoggerKit.git
Computed https://github.com/kongzii/LoggerKit.git at 0.0.0 (0.58s)
Computing version for https://github.com/onevcat/Rainbow
Computed https://github.com/onevcat/Rainbow at 3.1.5 (0.65s)
Creating working copy for https://github.com/KarthikRIyer/swiftplot.git
Working copy of https://github.com/KarthikRIyer/swiftplot.git resolved at 2.0.0
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 0.0.6
Creating working copy for https://github.com/kongzii/LoggerKit.git
Working copy of https://github.com/kongzii/LoggerKit.git resolved at 0.0.0
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/kongzii/PythonKit
Working copy of https://github.com/kongzii/PythonKit resolved at 0.0.1
Creating working copy for https://github.com/apple/swift-log.git
Working copy of https://github.com/apple/swift-log.git resolved at 1.2.0
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
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  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "swiftxgboost",
      "name": "SwiftXGBoost",
      "url": "https://github.com/kongzii/SwiftXGBoost.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/SwiftXGBoost",
      "dependencies": [
        {
          "identity": "pythonkit",
          "name": "PythonKit",
          "url": "https://github.com/kongzii/PythonKit",
          "version": "0.0.1",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/PythonKit",
          "dependencies": [
            {
              "identity": "loggerkit",
              "name": "LoggerKit",
              "url": "https://github.com/kongzii/LoggerKit.git",
              "version": "0.0.0",
              "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/LoggerKit",
              "dependencies": [
                {
                  "identity": "rainbow",
                  "name": "Rainbow",
                  "url": "https://github.com/onevcat/Rainbow",
                  "version": "3.2.0",
                  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Rainbow",
                  "dependencies": [
                  ]
                }
              ]
            },
            {
              "identity": "swift-argument-parser",
              "name": "swift-argument-parser",
              "url": "https://github.com/apple/swift-argument-parser",
              "version": "0.0.6",
              "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-argument-parser",
              "dependencies": [
              ]
            }
          ]
        },
        {
          "identity": "swiftplot",
          "name": "SwiftPlot",
          "url": "https://github.com/KarthikRIyer/swiftplot.git",
          "version": "2.0.0",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swiftplot",
          "dependencies": [
          ]
        },
        {
          "identity": "swift-log",
          "name": "swift-log",
          "url": "https://github.com/apple/swift-log.git",
          "version": "1.6.3",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/swift-log",
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/kongzii/SwiftXGBoost.git
[1/2962] Fetching swiftxgboost
Fetched https://github.com/kongzii/SwiftXGBoost.git from cache (1.13s)
Fetching https://github.com/apple/swift-log.git from cache
Fetching https://github.com/kongzii/PythonKit from cache
Fetching https://github.com/KarthikRIyer/swiftplot.git from cache
Fetched https://github.com/kongzii/PythonKit from cache (0.46s)
Fetched https://github.com/KarthikRIyer/swiftplot.git from cache (0.49s)
Fetched https://github.com/apple/swift-log.git from cache (0.49s)
Computing version for https://github.com/KarthikRIyer/swiftplot.git
Computed https://github.com/KarthikRIyer/swiftplot.git at 2.0.0 (0.55s)
Computing version for https://github.com/kongzii/PythonKit
Computed https://github.com/kongzii/PythonKit at 0.0.1 (0.03s)
Fetching https://github.com/apple/swift-argument-parser from cache
Fetching https://github.com/kongzii/LoggerKit.git from cache
Fetched https://github.com/kongzii/LoggerKit.git from cache (0.56s)
Fetched https://github.com/apple/swift-argument-parser from cache (0.56s)
Computing version for https://github.com/kongzii/LoggerKit.git
Computed https://github.com/kongzii/LoggerKit.git at 0.0.0 (0.62s)
Fetching https://github.com/onevcat/Rainbow from cache
Fetched https://github.com/onevcat/Rainbow from cache (0.45s)
Computing version for https://github.com/apple/swift-argument-parser
Computed https://github.com/apple/swift-argument-parser at 0.0.6 (0.50s)
Computing version for https://github.com/onevcat/Rainbow
Computed https://github.com/onevcat/Rainbow at 3.2.0 (0.03s)
Computing version for https://github.com/apple/swift-log.git
Computed https://github.com/apple/swift-log.git at 1.6.3 (0.51s)
Creating working copy for https://github.com/kongzii/PythonKit
Working copy of https://github.com/kongzii/PythonKit resolved at 0.0.1
Creating working copy for https://github.com/apple/swift-argument-parser
Working copy of https://github.com/apple/swift-argument-parser resolved at 0.0.6
Creating working copy for https://github.com/kongzii/SwiftXGBoost.git
Working copy of https://github.com/kongzii/SwiftXGBoost.git resolved at 0.13.0 (5697823)
Creating working copy for https://github.com/kongzii/LoggerKit.git
Working copy of https://github.com/kongzii/LoggerKit.git resolved at 0.0.0
Creating working copy for https://github.com/onevcat/Rainbow
Working copy of https://github.com/onevcat/Rainbow resolved at 3.2.0
Creating working copy for https://github.com/apple/swift-log.git
Working copy of https://github.com/apple/swift-log.git resolved at 1.6.3
Creating working copy for https://github.com/KarthikRIyer/swiftplot.git
Working copy of https://github.com/KarthikRIyer/swiftplot.git resolved at 2.0.0
warning: '.resolve-product-dependencies': dependency 'swiftxgboost' is not used by any target
Found 3 product dependencies
  - PythonKit
  - SwiftPlot
  - swift-log
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.1
Building package at path:  $PWD
https://github.com/kongzii/SwiftXGBoost.git
https://github.com/kongzii/SwiftXGBoost.git
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          "0.0.1"
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/kongzii/PythonKit"
    },
    {
      "identity" : "swiftplot",
      "requirement" : {
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            "upper_bound" : "3.0.0"
          }
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      },
      "type" : "sourceControl",
      "url" : "https://github.com/KarthikRIyer/swiftplot.git"
    },
    {
      "identity" : "swift-log",
      "requirement" : {
        "range" : [
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            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/apple/swift-log.git"
    }
  ],
  "manifest_display_name" : "SwiftXGBoost",
  "name" : "SwiftXGBoost",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "10.13"
    }
  ],
  "products" : [
    {
      "name" : "XGBoost",
      "targets" : [
        "XGBoost"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "CXGBoost",
      "targets" : [
        "CXGBoost"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    },
    {
      "name" : "PredictLeafIndices",
      "targets" : [
        "PredictLeafIndices"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "PredictFirstNTree",
      "targets" : [
        "PredictFirstNTree"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "GeneralizedLinearModel",
      "targets" : [
        "GeneralizedLinearModel"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "ExternalMemory",
      "targets" : [
        "ExternalMemory"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "EvalsResult",
      "targets" : [
        "EvalsResult"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "CustomObjective",
      "targets" : [
        "CustomObjective"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "CrossValidation",
      "targets" : [
        "CrossValidation"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "BoostFromPrediction",
      "targets" : [
        "BoostFromPrediction"
      ],
      "type" : {
        "executable" : null
      }
    },
    {
      "name" : "AftSurvival",
      "targets" : [
        "AftSurvival"
      ],
      "type" : {
        "executable" : null
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "XGBoostTests",
      "module_type" : "SwiftTarget",
      "name" : "XGBoostTests",
      "path" : "Tests/XGBoostTests",
      "product_dependencies" : [
        "PythonKit"
      ],
      "sources" : [
        "ArrayTests.swift",
        "BoosterTests.swift",
        "CrossValidationTests.swift",
        "DMatrixTests.swift",
        "ExampleTests.swift",
        "PlotTests.swift",
        "TensorFlowTests.swift",
        "TrainTests.swift",
        "Utilities.swift",
        "XCTestManifests.swift",
        "XGBoostDocsTests.swift"
      ],
      "target_dependencies" : [
        "XGBoost"
      ],
      "type" : "test"
    },
    {
      "c99name" : "XGBoost",
      "module_type" : "SwiftTarget",
      "name" : "XGBoost",
      "path" : "Sources/XGBoost",
      "product_dependencies" : [
        "Logging",
        "PythonKit",
        "SwiftPlot",
        "SVGRenderer"
      ],
      "product_memberships" : [
        "XGBoost",
        "PredictLeafIndices",
        "PredictFirstNTree",
        "GeneralizedLinearModel",
        "ExternalMemory",
        "EvalsResult",
        "CustomObjective",
        "CrossValidation",
        "BoostFromPrediction",
        "AftSurvival"
      ],
      "sources" : [
        "Array.swift",
        "Booster.swift",
        "CrossValidation.swift",
        "DMatrix.swift",
        "Dictionary.swift",
        "Enums.swift",
        "Feature.swift",
        "Logging.swift",
        "Parameter.swift",
        "Plot.swift",
        "Python.swift",
        "Safe.swift",
        "String.swift",
        "TensorFlow.swift",
        "Train.swift"
      ],
      "target_dependencies" : [
        "CXGBoost"
      ],
      "type" : "library"
    },
    {
      "c99name" : "PredictLeafIndices",
      "module_type" : "SwiftTarget",
      "name" : "PredictLeafIndices",
      "path" : "Examples/PredictLeafIndices",
      "product_dependencies" : [
        "PythonKit"
      ],
      "product_memberships" : [
        "PredictLeafIndices"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "XGBoost"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "PredictFirstNTree",
      "module_type" : "SwiftTarget",
      "name" : "PredictFirstNTree",
      "path" : "Examples/PredictFirstNTree",
      "product_dependencies" : [
        "PythonKit"
      ],
      "product_memberships" : [
        "PredictFirstNTree"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "XGBoost"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "GeneralizedLinearModel",
      "module_type" : "SwiftTarget",
      "name" : "GeneralizedLinearModel",
      "path" : "Examples/GeneralizedLinearModel",
      "product_dependencies" : [
        "PythonKit"
      ],
      "product_memberships" : [
        "GeneralizedLinearModel"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "XGBoost"
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      "type" : "executable"
    },
    {
      "c99name" : "ExternalMemory",
      "module_type" : "SwiftTarget",
      "name" : "ExternalMemory",
      "path" : "Examples/ExternalMemory",
      "product_dependencies" : [
        "PythonKit"
      ],
      "product_memberships" : [
        "ExternalMemory"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "XGBoost"
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      "type" : "executable"
    },
    {
      "c99name" : "EvalsResult",
      "module_type" : "SwiftTarget",
      "name" : "EvalsResult",
      "path" : "Examples/EvalsResult",
      "product_dependencies" : [
        "PythonKit"
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      "product_memberships" : [
        "EvalsResult"
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      "sources" : [
        "main.swift"
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      "target_dependencies" : [
        "XGBoost"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "CustomObjective",
      "module_type" : "SwiftTarget",
      "name" : "CustomObjective",
      "path" : "Examples/CustomObjective",
      "product_dependencies" : [
        "PythonKit"
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      "product_memberships" : [
        "CustomObjective"
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      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "XGBoost"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "CrossValidation",
      "module_type" : "SwiftTarget",
      "name" : "CrossValidation",
      "path" : "Examples/CrossValidation",
      "product_dependencies" : [
        "PythonKit"
      ],
      "product_memberships" : [
        "CrossValidation"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "XGBoost"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "CXGBoost",
      "module_type" : "SystemLibraryTarget",
      "name" : "CXGBoost",
      "path" : "Sources/CXGBoost",
      "product_memberships" : [
        "XGBoost",
        "CXGBoost",
        "PredictLeafIndices",
        "PredictFirstNTree",
        "GeneralizedLinearModel",
        "ExternalMemory",
        "EvalsResult",
        "CustomObjective",
        "CrossValidation",
        "BoostFromPrediction",
        "AftSurvival"
      ],
      "sources" : [
      ],
      "type" : "system-target"
    },
    {
      "c99name" : "BoostFromPrediction",
      "module_type" : "SwiftTarget",
      "name" : "BoostFromPrediction",
      "path" : "Examples/BoostFromPrediction",
      "product_dependencies" : [
        "PythonKit"
      ],
      "product_memberships" : [
        "BoostFromPrediction"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "XGBoost"
      ],
      "type" : "executable"
    },
    {
      "c99name" : "AftSurvival",
      "module_type" : "SwiftTarget",
      "name" : "AftSurvival",
      "path" : "Examples/AftSurvival",
      "product_dependencies" : [
        "PythonKit"
      ],
      "product_memberships" : [
        "AftSurvival"
      ],
      "sources" : [
        "main.swift"
      ],
      "target_dependencies" : [
        "XGBoost"
      ],
      "type" : "executable"
    }
  ],
  "tools_version" : "5.1"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/51] Write PredictLeafIndices-entitlement.plist
[1/51] Write sources
[3/51] Write PredictFirstNTree-entitlement.plist
[8/51] Write sources
[12/51] Write GeneralizedLinearModel-entitlement.plist
[12/51] Write sources
[12/51] Write ExternalMemory-entitlement.plist
[12/51] Write EvalsResult-entitlement.plist
[16/51] Write sources
[16/51] Write CustomObjective-entitlement.plist
[19/51] Write sources
[19/51] Write BoostFromPrediction-entitlement.plist
[21/51] Write AftSurvival-entitlement.plist
[21/51] Write CrossValidation-entitlement.plist
[23/51] Write swift-version-2F0A5646E1D333AE.txt
[25/91] Compiling Logging LogHandler.swift
[26/91] Compiling Logging Locks.swift
[27/91] Compiling Logging Logging.swift
[28/91] Emitting module Logging
error: emit-module command failed with exit code 1 (use -v to see invocation)
[29/91] Compiling PythonKit PythonLibrary+Symbols.swift
[30/91] Compiling PythonKit NumpyConversion.swift
[31/91] Compiling PythonKit PythonLibrary.swift
[32/91] Emitting module PythonKit
/Users/admin/builder/spi-builder-workspace/.build/checkouts/PythonKit/PythonKit/Python.swift:40:17: error: type referenced from a stored property in a '@frozen' struct must be '@usableFromInline' or public
  26 | /// Typealias used when passing or returning a `PyObject` pointer with
  27 | /// implied ownership.
  28 | typealias OwnedPyObjectPointer = PyObjectPointer
     |           `- note: type declared here
  29 |
  30 | /// A primitive reference to a Python C API `PyObject`.
     :
  38 | @usableFromInline @_fixed_layout
  39 | final class PyReference {
  40 |     private var pointer: OwnedPyObjectPointer
     |                 `- error: type referenced from a stored property in a '@frozen' struct must be '@usableFromInline' or public
  41 |
  42 |     // This `PyReference`, once deleted, will make no delta change to the
[33/91] Compiling PythonKit Python.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/PythonKit/PythonKit/Python.swift:40:17: error: type referenced from a stored property in a '@frozen' struct must be '@usableFromInline' or public
  26 | /// Typealias used when passing or returning a `PyObject` pointer with
  27 | /// implied ownership.
  28 | typealias OwnedPyObjectPointer = PyObjectPointer
     |           `- note: type declared here
  29 |
  30 | /// A primitive reference to a Python C API `PyObject`.
     :
  38 | @usableFromInline @_fixed_layout
  39 | final class PyReference {
  40 |     private var pointer: OwnedPyObjectPointer
     |                 `- error: type referenced from a stored property in a '@frozen' struct must be '@usableFromInline' or public
  41 |
  42 |     // This `PyReference`, once deleted, will make no delta change to the
warning: failed to retrieve search paths with pkg-config; maybe pkg-config is not installed
warning: you may be able to install xgboost using your system-packager:
    brew install xgboost
warning: you may be able to install freetype2 using your system-packager:
    brew install freetype2
warning: you may be able to install xgboost using your system-packager:
    brew install xgboost
warning: you may be able to install freetype2 using your system-packager:
    brew install freetype2
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.3.0.app xcrun swift build --arch arm64
[0/1] Planning build
Building for debugging...
[0/28] Write swift-version-2F0A5646E1D333AE.txt
[2/68] Compiling PythonKit PythonLibrary.swift
[3/68] Compiling PythonKit PythonLibrary+Symbols.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/68] Compiling PythonKit NumpyConversion.swift
[5/68] Emitting module PythonKit
/Users/admin/builder/spi-builder-workspace/.build/checkouts/PythonKit/PythonKit/Python.swift:40:17: error: type referenced from a stored property in a '@frozen' struct must be '@usableFromInline' or public
  26 | /// Typealias used when passing or returning a `PyObject` pointer with
  27 | /// implied ownership.
  28 | typealias OwnedPyObjectPointer = PyObjectPointer
     |           `- note: type declared here
  29 |
  30 | /// A primitive reference to a Python C API `PyObject`.
     :
  38 | @usableFromInline @_fixed_layout
  39 | final class PyReference {
  40 |     private var pointer: OwnedPyObjectPointer
     |                 `- error: type referenced from a stored property in a '@frozen' struct must be '@usableFromInline' or public
  41 |
  42 |     // This `PyReference`, once deleted, will make no delta change to the
[6/68] Compiling PythonKit Python.swift
/Users/admin/builder/spi-builder-workspace/.build/checkouts/PythonKit/PythonKit/Python.swift:40:17: error: type referenced from a stored property in a '@frozen' struct must be '@usableFromInline' or public
  26 | /// Typealias used when passing or returning a `PyObject` pointer with
  27 | /// implied ownership.
  28 | typealias OwnedPyObjectPointer = PyObjectPointer
     |           `- note: type declared here
  29 |
  30 | /// A primitive reference to a Python C API `PyObject`.
     :
  38 | @usableFromInline @_fixed_layout
  39 | final class PyReference {
  40 |     private var pointer: OwnedPyObjectPointer
     |                 `- error: type referenced from a stored property in a '@frozen' struct must be '@usableFromInline' or public
  41 |
  42 |     // This `PyReference`, once deleted, will make no delta change to the
[7/68] Compiling Logging LogHandler.swift
[8/68] Compiling Logging Locks.swift
[9/68] Emitting module Logging
warning: failed to retrieve search paths with pkg-config; maybe pkg-config is not installed
warning: you may be able to install xgboost using your system-packager:
    brew install xgboost
warning: you may be able to install freetype2 using your system-packager:
    brew install freetype2
warning: you may be able to install xgboost using your system-packager:
    brew install xgboost
warning: you may be able to install freetype2 using your system-packager:
    brew install freetype2
BUILD FAILURE 6.1 macosSpm