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Build Information

Successful build of mlx-libraries, reference main (fc3afc), with Swift 6.0 for macOS (SPM) on 12 Dec 2025 02:00:54 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
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Builder version: 4.68.0
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/ml-explore/mlx-swift-examples.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/ml-explore/mlx-swift-examples
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at fc3afc7 Update LLMEval example (#452)
Cloned https://github.com/ml-explore/mlx-swift-examples.git
Revision (git rev-parse @):
fc3afc7cdbc4b6120d210c4c58c6b132ce346775
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/ml-explore/mlx-swift-examples.git at main
========================================
Build
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Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/ml-explore/mlx-swift-examples.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64
Building for debugging...
[0/188] Write sources
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[21/188] Write swift-version-5BDAB9E9C0126B9D.txt
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[133/296] Compiling OrderedCollections _UnsafeBitset.swift
[133/296] Compiling no_gguf.cpp
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[135/296] Compiling load.cpp
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[154/310] Emitting module Gzip
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[157/310] Compiling Jinja Utilities.swift
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[192/319] Compiling jit_kernels.cpp
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[218/332] Compiling Tokenizers UnigramTokenizer.swift
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[231/333] Compiling Tokenizers Tokenizer.swift
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[249/343] Emitting module Generation
[249/343] Compiling matmul.cpp
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[251/347] Compiling primitives.cpp
[253/347] Compiling Models LanguageModelTypes.swift
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[254/347] Compiling logsumexp.cpp
[256/347] Emitting module Models
[257/347] Compiling Models LanguageModel.swift
[257/347] Compiling masked_mm.cpp
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[276/347] Compiling load.cpp
[277/347] Compiling utils.cpp
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[281/347] Compiling unary.cpp
[282/347] Compiling ternary_ops.cpp
[283/347] Compiling ternary.cpp
[284/347] Compiling steel_gemm_splitk.cpp
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[286/347] Compiling steel_gemm_masked.cpp
[287/347] Compiling steel_gemm_gather.cpp
[288/347] Compiling steel_gemm_fused.cpp
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[290/347] Compiling steel_conv.cpp
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[292/347] Compiling softmax.cpp
[293/347] Compiling scatter_axis.cpp
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[299/347] Compiling quantized_utils.cpp
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[302/347] Compiling hadamard.cpp
[302/347] Compiling logsumexp.cpp
[304/347] Compiling gemv_masked.cpp
[305/347] Compiling gemm.cpp
[306/347] Compiling gather_front.cpp
[307/347] Compiling gather_axis.cpp
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[309/347] Compiling fp4_quantized.cpp
[310/347] Compiling fft.cpp
[311/347] Compiling copy.cpp
[312/347] Compiling conv.cpp
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[317/347] Compiling arange.cpp
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[330/347] Compiling metal.cpp
[331/347] Compiling linalg.cpp
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[348/378] Emitting module MLX
[349/381] Compiling MLX ArrayAt.swift
[350/381] Compiling MLX Cmlx+Util.swift
[351/381] Compiling MLX DType.swift
[352/381] Compiling MLX Device.swift
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[366/381] Compiling MLX GPU.swift
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[368/381] Compiling MLX Linalg.swift
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[383/386] Emitting module MLXFast
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[385/386] Emitting module MLXRandom
[386/386] Compiling MLXRandom Random.swift
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[412/421] Compiling StableDiffusion Tokenizer.swift
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[414/421] Compiling StableDiffusion StableDiffusion.swift
[415/421] Emitting module StableDiffusion
[416/421] Compiling StableDiffusion Configuration.swift
[417/421] Compiling StableDiffusion UNet.swift
/Users/admin/builder/spi-builder-workspace/Libraries/StableDiffusion/UNet.swift:134:13: warning: initialization of immutable value 'dtype' was never used; consider replacing with assignment to '_' or removing it
132 |     ) -> MLXArray {
133 |         let inputX = x
134 |         let dtype = x.dtype
    |             `- warning: initialization of immutable value 'dtype' was never used; consider replacing with assignment to '_' or removing it
135 |         var x = x
136 |
/Users/admin/builder/spi-builder-workspace/Libraries/StableDiffusion/UNet.swift:196:13: warning: initialization of immutable value 'dtype' was never used; consider replacing with assignment to '_' or removing it
194 |
195 |     func callAsFunction(_ x: MLXArray, timeEmbedding: MLXArray? = nil) -> MLXArray {
196 |         let dtype = x.dtype
    |             `- warning: initialization of immutable value 'dtype' was never used; consider replacing with assignment to '_' or removing it
197 |
198 |         var y = norm1(x)
/Users/admin/builder/spi-builder-workspace/Libraries/StableDiffusion/UNet.swift:503:13: warning: initialization of immutable value 'dtype' was never used; consider replacing with assignment to '_' or removing it
501 |
502 |         // postprocess the output
503 |         let dtype = x.dtype
    |             `- warning: initialization of immutable value 'dtype' was never used; consider replacing with assignment to '_' or removing it
504 |         x = convNormOut(x)
505 |         x = silu(x)
[418/421] Compiling StableDiffusion VAE.swift
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[420/421] Compiling StableDiffusion Image.swift
/Users/admin/builder/spi-builder-workspace/Libraries/StableDiffusion/Image.swift:135:20: warning: immutable value 'C' was never used; consider replacing with '_' or removing it
133 |
134 |         let arrayData = raster.asData()
135 |         let (H, W, C) = raster.shape3
    |                    `- warning: immutable value 'C' was never used; consider replacing with '_' or removing it
136 |         let cs = CGColorSpace(name: CGColorSpace.sRGB)!
137 |
[421/421] Compiling StableDiffusion Load.swift
Build complete! (57.85s)
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Creating working copy for https://github.com/huggingface/swift-transformers
Working copy of https://github.com/huggingface/swift-transformers resolved at 1.1.5
Creating working copy for https://github.com/huggingface/swift-jinja.git
Working copy of https://github.com/huggingface/swift-jinja.git resolved at 2.2.0
Creating working copy for https://github.com/ml-explore/mlx-swift
Working copy of https://github.com/ml-explore/mlx-swift resolved at 0.29.1
Creating working copy for https://github.com/apple/swift-numerics
Working copy of https://github.com/apple/swift-numerics resolved at 1.1.1
Creating working copy for https://github.com/1024jp/GzipSwift
Working copy of https://github.com/1024jp/GzipSwift resolved at 6.0.1
Build complete.
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      "identity" : "mlx-swift",
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  ],
  "manifest_display_name" : "mlx-libraries",
  "name" : "mlx-libraries",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
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    },
    {
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    }
  ],
  "products" : [
    {
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      "targets" : [
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      ],
      "type" : {
        "library" : [
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      }
    },
    {
      "name" : "StableDiffusion",
      "targets" : [
        "StableDiffusion"
      ],
      "type" : {
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    }
  ],
  "targets" : [
    {
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      "module_type" : "SwiftTarget",
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      "path" : "Libraries/StableDiffusion",
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        "MLXNN",
        "MLXRandom",
        "Transformers"
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      "product_memberships" : [
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      "sources" : [
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        "Configuration.swift",
        "Image.swift",
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        "Tokenizer.swift",
        "UNet.swift",
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  ],
  "tools_version" : "5.9"
}
Done.