Build Information
Successful build of FlatBuffers, reference v25.12.19 (7e1630), with Swift 6.3 for macOS (SPM) on 17 Apr 2026 20:58:12 UTC.
Swift 6 data race errors: 0
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64Build Log
========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/google/flatbuffers.git
Reference: v25.12.19
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/google/flatbuffers
* tag v25.12.19 -> FETCH_HEAD
HEAD is now at 7e16302 FlatBuffers Version 25.12.19 (#8871)
Cloned https://github.com/google/flatbuffers.git
Revision (git rev-parse @):
7e163021e59cca4f8e1e35a7c828b5c6b7915953
SUCCESS checkout https://github.com/google/flatbuffers.git at v25.12.19
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========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
"identity": ".resolve-product-dependencies",
"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",
"traits": [
"default"
],
"dependencies": [
{
"identity": "flatbuffers",
"name": "FlatBuffers",
"url": "https://github.com/google/flatbuffers.git",
"version": "unspecified",
"path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/flatbuffers",
"traits": [
"default"
],
"dependencies": [
]
}
]
}
Fetching https://github.com/google/flatbuffers.git
[1/98970] Fetching flatbuffers
Fetched https://github.com/google/flatbuffers.git from cache (4.26s)
Creating working copy for https://github.com/google/flatbuffers.git
Working copy of https://github.com/google/flatbuffers.git resolved at v25.12.19 (7e16302)
warning: '.resolve-product-dependencies': dependency 'flatbuffers' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform: macosSpm
Swift version: 6.3
Building package at path: $PWD
https://github.com/google/flatbuffers.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
[1/1] Compiling plugin GRPCSwiftPlugin
[2/2] Compiling plugin SwiftProtobufPlugin
Building for debugging...
[2/6] Write sources
[5/6] Write swift-version--6988338F2F200930.txt
[7/10] Compiling Common padding.swift
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[10/10] Compiling Common Int+extension.swift
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[12/49] Compiling FlatBuffers TableVerifier.swift
[13/49] Compiling FlatBuffers FlatbufferVector.swift
[14/49] Compiling FlatBuffers FlatbuffersVectorInitializable.swift
[15/49] Compiling FlatBuffers UnionFlatbufferVector.swift
[16/49] Compiling FlatBuffers Root.swift
[17/49] Compiling FlatBuffers String+extension.swift
[18/49] Compiling FlatBuffers ByteBuffer.swift
[19/49] Compiling FlatBuffers Constants.swift
[20/49] Compiling FlexBuffers Constants.swift
[21/49] Compiling FlatBuffers Enum.swift
[22/49] Compiling FlatBuffers FlatBufferBuilder.swift
[23/49] Compiling FlatBuffers FlatBufferObject.swift
[24/49] Compiling FlatBuffers FlatBuffersUtils.swift
[25/49] Compiling FlatBuffers FlatbuffersErrors.swift
[26/49] Compiling FlatBuffers Message.swift
[27/49] Compiling FlexBuffers Value.swift
[28/49] Emitting module FlexBuffers
[29/49] Compiling FlexBuffers FlexBuffersWriter.swift
[30/49] Compiling FlatBuffers Mutable.swift
[31/49] Compiling FlatBuffers VeriferOptions.swift
[32/49] Compiling FlexBuffers functions.swift
/Users/admin/builder/spi-builder-workspace/swift/Sources/FlexBuffers/Utils/functions.swift:106:41: warning: 'vectorString' is deprecated: use FBT_VECTOR or FBT_VECTOR_KEY instead. [#DeprecatedDeclaration]
104 | @inline(__always)
105 | func isTypedVectorType(type: FlexBufferType) -> Bool {
106 | return type >= .vectorInt && type <= .vectorString || type == .vectorBool
| `- warning: 'vectorString' is deprecated: use FBT_VECTOR or FBT_VECTOR_KEY instead. [#DeprecatedDeclaration]
107 | }
108 |
[#DeprecatedDeclaration]: <https://docs.swift.org/compiler/documentation/diagnostics/deprecated-declaration>
[36/50] Compiling FlatBuffers Verifier.swift
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[38/50] Compiling FlexBuffers _InternalByteBuffer.swift
[40/50] Compiling FlatBuffers Verifiable.swift
[47/50] Compiling FlatBuffers NativeObject.swift
[48/50] Compiling FlatBuffers Offset.swift
[49/50] Compiling FlatBuffers Struct.swift
[50/50] Compiling FlatBuffers Table.swift
Build complete! (20.11s)
Build complete.
{
"dependencies" : [
{
"identity" : "grpc-swift",
"requirement" : {
"range" : [
{
"lower_bound" : "1.4.1",
"upper_bound" : "2.0.0"
}
]
},
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}
},
{
"name" : "FlexBuffers",
"targets" : [
"FlexBuffers"
],
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}
}
],
"targets" : [
{
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"module_type" : "SwiftTarget",
"name" : "FlexbuffersTests",
"path" : "tests/swift/Tests/Flexbuffers",
"sources" : [
"FlexBuffersJSONTests.swift",
"FlexBuffersReaderTests.swift",
"FlexBuffersStringTests.swift",
"FlexBuffersWriterTests.swift",
"Mocks.swift"
],
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"FlexBuffers"
],
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},
{
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"product_memberships" : [
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"sources" : [
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"FlexBufferType.swift",
"Reader/FixedTypedVector.swift",
"Reader/FlexBufferVector.swift",
"Reader/Map.swift",
"Reader/Reference.swift",
"Reader/Sized.swift",
"Reader/TypedVector.swift",
"Reader/Vector.swift",
"Utils/BitWidth.swift",
"Utils/Constants.swift",
"Utils/Value.swift",
"Utils/functions.swift",
"Writer/FlexBuffersWriter.swift",
"_InternalByteBuffer.swift"
],
"target_dependencies" : [
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"type" : "library"
},
{
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"product_dependencies" : [
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"sources" : [
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"FlatBuffersNanInfTests.swift",
"FlatBuffersStructsTests.swift",
"FlatBuffersTests.swift",
"FlatBuffersUnionTests.swift",
"FlatBuffersVectorsTests.swift",
"FlatbuffersDoubleTests.swift",
"FlatbuffersMoreDefaults.swift",
"FlatbuffersVerifierTests.swift",
"MutatingBool_generated.swift",
"arrays_test_generated.swift",
"monster_test.grpc.swift",
"monster_test_generated.swift",
"more_defaults_generated.swift",
"nan_inf_test_generated.swift",
"optional_scalars_generated.swift",
"union_vector_generated.swift",
"vector_has_test_generated.swift"
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{
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"product_memberships" : [
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"FlatBufferObject.swift",
"FlatBuffersUtils.swift",
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"Message.swift",
"Mutable.swift",
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"Offset.swift",
"Root.swift",
"String+extension.swift",
"Struct.swift",
"Table.swift",
"TableVerifier.swift",
"Vectors/FlatbufferVector.swift",
"Vectors/FlatbuffersVectorInitializable.swift",
"Vectors/UnionFlatbufferVector.swift",
"VeriferOptions.swift",
"Verifiable.swift",
"Verifier.swift",
"_InternalByteBuffer.swift"
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{
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],
"sources" : [
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"padding.swift"
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"tools_version" : "5.10"
}
Done.